Shu, Lei, MacLaughlin, D. E., Beyermann, W. P., Heffner, R. H., Morris, G. D., Bernal, O. O., ...
Transverse-field muon spin rotation ($\mu$SR) experiments in the heavy-fermion superconductor PrOs$_{4}$Sb$_{12}$ ($T_{c}=1.85$ K) suggest that the superconducting penetration depth $\lambda(T)$ is...
Comment on "Magnetic Order in the Pseudogap Phase of High-Tc Superconductors'' (2008)
In a recent Letter, Fauque et al. [Phys. Rev. Lett. 96, 197001 (2006)] reported the detection of a novel magnetic order in YBCO near the pseudogap transition temperature T*. They remark that this...
The focus of this paper is on recent progress in muon spin rotation (muSR) studies of the vortex cores in type-II superconductors. By comparison of muSR measurements of the vortex core size in a...
Sonier, J. E., Ilton, M., Pacradouni, V., Kaiser, C. V., Sabok-Sayr, S. A., Ando, Y., ...
We report that in YBa2Cu3Oy and La2-xSrxCuO4 there is a spatially inhomogeneous response to magnetic field for temperatures T extending well above the bulk superconducting transition temperature Tc....
Role of CuO chains in vortex core structure in YBa2Cu3O{7-delta} (2007)
Atkinson, W. A., Sonier, J. E.
The Bogoliubov-deGennes equations are solved for a proximity model for YBa_2Cu_3O_{7-\delta} in a magnetic field. The model explicitly includes the effects of the one-dimensional CuO chains, whose...
Sonier, J. E., Callaghan, F. D., Ando, Y., Kiefl, R. F., Brewer, J. H., Kaiser, C. V., ...
Highly disordered magnetism confined to individual weakly interacting vortices is detected by muon spin rotation in two different families of high-transition-temperature superconductors, but only in...
Sonier, J. E., Sabok-Sayr, S. A., Callaghan, F. D., Kaiser, C. V., Pacradouni, V., Brewer, J. H., ...
We report on muon spin rotation measurements of the internal magnetic field distribution n(B) in the vortex solid phase of YBa2Cu3Oy (YBCO) single crystals, from which we have simultaneously...
Multiband superconductivity and penetration depth in PrOs4Sb12 (2007)
MacLaughlin, D. E., Shu, Lei, Heffner, R. H., Sonier, J. E., Callaghan, F. D., Morris, G. D., ...
The effective superconducting penetration depth measured in the vortex state of PrOs4Sb12 using transverse-field muon spin rotation (TF-muSR) exhibits an activated temperature dependence at low...
Avoided Quantum Criticality in YBa_2Cu_3O_y and La_{2-x}Sr_xCuO_4 (2006)
Sonier, J. E., Callaghan, F. D., Ando, Y., Kiefl, R. F., Brewer, J. H., Kaiser, C. V., ...
Spin-glass magnetism confined to individual weakly interacting vortices is detected in two different families of high-transition-temperature (T_c) superconductors, but only in samples on the...
Laulajainen, M., Callaghan, F. D., Kaiser, C. V., Sonier, J. E.
We report muon spin rotation measurements on a single crystal of the marginal type-II superconductor V. The measured internal magnetic field distributions are modeled assuming solutions of the...
Magnetic field dependence of muon spin relaxation in geometrically frustrated Gd2Ti2O7 (2006)
Dunsiger, S. R., Kiefl, R. F., Chakhalian, J. A., Greedan, J. E., MacFarlane, W. A., Miller, R. I., ...
Sonier, J. E., Callaghan, F. D., Brewer, J. H., Hardy, W. N., Bonn, D. A., Liang, R.
This paper has been withdrawn by the authors, because of results obtained from a more exhaustive study of both YBa_2Cu_3O_y and La_{2-x}Sr_xCuO_4 (see cond-mat/0610051).
Field dependence of the vortex core size in a multi-band superconductor (2005)
Callaghan, F. D., Laulajainen, M., Kaiser, C. V., Sonier, J. E.
The magnetic field dependence of the vortex core size in the multi-band superconductor NbSe2 has been determined from muon spin rotation measurements. The spatially extended nature of the...
Effect of Delocalized Vortex Core States on the Specific Heat of Nb (2005)
Sonier, J. E., Hundley, M. F., Thompson, J. D.
The magnetic field (B) dependence of the electronic specific heat for a simple BCS type-II superconductor has been determined from measurements on pure niobium (Nb). Contrary to expectations, the...
Penetration depth, symmetry breaking, and gap nodes in superconducting PrOs4Sb12 (2005)
Shu, Lei, MacLaughlin, D. E., Heffner, R. H., Morris, G. D., Bernal, O. O., Callaghan, F., ...
Transverse-field muon spin relaxation rates in single crystals of the heavy-fermion superconductor PrOs4Sb12 (Tc = 1.85 K) are nearly constant in the vortex state for temperatures below ~0.5Tc. This...
Investigations of the Core Structure of Magnetic Vortices in Type-II Superconductors by muSR (2004)
Muon spin rotation (muSR) has emerged as the leading experimental probe of the effective size of magnetic vortices in type-II superconductors. muSR data on several different classes of type-II...
Disorder, inhomogeneity and spin dynamics in f-electron non-Fermi liquid systems (2004)
MacLaughlin, D. E., Heffner, R. H., Bernal, O. O., Ishida, K., Sonier, J. E., Nieuwenhuys, G. J., ...
Muon spin rotation and relaxation ($\mu$SR) experiments have yielded evidence that structural disorder is an important factor in many f-electron-based non-Fermi-liquid (NFL) systems. Disorder-driven...
Sonier, J. E., Callaghan, F. D., Miller, R. I., Boaknin, E., Taillefer, L., Kiefl, R. F., ...
We report muon spin rotation measurements on the conventional type-II superconductor V3Si that provide clear evidence for changes to the inner structure of a vortex due to the delocalization of bound...
Superconductivity and Field-Induced Magnetism in Pr$_{2-x}$Ce$_x$CuO$_4$ Single Crystals (2003)
Sonier, J. E., Poon, K. F., Luke, G. M., Kyriakou, P., Miller, R. I., Liang, Ruixing, ...
We report muon-spin rotation/relaxation (muSR) measurements on single crystals of the electron-doped high-T_c superconductor Pr$_{2-x}$Ce$_x$CuO$_4$. In zero external magnetic field,...
Chakhalian, J. A., Kiefl, R. F., Miller, R., Brewer, J., Dunsiger, S. R., Morris, G., ...
We report muon spin rotation measurements of the local magnetic susceptibility around a positive muon in the paramagnetic state of the quasi one-dimensional spin 1/2 antiferromagnet dichlorobis...
Magnetism and superconductivity in CeRh_{1-x}Ir_xIn_5 heavy fermion materials (2003)
Morris, G. D., Heffner, R. H., Sonier, J. E., MacLaughlin, D. E., Bernal, O. O., Nieuwenhuys, G. J., ...
We report on zero-field muon spin relaxation studies of cerium based heavy-fermion materials CeRh_{1-x}Ir_xIn_5. In the superconducting x=0.75 and 1 compositions muon spin relaxation functions were...
muSR and NMR in f-electron non-Fermi liquid materials (2002)
MacLaughlin, D. E., Rose, M. S., Young, Ben-Li, Bernal, O. O., Heffner, R. H., Morris, G. D., ...
Magnetic resonance (muSR and NMR) studies of f-electron non-Fermi-liquid (NFL) materials give clear evidence that structural disorder is a major factor in NFL behavior. Longitudinal-field muSR...
muSR linewidth and isotropic pairing in superconducting PrOs4Sb12 (2002)
MacLaughlin, D. E., Sonier, J. E., Heffner, R. H., Bernal, O. O., Rose, M. S., ...
Transverse-field muon spin rotation measurements in the vortex-lattice mixed state of the heavy-fermion (HF) superconductor PrOs4Sb12 yield a temperature dependence of the penetration depth...
Nonlocal Effects and Shrinkage of the Vortex Core Radius in YNi2B2C Probed by muSR (2002)
Ohishi, K., Kakuta, K., Akimitsu, J., Higemoto, W., Kadono, R., Sonier, J. E., ...
The magnetic field distribution in the vortex state of YNi2B2C has been probed by muon spin rotation (muSR). The analysis based on the London model with nonlocal corrections shows that the vortex...
Evidence for Static Magnetism in the Vortex Cores of Ortho-II YBa$_2$Cu$_3$O$_{6.50}$ (2001)
Miller, R. I., Kiefl, R. F., Brewer, J. H., Sonier, J. E., Chakhalian, J., Dunsiger, S., ...
Evidence for static alternating magnetic fields in the vortex cores of underdoped YBa$_2$Cu$_3$O$_{6+x}$ is reported. Muon spin rotation measurements of the internal magnetic field distribution of...
Lumsden, M. D., Dunsiger, S. R., Sonier, J. E., Miller, R. I., Kiefl, R. F., Jin, R., ...
We report transverse field and zero field muon spin rotation studies of the superconducting rhenium oxide pyrochlore, Cd2Re2O7. Transverse field measurements (H=0.007 T) show line broadening below...
Susceptibility Inhomogeneity and Non-Fermi-Liquid Behavior in Ce(Ru_{0.5}Rh_{0.5})_2Si_2 (2001)
MacLaughlin, D. E., Bernal, O. O., Sonier, J. E., Heffner, R. H., Taniguchi, T., Miyako, Y.
Magnetic susceptibility and muon spin rotation (\muSR) experiments have been carried out to study the effect of structural disorder on the non-Fermi-liquid (NFL) behavior of the heavy-fermion alloy...
Slow Spin Dynamics in Non-Fermi-Liquid UCu_{5-x}Pd_x, x = 1.0 and 1.5 (2001)
MacLaughlin, D. E., Heffner, R. H., Bernal, O. O., Nieuwenhuys, G. J., Sonier, J. E., Rose, M. S., ...
Low-temperature muon spin-lattice relaxation measurements in the non-Fermi-liquid heavy-fermion alloys UCu_{5-x}Pd_x, x = 1.0 and 1.5, indicate inhomogeneously distributed f-electron spin fluctuation...
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Heffner, R. H., Poon, K., Stubbs, S. L., ...
Zero-field muon spin relaxation (ZF-$\mu$SR) measurements were undertaken on under- and overdoped samples of superconducting YBa$_2$Cu$_3$O$_{6+x}$ to determine the origin of the weak static...
Heffner, R. H., MacLaughlin, D. E., Sonier, J. E., Nieuwenhuys, G. J., Bernal, O. O., Simovic, Barbara, ...
This paper has been withdrawn by the authors. We performed additional zero-field muon spin relaxation measurements in the superconducting state of CeIrIn$_5$ and found that the spontaneous fields...
Glassy Spin Dynamics in Non-Fermi-Liquid UCu_{5-x}Pd_x, x = 1.0 and 1.5 (2000)
MacLaughlin, D. E., Bernal, O. O., Heffner, R. H., Nieuwenhuys, G. J., Rose, M. S., Sonier, J. E., ...
Local f-electron spin dynamics in the non-Fermi-liquid heavy-fermion alloys UCu_{5-x}Pd_x, x = 1.0 and 1.5, have been studied using muon spin-lattice relaxation. The sample-averaged asymmetry...
Positive Muon Knight Shift Measurements in U_{0.965}Th_{0.035}Be_{13} Single Crystals (2000)
Sonier, J. E., Heffner, R. H., MacLaughlin, D. E., Nieuwenhuys, G. J., Bernal, O., Movshovich, R., ...
Muon spin rotation measurements of the temperature dependence of the Knight shift in single crystals of U_{0.965}Th_{0.035}Be_{13} have been used to study the static spin susceptibility below the...
Observation of two time scales in the ferromagnetic manganite La(1-x)Ca(x)MnO(3), x = 0.3 (1999)
Heffner, R. H., Sonier, J. E., MacLaughlin, D. E., Nieuwenhuys, G. J., Ehlers, G., Mezei, F., ...
We report new zero-field muon spin relaxation and neutron spin echo measurements in ferromagnetic (FM) (La,Ca)MnO3 which taken together suggest two spatially separated regions in close proximity...
Melting and Dimensionality of the Vortex Lattice in Underdoped YBa2Cu3O6.60 (1999)
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Bonn, D. A., Chakhalian, J., Dunsiger, S. R., ...
Muon spin rotation measurements of the magnetic field distribution in the vortex state of the oxygen deficient high-Tc superconductor YBa{2}Cu{3}O{6.60} reveal a vortex-lattice melting transition at...
Field Induced Reduction of the Low Temperature Superfluid Density in YBa2Cu3O6.95 (1999)
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Morris, G. D., Miller, R. I., Bonn, D. A., ...
A novel high magnetic field (8 T) spectrometer for muon spin rotation has been used to measure the temperature dependence of the in-plane magnetic penetration depth in YBa2Cu3O6.95. At low H and low...
Sonier, J. E., Hundley, M. F., Thompson, J. D., Brill, J. W.
The magnetic field dependence of the electronic specific heat C(H) in the s-wave superconductor NbSe_2 shows curvature at low fields, resembling the near H^1/2 term in C(H) which has been reported in...
Expansion of the Vortex Cores in YBa2Cu3O6.95 at Low Magnetic Fields (1998)
Sonier, J. E., Kiefl, R. F., Brewer, J. H., Bonn, D., Dunsiger, S., Liang, R., ...
Muon spin rotation spectroscopy has been used to measure the effective size of the vortex cores in optimally doped YBa2Cu3O6.95 as a function of temperature and magnetic field deep in the...
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Bonn, D. A., Dunsiger, S. R., Hardy, W. N., ...
The internal field distribution in the vortex state of YBa2Cu3O6.60 is shown to be a sensitive measure of both the magnetic penetration depth and the vortex-core radius. The temperature dependence of...
Sonier, J. E., Kiefl, R. F., Brewer, J. H., Chakhalian, J., Dunsiger, S. R., MacFarlane, W. A., ...
Muon-spin rotation spectroscopy has been used to measure the internal magnetic field distribution in NbSe2 for Hc1
Dunsiger, S. R., Kiefl, R. F., Chow, K. H., Gaulin, B. D., Gingras, M. J. P., Greedan, J. E., ...
The spin dynamics of geometrically frustrated pyrochlore antiferromagnets Y2Mo2O7 and Tb2Mo2O7 have been investigated using muon spin relaxation. A dramatic slowing down of the moment fluctuations...