Magnetic order and dynamics of the charge-ordered antiferromagnet La1.5Sr0.5CoO4 (2009)
Helme, L. M., Boothroyd, A. T., Coldea, R., Prabhakaran, D., Frost, C. D., Keen, D. A., ...
We describe neutron scattering experiments performed to investigate the magnetic order and dynamics of half-doped La1.5Sr0.5CoO4. This layered perovskite exhibits a near-ideal checkerboard pattern of...
Control of chiral magnetism in multiferroic MnWO4 through an electric field (2009)
Finger, T., Senff, D., Schmalzl, K., Schmidt, W., Regnault, L. P., Becker, P., ...
The chiral components in the magnetic order in multiferroic MnWO4 have been studied by neutron diffraction using spherical polarization analysis as a function of temperature and of external electric...
Evidence for local-moment antiferromagnetism in the optimally-doped superconductor Bi2212 (2009)
Xu, Guangyong, Gu, G. D., Hucker, M., Fauque, B., Perring, T. G., Regnault, L. P., ...
While antiferromagnetism is commonly believed to be important to the mechanism of high-temperature superconductivity in the cuprates, the nature of the magnetism remains controversial. Does it derive...
Hybrid Goldstone modes in multiferroics (2008)
Pailhes, S., Fabreges, X., Regnault, L. P., Pinsard-Godart, L., Mirebeau, I., Moussa, F., ...
By using polarized inelastic neutron scattering measurements, we show that the spin-lattice quantum entanglement in mutliferroics results in hybrid elementary excitations, involving spin and lattice...
Quantum dynamics and entanglement of spins on a square lattice (2007)
Christensen, N. B., Ronnow, H. M., McMorrow, D. F., Harrison, A., Perring, T. G., Enderle, M., ...
Bulk magnetism in solids is fundamentally quantum mechanical in nature. Yet in many situations, including our everyday encounters with magnetic materials, quantum effects are masked, and it often...
Resonant magnetic excitations at high energy in superconducting $\bf YBa_2Cu_3O_{6.85}$ (2007)
Pailhes, S., Sidis, Y., Bourges, P., Hinkov, V., Ivanov, A., Ulrich, C., ...
A detailed inelastic neutron scattering study of the high temperature superconductor $\rm YBa_2Cu_3O_{6.85}$ provides evidence of new resonant magnetic features, in addition to the well known...
Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor (2007)
Pailhes, S., Sidis, Y., Bourges, P., Ulrich, C., Hinkov, V., Regnault, L. P., ...
A detailed inelastic neutron scattering study of the overdoped high temperature copper oxide superconductor ${Y_{0.9}Ca_{0.1}Ba_{2}Cu_3O_{7}}$ reveals two distinct magnetic resonant modes in the...
Quantum dynamics and entanglement of spins on a square lattice (2007)
Christensen, N. B., Ronnow, H. M., McMorrow, D. F., Harrison, A., Perring, T. G., Enderle, M., ...
Bulk magnetism in solids is fundamentally quantum mechanical in nature. Yet in many situations, including our everyday encounters with magnetic materials, quantum effects are masked, and it often...
Raymond, S., Regnault, L. P., Flouquet, J., Wildes, A., Lejay, P.
Inelastic neutron scattering experiments performed on a single crystal of the antiferromagnetic compound Ce$_{0.87}$La$_{0.13}$Ru$_{2}$Si$_{2}$ under applied pressures of up to 5 kbar are reported. A...
Magnetic Resonant excitations in High-{$\rm T_c$} superconductors (2006)
Sidis, Y., Pailhès, S., Keimer, B., Bourges, P., Ulrich, C., Regnault, L. P.
The observation of an unusual spin resonant excitation in the superconducting state of various High-Tc ~copper oxides by inelastic neutron scattering measurements is reviewed. This magnetic mode %...
Antiferromagnetic ordering in superconducting ${\bf YBa_2Cu_3O_{6.5}}$ (2006)
Sidis, Y., Ulrich, C., Bourges, P., Bernhard, C., Niedermayer, C., Regnault, L. P., ...
Commensurate antiferromagnetic ordering has been observed in the superconducting high-$Tc$ cuprate ${\rm YBa_{2}Cu_{3}O_{6.5}}$ (${\rm T_{c}}$=55 K) by polarized and unpolarized elastic neutron...
Magnetic resonance peak and nonmagnetic impurities (2006)
Sidis, Y., Bourges, P., Keimer, B., Regnault, L. P., Bossy, J., Ivanov, A., ...
Nonmagnetic Zn impurities are known to strongly suppress superconductivity. We review their effects on the spin excitation spectrum in $\rm YBa_2Cu_3O_{7}$, as investigated by inelastic neutron...
Magnetic excitations in multiferroic TbMnO3 (2006)
Senff, D., Link, P., Hradil, K., Hiess, A., Regnault, L. P., Sidis, Y., ...
The magnetic excitations in multiferroic TbMnO3 have been studied by inelastic neutron scattering in the spiral and sinusoidally ordered phases. At the incommensurate magnetic zone center of the...
Dynamical spin chirality and spin anisotropy in gapped S=1/2 quantum systems (2006)
Lorenzo, J. E., Boullier, C., Regnault, L. P., Ammerahl, U., Revcolevschi, A.
We have studied the spin anisotropy in spin-singlet ground state compounds and the magnetic chirality, as measured by inelastic polarized neutron scattering techniques, in the chain-sublattice of...
Neutron diffraction study of YVO3, NdVO3, and TbVO3 (2006)
Reehuis, M., Ulrich, C., Pattison, P., Ouladdiaf, B., Rheinstadter, M. C., Ohl, M., ...
The structural and magnetic properties of YVO3, NdVO3 and TbVO3 were investigated by single-crystal and powder neutron diffraction. YVO3 shows a structural phase transition at 200 K from an...
Neutron diffraction study of YVO3, NdVO3, and TbVO3 (2006)
Reehuis, M., Ulrich, C., Pattison, P., Ouladdiaf, B., Rheinstädter, M. C., Ohl, M., ...
The structural and magnetic properties of YVO3, NdVO3 and TbVO3 were investigated by single-crystal and powder neutron diffraction. YVO3 shows a structural phase transition at 200 K from an...
Elementary Excitations in Quantum Antiferromagnetic Chains: Dyons, Spinons and Breathers (2005)
Asano, T., Nojiri, H., Inagaki, Y., Ajiro, Y., Regnault, L. P., Boucher, J. P.
Considering experimental results obtained on three prototype compounds, TMMC, CsCoCl3 (or CsCoBr3) and Cu Benzoate, we discuss the importance of non-linear excitations in the physics of quantum (and...
Hagiwara, M., Regnault, L. P., Zheludev, A., Stunault, A., Metoki, N., Suzuki, T., ...
Inelastic neutron scattering experiments on the S=1 quasi-one-dimensional bond-alternating antiferromagnet Ni(C9D24N4)(NO2)ClO4 have been performed under magnetic fields below and above a critical...
The resonant magnetic mode: A common feature of high-Tc superconductors (2005)
Bourges, P., Keimer, B., Pailhès, S., Regnault, L. P., Sidis, Y., Ulrich, C.
Itinerant magnetism in Kondo crystal CeB6 as indicated by polarized neutron scattering (2004)
Plakhty, V. P., Regnault, L. P., Goltsev, A. V., Gavrilov, S. V., Yakhou, F., Flouquet, J., ...
A magnetic Bragg reflection corresponding to the wave vector k13 = (2pi/a)[1/2,1/2,1/2] of the antiferro-quadrupolar ordering is found in CeB6 in zero magnetic field below the Neel temperature TN....
Resonant magnetic excitations at high energy in superconducting $\bf YBa_2Cu_3O_{6.85}$ (2004)
Pailhes, S., Sidis, Y., Bourges, P., Hinkov, V., Ivanov, A., Ulrich, C., ...
A detailed inelastic neutron scattering study of the high temperature superconductor $\rm YBa_2Cu_3O_{6.85}$ provides evidence of new resonant magnetic features, in addition to the well known...
Fujita, M., Goka, H., Yamada, K., Tranquada, J. M., Regnault, L. P.
We present a neutron scattering study of stripe correlations measured on a single crystal of La$_{1.875}$Ba$_{0.125}$CuO$_{4}$. Within the low-temperature-tetragonal (LTT) phase, superlattice peaks...
Ordering and Excitations in the Field-Induced Magnetic Phase of Cs_3Cr_2Br_9 (2004)
Grenier, B., Inagaki, Y., Regnault, L. P., Wildes, A., Asano, T., Ajiro, Y., ...
Field-induced magnetic order has been investigated in detail in the interacting spin 3/2 dimer system Cs_3Cr_2Br_9. Elastic and inelastic neutron scattering measurements were performed up to H = 6 T,...
Magnetic Resonant excitations in High-{$\rm T_c$} superconductors (2004)
Sidis, Y., Pailhès, S., Keimer, B., Bourges, P., Ulrich, C., Regnault, L. P.
The observation of an unusual spin resonant excitation in the superconducting state of various High-Tc ~copper oxides by inelastic neutron scattering measurements is reviewed. This magnetic mode %...
Magnetic resonant excitations in High-Tc superconductors (2004)
Sidis, Y., Pailhès, S., Keimer, B., Bourges, P., Ulrich, C., Regnault, L. P.
Resonant Magnetic Excitations at High Energy in Superconducting YBa2Cu3O6.85 (2004)
Pailhès, S., Sidis, Y., Bourges, P., Hinkov, V., Ivanov, A., Ulrich, C., ...
Evidence for an incommensurate magnetic resonance in La2-xSrxCuO4 (2004)
Tranquada, J. M., Lee, C. H., Yamada, K., Lee, Y. S., Regnault, L. P., Ronnow, H. M.
We study the effect of a magnetic field (applied along the c axis) on the low-energy, incommensurate magnetic fluctuations in superconducting La1.82Sr0.18CuO4. The incommensurate peaks at 9 meV,...
Chasing ghosts in reciprocal space - a novel inelastic neutron multiple scattering process (2004)
Ronnow, H. M., Regnault, L. P., Lorenzo, J. E.
We have discovered that a recently reported weak excitation branch in the spin-Peierls material CuGeO3 is in fact a ghost image of the primary magnetic excitation shifted in reciprocal space by a...
Inelastic neutron polarization analysis in low-dimensional systems (2004)
Regnault, L. P., Ronnow, H. M., Boullier, C., Lorenzo, J. E., Marin, C.
We will review recent results obtained by longitudinal polarization analysis and spherical neutron polarimetry (SNP) on typical low-dimensional strongly correlated electronic systems (spin-Peierls...
Longitudinal-neutron-polarization-analysis study of the spin dynamics in Sr14Cu24O41 (2004)
Boullier, C., Regnault, L. P., Lorenzo, J. E., Ronnow, H. M., Ammerahl, U., Dhalenne, G., ...
The crystallographic structure of the cuprate Sr14Cu24O41 is a misfit stacking of layers of two distinct quantum-spin systems: linear edge-sharing CuO2 chains and 2-leg Cu2O3 spin-ladders....
Bonville, P., Hodges, J. A., Bertin, E., Bouchaud, J. P., De Reotier, P. D., Regnault, L. P., ...
The very low temperature properties of two pyrochlore compounds, Yb2Ti2O7 and Gd2Sn2O7, were investigated using an ensemble of microscopic and bulk techniques. In both compounds, a first order...
Evidence for an incommensurate magnetic resonance in La(2-x)Sr(x)CuO(4) (2003)
Tranquada, J. M., Lee, C. H., Yamada, K., Lee, Y. S., Regnault, L. P., Ronnow, H. M.
We study the effect of a magnetic field (applied along the c-axis) on the low-energy, incommensurate magnetic fluctuations in superconducting La(1.82)Sr(0.18)CuO(4). The incommensurate peaks at 9...
Two resonant magnetic modes in an overdoped high-$\bf T_c$ superconductor (2003)
Pailhes, S., Sidis, Y., Bourges, P., Ulrich, C., Hinkov, V., Regnault, L. P., ...
A detailed inelastic neutron scattering study of the overdoped high temperature copper oxide superconductor ${Y_{0.9}Ca_{0.1}Ba_{2}Cu_3O_{7}}$ reveals two distinct magnetic resonant modes in the...
Transition and spin dynamics at very low temperature in the pyrochlores Yb2Ti2O7 and Gd2Sn2O7 (2003)
Bonville, P., Hodges, J. A., Bertin, E., Bouchaud, J. P., Ocio, M., De Reotier, P. Dalmas, ...
The very low temperature properties of two pyrochlore compounds, Yb2Ti2O7 and Gd2Sn2O7, were investigated using an ensemble of microscopic and bulk techniques. In both compounds, a first order...
Two Resonant Magnetic Modes in an Overdoped High Tc Superconductor (2003)
Pailhès, S., Sidis, Y., Bourges, P., Ulrich, C., Hinkov, V., Regnault, L. P., ...
The field-induced soliton phase of CuGeO3 (2003)
Ronnow, H. M., Mechthild, E., McMorrow, D. F., Regnault, L. P.
The quasi-1D S = 1/2 antiferromagnet CuGeO3 undergoes a spin-Peierls transition to a dimerised singlet quantum ground state, with S = 1 carrying pairs of domain walls as elementary excitations....
Inelastic neutron polarization analysis (2003)
Regnault, L. P., Ronnow, H. M., Lorenzo, J. E., Bellissent, R., Tasset, F.
We will review recent results obtained by longitudinal polarization analysis (LPA) and spherical neutron polarimetry (SNP) on typical "low-dimensional" strongly correlated electronic systems...
The resonant magnetic mode: a common feature of high-$T_C$ superconductors (2002)
Bourges, Ph., Keimer, B., Pailhès, S., Regnault, L. P., Sidis, Y., Ulrich, C.
Inelastic neutron scattering experiments in high-$T_c$ cuprates have evidenced a new magnetic excitation present in the superconducting state. In particular, recent experiments on single layer...
Elementary Excitations in Quantum Antiferromagnetic Chains: Dyons, Spinons and Breathers (2002)
Asano, T., Nojiri, H., Inagaki, Y., Ajiro, Y., Regnault, L. P., Boucher, J. P.
Considering experimental results obtained on three prototype compounds, TMMC, CsCoCl3 (or CsCoBr3) and Cu Benzoate, we discuss the importance of non-linear excitations in the physics of quantum (and...
He, H., Bourges, P., Sidis, Y., Ulrich, C., Regnault, L. P., Pailhes, S., ...
An unusual spin excitation mode observed by neutron scattering has inspired numerous theoretical studies of the interplay between charged quasiparticles and collective spin excitations in the copper...
Elementary Excitations in Quantum Antiferromagnetic Chains: Dyons, Spinons and Breathers (2002)
Asano, T., Nojiri, H., Inagaki, Y., Ajiro, Y., Regnault, L. P., Boucher, J. P.
Considering experimental results obtained on three prototype compounds, TMMC, CsCoCl3 (or CsCoBr3) and Cu Benzoate, we discuss the importance of non-linear excitations in the physics of quantum (and...
Elementary Excitations in Quantum Antiferromagnetic Chains: Dyons, Spinons and Breathers (2002)
Asano, T., Nojiri, H., Inagaki, Y., Ajiro, Y., Regnault, L. P., Boucher, J. P.
Considering experimental results obtained on three prototype compounds, TMMC, CsCoCl3 (or CsCoBr3) and Cu Benzoate, we discuss the importance of non-linear excitations in the physics of quantum (and...
Inelastic neutron scattering study of Tl2Ba2CuO6+δ (2002)
Keimer, B., He, H., Bourges, P., Sidis, Y., Ulrich, C., Regnault, L. P., ...
We present inelastic neutron scattering data on optimally doped Tl2Ba2CuO6+delta (T-c = 92 K), a single-layer copper oxide with undistorted copper oxide planes. The data indicate a magnetic resonant...
Magnetic Resonant Mode in the Single-Layer High-Temperature Superconductor Tl2Ba2CuO6+δ (2002)
He, H., Bourges, P., Sidis, Y., Ulrich, C., Regnault, L. P., Pailhès, S., ...
An unusual spin excitation mode observed by neutron scattering has inspired numerous theoretical studies of the interplay between charged quasiparticles and collective spin excitations in the copper...
X-ray anomalous scattering investigations on the charge order in $\alpha^\prime$-NaV$_2$O$_5$ (2001)
Grenier, S., Toader, A., Lorenzo, J. E., Joly, Y., Grenier, B., Ravy, S., ...
Anomalous x-ray diffraction studies show that the charge ordering in $\alpha^\prime$-NaV$_2$O$_5$ is of zig-zag type in all vanadium ladders. We have found that there are two models of the stacking...
Dzyaloshinski-Moriya Interaction in the 2D Spin Gap System SrCu2(BO3)2 (2001)
Cepas, O., Kakurai, K., Regnault, L. P., Ziman, T., Boucher, J. P., Aso, N., ...
The Dzyaloshinski-Moriya interaction partially lifts the magnetic frustration of the spin-1/2 oxide SrCu2(BO3)2. It explains the fine structure of the excited triplet state and its unusual magnetic...
Raymond, S., Regnault, L. P., Flouquet, J., Wildes, A., Lejay, P.
Inelastic neutron scattering experiments performed on a single crystal of the antiferromagnetic compound Ce$_{0.87}$La$_{0.13}$Ru$_{2}$Si$_{2}$ under applied pressures of up to 5 kbar are reported. A...
Antiferromagnetic ordering in superconducting ${\bf YBa_2Cu_3O_{6.5}}$ (2001)
Sidis, Y., Ulrich, C., Bourges, P., Bernhard, C., Niedermayer, C., Regnault, L. P., ...
Commensurate antiferromagnetic ordering has been observed in the superconducting high-$Tc$ cuprate ${\rm YBa_{2}Cu_{3}O_{6.5}}$ (${\rm T_{c}}$=55 K) by polarized and unpolarized elastic neutron...
Spin dynamics of quasi-2D ferromagnet La1.2Sr1.8Mn2O7 (2001)
Chatterji,T., Regnault,L. P., Thalmeier,P., Kamp,R. V. D., Schmidt,W., Hiess,A., ...
Resonant Spin Excitation in an Overdoped High Temperature Superconductor (2001)
He, H., Sidis, Y., Bourges, P., Gu, G. D., Ivanov, A., Koshizuka, N., ...
Antiferromagnetic Ordering in Superconducting YBa2Cu3O6.5 (2001)
Sidis, Y., Ulrich, C., Bourges, P., Bernhard, C., Niedermayer, C., Regnault, L. P., ...
Spin dynamics of quasi-2D ferromagnet La1.2Sr1.8Mn2O7 (2001)
Chatterji, T., Regnault, L. P., Thalmeier, P., Kamp, R. V. D., Schmidt, W., Hiess, A., ...
Magnetic resonance peak and nonmagnetic impurities (2001)
Sidis, Y., Bourges, P., Keimer, B., Regnault, L.P., Bossy, J., Ivanov, A., ...
Statics and dynamics of the magnetic soliton lattice in the high-field phase of CuGeO3 (2001)
Enderle, M., Ronnow, H. M., McMorrow, D. F., Regnault, L. P., Vorderwisch, P., Meissner, M., ...
Driven by antiferromagnetic quantum fluctuations on a deformable lattice, spin-Peierls systems dimerize magnetically and structurally at low temperatures. In this dimer phase all excitations with...
Excitations of the field-induced quantum soliton lattice in CuGeO3 (2001)
Enderle, M., Ronnow, H. M., McMorrow, D. F., Regnault, L. P., Dhalenne, G., Revcholevschi, A., ...
The incommensurate magnetic soliton lattice in the high-field phase of a spin-Peierls system results from quantum fluctuations. We have used neutron scattering techniques to study CuGeO3, allowing us...
Dzyaloshinski-Moriya Interaction in the 2D Spin Gap System SrCu2(BO3)2 (2001)
Boucher, J. P., Cépas, O., Kakurai, K., Regnault, L. P., Ziman, T.
Resonant Spin Excitation in an Overdoped High Temperature Superconductor (2001)
Bourges, P., Gu, G. D., He, H., Ivanov, A., Keimer, B., Koshizuka, N., ...
Charge Ordering and Spin Dynamics in NaV2O5 (2001)
Cepas, O., Grenier, B., Lorenzo, J. E., Regnault, L. P., Ziman, T.
Excitations of the field-induced soliton lattice in CuGeO3 (2000)
Enderle, M., Roennow, H. M., McMorrow, D. F., Regnault, L. P., Dhalenne, G., Revcolevschi, A., ...
Here we report the first inelastic neutron scattering study of the magnetic excitations in the incommensurate phase of a spin-Peierls material. The results on CuGeO3 provide direct evidence of a...
Charge Ordering and Spin Dynamics in NaV2O5 (2000)
Grenier, B., Cepas, O., Regnault, L. P., Lorenzo, J. E., Ziman, T., Boucher, J. P., ...
We report high-resolution neutron inelastic scattering experiments on the spin excitations of NaV2O5. Below Tc, two branches associated with distinct energy gaps are identified. From the dispersion...
Magnetic resonance peak and nonmagnetic impurities (2000)
Sidis, Y., Bourges, P., Keimer, B., Regnault, L. P., Bossy, J., Ivanov, A., ...
Nonmagnetic Zn impurities are known to strongly suppress superconductivity. We review their effects on the spin excitation spectrum in $\rm YBa_2Cu_3O_{7}$, as investigated by inelastic neutron...
A critical examination of the spin dynamics in high-$T_C$ cuprates (2000)
Bourges, Ph., Keimer, B., Regnault, L. P., Sidis, Y.
A critical examination of the spin dynamics in high-$T_C$ cuprates is made on the light of inelastic neutron scattering results obtained by different groups. Recent neutron data show that...
The Spin Excitation Spectrum in Superconducting ${\bf YBa_2Cu_3O_{6.85}}$ (2000)
Bourges, P., Sidis, Y., Fong, H. F., Regnault, L. P., Bossy, J., Ivanov, A., ...
A comprehensive inelastic neutron scattering study of magnetic excitations in the near-optimally doped high-temperature superconductor ${\rm YBa_{2}Cu_{3}O_{6.85}}$ is presented. The spin...
Resonant Spin Excitation in an Overdoped High Temperature Superconductor (2000)
He, H., Sidis, Y., Bourges, P., Gu, G. D., Ivanov, A., Koshizuka, N., ...
An inelastic neutron scattering study of overdoped Bi_2Sr_2CaCu_2O_{8+\delta} $ (T_c = 83 K) has revealed a resonant spin excitation in the superconducting state. The mode energy is E_res=38 meV,...
The spin excitation spectrum in superconducting YBa2Cu3O6.85 (2000)
Bourges, P., Sidis, Y., Fong, H. F., Regnault, L. P., Bossy, J., Ivanov, A., ...
Spin susceptibility in underdoped YBa2Cu3O6+x (2000)
Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., ...
Spin Excitations in Cuprates: From Underdoped to Overdoped State (2000)
Keimer, B., Bourges, P., Fong, H. F., Gu, G. D., He, H., Ivanov, A., ...
Quantum impurities and the neutron resonance peak in YBa2Cu3O7: Ni versus Zn (2000)
Sidis, Y., Bourges, P., Fong, H. F., Keimer, B., Regnault, L. P., Bossy, J., ...
Neutron scattering study of the incommensurate high-field phase of CuGeO3 (2000)
Ronnow, H. M., Enderle, M., McMorrow, D. F., Regnault, L. P., Dhalenne, G., Revcolevschi, A., ...
CuGeO3 is a good realization of a spin-Peierls system. Using neutron scattering, we have investigated the transition from the dimerized spin-Peierls phase to an incommensurately modulated high-field...
Neutron scattering study of the field-induced soliton lattice in CuGeO3 (2000)
Ronnow, H. M., Enderle, M., McMorrow, D. F., Regnault, L. P., Dhalenne, G., Revcolevschi, A., ...
CuGeO3 undergoes a transition from a spin-Peierls phase to an incommensurate phase at a critical field of H-c approximate to 12.5 T. In the high-field phase a lattice of solitons forms, with both...
High-field spin dynamics of antiferromagnetic quantum spin chains (2000)
Enderle, M., Regnault, L. P., Broholm, C., Reich, D., Zaliznyak, I., Sieling, M., ...
The characteristic internal order of macroscopic quantum ground states in one-dimensional spin systems is usually not directly accessible, but reflected in the spin dynamics and the field dependence...
Quantum Impurities and the Neutron Resonance Peak in ${\bf YBa_2 Cu_3 O_7}$: Ni versus Zn (1999)
Sidis, Y., Bourges, P., Fong, H. F., Keimer, B., Regnault, L. P., Bossy, J., ...
The influence of magnetic (S=1) and nonmagnetic (S=0) impurities on the spin dynamics of an optimally doped high temperature superconductor is compared in two samples with almost identical...
Spin Susceptibility in Underdoped $\bf YBa_2Cu_3O_{6+x}$ (1999)
Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., ...
We report a comprehensive polarized and unpolarized neutron scattering study of the evolution of the dynamical spin susceptibility with temperature and doping in three underdoped single crystals of...
Neutron Scattering from Magnetic Excitations in Bi_2 Sr_2 Ca_2 O_8+delta (1999)
Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Ivanov, A., Gu, G. D., ...
Many physical properties of the copper oxide high temperature superconductors appear to defy the conventional (one-electron) theory of metals, and the development of new theories incorporating strong...
Spin dynamics in high-$T_C$ superconductors (1999)
Bourges, Ph., Sidis, Y., Fong, H. F., Keimer, B., Regnault, L. P., Bossy, J., ...
Key features of antiferromagnetic dynamical correlations in high-$T_C$ superconductors cuprates are discussed. In underdoped regime, the sharp resonance peak, occuring exclusively in the SC state, is...
Observation of a Kosterlitz-Thouless state in the spin-Peierls phase transition in CuGeO3 (1999)
Lorenzo, J E, Regnault, L P, Langridge, S, Vettier, C, Sutter, C, Grubel, G, ...
Spin waves in the quasi-two-dimensional-ferromagnetic bilayer manganite La1.2Sr1.8Mn2O7. (1999)
Chatterji,T., Regnault,L. P., Thalmeier,P., Suryanarayanan,R., Dhaleene,G., Revcolevschi,A.
Spin dynamics in high-Tc superconductors. (1999)
Barnes, S. E., Bourges, P., Sidis, Y., Fong, H. F., Keimer, B., Regnault, L. P., ...
Effect of nonmagnetic impurities on the magnetic resonance peak in YBa2Cu3O7. (1999)
Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., ...
Neutron scattering from magnetic excitations in Bi2Sr2CaCu2O8+δ. (1999)
Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Ivanov, A., Gu, G. D., ...
Resonant spin excitations in YBa2Cu3O6-x and Bi2Sr2CaCu2O8+δ. (1999)
Keimer, B., Bourges, P., Fong, H. F., Sidis, Y., Regnault, L. P., Ivanov, A., ...
Spin waves in the quasi-two-dimensional-ferromagnetic bilayer manganite La1.2Sr1.8Mn2O7. (1999)
Chatterji, T., Regnault, L. P., Thalmeier, P., Suryanarayanan, R., Dhaleene, G., Revcolevschi, A.
Effect of Nonmagnetic Impurities on the Magnetic Resonance Peak in YBa2Cu3O7 (1998)
Fong, H. F., Bourges, P., Sidis, Y., Regnault, L. P., Bossy, J., Ivanov, A., ...
The magnetic excitation spectrum of a YBa_2 Cu_3 O_7 crystal containing 0.5% of nonmagnetic (Zn) impurities has been determined by inelastic neutron scattering. Whereas in the pure system a sharp...
Zheludev, A., Maslov, S., Shirane, G., Tsukada, I., Masuda, T., Uchinokura, K., ...
New neutron diffraction and inelastic scattering experiments are used to investigate in detail the field dependence of the magnetic structure and low-energy spin wave spectrum of the...
Magnetic neutron scattering investigation of the field-induced Griffiths phase in FeCl2 (1998)
Binek, Ch., Bertrand, D., Regnault, L. P., Kleemann, W.
Quasielastic neutron scattering has been utilized to investigate the Griffiths phase induced by an axial magnetic field in FeCl2 at temperatures Tc(H)
Regnault, L. P., Boucher, J. P., Moudden, H., Lorenzo, J. E., Hiess, A., Ammerahl, U., ...
Below about 150 K, the spin arrangement in the chain arrays of Sr14Cu24O41 is shown to develop in two dimensions (2D). Both the correlations and the dispersion of the observed elementary excitations...
Experimental evidence for Shekhtman-Entin-Wohlman-Aharony (SEA) interactions in Ba2CuGe2O7 (1998)
Zheludev, A., Maslov, S., Zaliznyak, I., Regnault, L. P., Masuda, T., Uchinokura, K., ...
New neutron diffraction and inelastic neutron scattering experiments on Ba2CuGe2O7 suggest that the previously suggested model for the magnetism of this material (an ideal sinusoidal spin spiral,...
Double gap and solitonic excitations in the spin-Peierls chain CuGeO3 (1998)
Ain, M., Lorenzo, J. E., Regnault, L. P., Dhalenne, G., Revcolevschi, A., Hennion, B., ...
We have studied magnetic excitations in the dimerized spin-Peierls phase of CuGeO3, by high resolution inelastic neutron scattering. We measured the well-defined spin triplet dispersive mode which is...
Bourges, Ph., Regnault, L. P., Sidis, Y., Bossy, J., Burlet, P., Vettier, C., ...
Inelastic neutron scattering has been used to determine the dynamic spin fluctuations in an underdoped high temperature superconductor YBCO_{6.8} single crystal. The magnetic resonance, that occurs...
High energy spin excitations in YBa_2 Cu_3 O_{6.5} (1997)
Bourges, Ph., Fong, H. F., Regnault, L. P., Bossy, J., Vettier, C., Milius, D. L., ...
Inelastic neutron scattering has been used to obtain a comprehensive description of the absolute dynamical spin susceptibility $\chi'' (q,\omega)$ of the underdoped superconducting cuprate YBa_2 Cu_3...
Magnetic order of the heavy-fermion URu2Si2 in a field of 12 T (1997)
Dijk, N.H. Van, Bourdarot, F., Fak, B., Lapierre, F., Regnault, L.P., Burlet, P., ...
Magnetic neutron-scattering investigation of the field-induced Griffiths phase in FeCl2 (1996)
Binek, Christian, Bertrand, D., Regnault, L.P., Kleeman, W.
Quasielastic neutron scattering has been utilized to investigate the Griffiths phase induced by an axial magnetic field in FeCl2 at temperatures Tc(H)⩽T⩽TN, where Tc(H) is the transition...
Neutron scattering experiments on Haldane conjecture (1993)
Kakurai, K, Regnault, L P, Steiner, M
Recent Advances in Magnetism of Transition Metal Compounds, Eds A Kotani, N Suzuki (World Scientific) p268 (1993)
Magnetic disorder in the spin-flop phase of Rb2MnCl4 (1992)
Tietze-Jaensch, H, Sieger, D, Jaitner, H, Geick, R, Schweiss, P, Trentmann, W, ...
Magnetic disorder in the spin-flop phase of Rb§2MnCl§4. (1992)
Tietze-Jaensch, H., Sieger, D., Jaitner, H., Geick, R., Schweiss, P., Treutmann, W., ...
Proc.of the Internat.Conf.on Magnetism, Edinburgh, GB, September 2-6, 1991 (Part II)
A high magnetic field and very low temperature cryomagnet for neutron scattering experiments (1984)
Rossat-Mignod, J., Olivier, J., Burlet, P., Regnault, L.P., Effantin, J.M., Gravil, B., ...
A cryomagnetic system is described in which the main components are a cryostat providing variable temperatures and a superconducting magnet The cryostat enables the magnet to operate either at 4.2 K...
A high magnetic field and very low temperature cryomagnet for neutron scattering experiments (1984)
Rossat-Mignod, J., Olivier, J., Burlet, P., Regnault, L.P., Effantin, J.M., Gravil, B., ...
A cryomagnetic system is described in which the main components are a cryostat providing variable temperatures and a superconducting magnet The cryostat enables the magnet to operate either at 4.2 K...
A high magnetic field and very low temperature cryomagnet for neutron scattering experiments (1984)
Rossat-Mignod, J., Olivier, J., Burlet, P., Regnault, L.P., Effantin, J.M., Gravil, B., ...
A cryomagnetic system is described in which the main components are a cryostat providing variable temperatures and a superconducting magnet The cryostat enables the magnet to operate either at 4.2 K...
Quantum dynamics and entanglement of spins on a square lattice
Christensen, N. B., Rønnow, H. M., McMorrow, D. F., Harrison, A., Perring, T. G., Enderle, M., ...
Bulk magnetism in solids is fundamentally quantum mechanical in nature. Yet in many situations, including our everyday encounters with magnetic materials, quantum effects are masked, and it often...