The precursor state to superconductivity in CeIrIn${_5}$: Unusual scaling of magnetotransport (2008)
Nair, Sunil, Nicklas, M., Steglich, F., Sarrao, J. L., Thompson, J. D., Schofield, A. J., ...
We present an analysis of the normal-state Hall effect and magnetoresistance in the heavy fermion superconductor CeIrIn${_5}$. It is demonstrated that the modified Kohler's scaling--which relates the...
Expansion of a quantum gas released from an optical lattice (2008)
Gerbier, F., Trotzky, S., Foelling, S., Schnorrberger, U., Thompson, J. D., Widera, A., ...
We analyze the interference pattern produced by ultracold atoms released from an optical lattice. Such interference patterns are commonly interpreted as the momentum distributions of the trapped...
Superconductivity in SrNi2As2 Single Crystals (2008)
Bauer, E. D., Ronning, F., Scott, B. L., Thompson, J. D.
The electrical resistivity \rho(T) and heat capacity C(T) on single crystals of SrNi2As2 and EuNi2As2 are reported. While there is no evidence for a structural transition in either compound, SrNi2As2...
Superconductivity in the Layered Intergrowth Compound La3Ni4P4O2 (2008)
Klimczuk, T., McQueen, T. M., Williams, A. J., Huang, Q., Ronning, F., Bauer, E. D., ...
Superconductivity with a Tc of 2.2 K is reported for the previously unknown compound La3Ni4P4O2. This compound represents a new structure type for the oxypnictide superconductors. Heat capacity...
First order magnetic transition in single crystal CaFe$_2$As$_2$ detected by $^{75}$As NMR (2008)
Curro, N. J., Klimczuk, T., Bauer, E. D., Ronning, F., Thompson, J. D.
We report $^{75}$As Nuclear Magnetic Resonance data in a single crystal of CaFe$_2$As$_2$. The Knight shift, the electric field gradient, and the spin lattice relaxation rate are strongly temperature...
First Order Phase Transition and Superconductivity in BaNi2As2 Single Crystals (2008)
Ronning, F., Kurita, N., Bauer, E. D., Scott, B. L., Park, T., Klimczuk, T., ...
We report the synthesis and physical properties of single crystals of stoichiometric BaNi2As2 that crystalizes in the ThCr2Si2 structure with lattice parameters a = 4.112(4) \AA and c = 11.54(2) \AA....
Klimczuk, T., Ronning, F., Bauer, E. D., Curro, N. J., Thompson, J. D.
We report a $^{75}$As NMR study of BaFe$_2$As$_2$ in both single crystal and polycrystal forms. The temperature dependence of the $^{75}$As NMR spectra shows magnetic broadening associated with a...
Pressure-induced superconductivity in single crystal CaFe2As2 (2008)
Park, Tuson, Park, Eunsung, Lee, Hanoh, Klimczuk, T., Bauer, E D, Ronning, F, ...
We report pressure-induced superconductivity in a single crystal of CaFe2As2. At atmospheric pressure, this material is antiferromagnetic below 170 K but under an applied pressure of 0.69 GPa becomes...
Synthesis and Properties of CaFe$_2$As$_2$ Single Crystals (2008)
Ronning, F., Klimczuk, T., Bauer, E. D., Volz, H., Thompson, J. D.
We report the synthesis and basic physical properties of single crystals of CaFe2As2, an isostructural compound to BaFe2As2 which has been recently doped to produce superconductivity. CaFe2As2...
Probing the nodal gap in the pressure-induced heavy fermion superconductor CeRhIn5 (2008)
Park, Tuson, Bauer, E. D., Thompson, J. D.
We report field-orientation specific heat studies of the pressure-induced heavy fermion superconductor CeRhIn5. Theses experiments provide the momentum-dependent superconducting gap function for the...
Gout, D., Gourdon, O., Bauer, E. D., Ronning, F., Thompson, J. D., Proffen, Th.
Crystal structures of a series of La1-xCexIn3 (x = 0.02, 0.2, 0.5, or 0.8) intermetallic compounds have been investigated by both neutron and X-ray diffraction, and their physical properties have...
Dispersive optomechanics: a membrane inside a cavity (2008)
Jayich, A. M., Sankey, J. C., Zwickl, B. M., Yang, C., Thompson, J. D., Girvin, S. M., ...
We present the results of theoretical and experimental studies of dispersively coupled (or "membrane in the middle") optomechanical systems. We calculate the linear optical properties of a high...
Electronic Duality in Strongly Correlated Matter (2008)
Park, T., Graf, M. J., Boulaevskii, L., Sarrao, J. L., Thompson, J. D.
Superconductivity develops from an attractive interaction between itinerant electrons that creates electron pairs which condense into a macroscopic quantum state--the superconducting state. On the...
Jelbert, G. R., Sasagawa, T., Fletcher, J. D., Park, T., Thompson, J. D., Panagopoulos, C.
We report on the charge kinetics of La_2CuO_4 lightly doped with Li and Sr. Impedance spectroscopy measurements down to 25mK and from 20Hz to 500kHz reveal evidence for low energy charge dynamics,...
Physical properties of the new Uranium ternary compounds U3Bi4M3 (M=Ni, Rh) (2008)
Klimczuk, T., Lee, Han-oh, Ronning, F., Durakiewicz, T., Kurita, N., Volz, H., ...
We report the properties of two new isostructural compounds, U3Bi4Ni3 and U3Bi4Rh3. The first of these compounds is non-metallic, and the second is a nearly ferromagnetic metal, both as anticipated...
Thermodynamical Signatures of an Excitonic Insulator (2008)
Bucher, Benno, Park, Tuson, Thompson, J. D., Wachter, Peter
In the 1960s speculations arose if a ground state exists in solid state materials with an electron and a hole bound to a pair with their spins added to integer values, i.e. excitons. Here we show...
Hall effect measurements in the heavy fermion system CeIrIn5 (2008)
Nair, S., Wirth, S., Nicklas, M., Gladun, A., Steglich, F., Sarrao, J. L., ...
Precursor State to Unconventional Superconductivity in CeIrIn5 (2008)
Nair, S., Wirth, S., Nicklas, M., Sarrao, J. L., Thompson, J. D., Fisk, Z., ...
Neutron diffraction study of magnetic field induced behavior in the heavy Fermion Ce3CO4Sn13 (2008)
Christianson, A.D., Goremychkin, E.A., Gardher, J.S., Kang, H.J., Chung, J.H., Manuel, R., ...
The specific heat of Ce3Co4Sn13 exhibits a crossover from heavy Fermion behavior with antiferromagnetic correlations at low field to single impurity Kondo behavior above 2 T. We have performed...
High quality mechanical and optical properties of commercial silicon nitride membranes (2007)
Zwickl, B. M., Shanks, W. E., Jayich, A. M., Yang, C., Jayich, A. C. Bleszynski, Thompson, J. D., ...
We have measured the optical and mechanical loss of commercial silicon nitride membranes. We find that 50 nm-thick, 1 mm^2 membranes have mechanical Q > 10^6 at 293 K, and Q > 10^7 at 300 mK, well...
A precursor state to unconventional superconductivity in CeIrIn${_5}$ (2007)
Nair, Sunil, Wirth, S., Nicklas, M., Sarrao, J. L., Thompson, J. D., Fisk, Z., ...
We present sensitive measurements of the Hall effect and magnetoresistance in CeIrIn${_5}$ down to temperatures of 50 mK and magnetic fields up to 15 T. The presence of a low temperature coherent...
Antiferromagnetic fluctuations and the Fulde-Ferrell-Larkin-Ovchinnikov state in CeCoIn5 (2007)
Nicklas, M., Miclea, C. F., Sarrao, J. L., Thompson, J. D., Sparn, G., Steglich, F.
The heavy-fermion superconductor CeCoIn5 is the first material, where different experimental probes show strong evidence pointing to the realization of the Fulde-Ferrell-Larkin-Ovchinnikov (FFLO)...
Andreev Reflection in Heavy-Fermion Superconductors and Order Parameter Symmetry in CeCoIn_5 (2007)
Park, W. K., Sarrao, J. L., Thompson, J. D., Greene, L. H.
Differential conductance spectra are obtained from nanoscale junctions on the heavy-fermion superconductor CeCoIn$_5$ along three major crystallographic orientations. Consistency and reproducibility...
Strong dispersive coupling of a high finesse cavity to a micromechanical membrane (2007)
Thompson, J. D., Zwickl, B. M., Jayich, A. M., Marquardt, Florian, Girvin, S. M., Harris, J. G. E.
Macroscopic mechanical objects and electromagnetic degrees of freedom couple to each other via radiation pressure. Optomechanical systems with sufficiently strong coupling are predicted to exhibit...
Physical properties of the noncentrosymmetric superconductor Mg_10Ir_19B_16 (2007)
Klimczuk, T., Ronning, F., Sidorov, V., Cava, R. J., Thompson, J. D.
Specific heat, electrical resistivity, and magnetic susceptibility measurements on a high quality sample of Mg10Ir19B16 provide a self-consistent determination of its superconducting properties. They...
Point-contact Andreev reflection spectroscopy of heavy-fermion-metal/superconductor junctions (2007)
Park, W. K., Stalzer, H., Sarrao, J. L., Thompson, J. D., Pham, L. D., Fisk, Z., ...
Our previous point-contact Andreev reflection studies of the heavy-fermion superconductor CeCoIn$_5$ using Au tips have shown two clear features: reduced Andreev signal and asymmetric background...
Magnetic structure of Cd-doped CeCoIn5 (2007)
Nicklas, M., Stockert, O., Park, Tuson, Habicht, K., Kiefer, K., Pham, L. D., ...
The heavy fermion superconductor CeCoIn5 is believed to be close to a magnetic instability, but no static magnetic order has been found. Cadmium doping on the In-site shifts the balance between...
Interacting Antiferromagnetic Droplets in Quantum Critical CeCoIn_5 (2007)
Urbano, R. R., Curro, N. J., Thompson, J. D., Pham, L. D., Fisk, Z.
The heavy fermion superconductor CeCoIn_5 can be tuned between superconducting and antiferromagnetic ground states by hole doping with Cd. Nuclear magnetic resonance (NMR) data indicate that these...
Magnetic structure of Cd-doped CeCoIn5 (2007)
Nicklas, M., Stockert, O., Park, T., Habicht, K., Kiefer, K., Pham, L. D., ...
Antiferromagnetic fluctuations and the Fulde-Ferrell-Larkin-Ovchinnikov state in CeCoIn5 (2007)
Nicklas, M., Miclea, C. F., Sarrao, J. L., Thompson, J. D., Sparn, G., Steglich, F.
Reversible Tuning of the Heavy Fermion Ground State in CeCoIn$_5$ (2006)
Pham, L. D., Park, Tuson, Maquilon, S., Thompson, J. D., Fisk, Z.
Cadmium-doping the heavy-fermion superconductor CeCoIn$_5$ at the percent level acts as an electronic tuning agent, sensitively shifting the balance between superconductivity and antiferromagnetism...
FFLO State and Peak Effect Dynamics in CeCoIn_5: Magnetization Studies (2006)
Gratens, X., Ferreira, L. Mendonca, Kopelevich, Y., Oliveira Jr., N. F., Pagliuso, P. G., Movshovich, R., ...
Magnetization measurements were performed on CeCoIn_5 at temperature down to 30 mK with the magnetic field applied in three different orientations: parallel, near parallel ($\sim$ 10$^{0}$ rotated)...
Microscopic evidence for field-induced magnetism in CeCoIn$_5$ (2006)
Urbano, R. R., Curro, N. J., Thompson, J. D., Sarrao, J. L., Vorontsov, A. B., ...
We present NMR data in the normal and superconducting states of CeCoIn$_5$ for fields close to $H_{\rm c2}(0)=11.8$ T in the $ab$ plane. Recent experiments identified a first-order transition from...
Magnetic Excitations of the 2-D Sm Spin Layers in Sm(La,Sr)CuO4 (2006)
Ronning, F., Capan, C., Moreno, N. O., Thompson, J. D., Bulaevskii, L. N., Movshovich, R., ...
We present specific heat and susceptibility data on Sm(La,Sr)CuO4 in magnetic fields up to 9 T and temperatures down to 100 mK. We find a broad peak in specific heat which is insensitive to magnetic...
Anisotropic intermediate valence in Yb2Rh3Ga9 (2006)
Christianson, A.D., Lawrence, J.M., Lobos, A.M., Aligia, A.A., Bauer, E.D., Moreno, N.O., ...
We report measurements of the inelastic neutron scattering spectrum for the anisotropic intermediate valence system Yb2Rh3Ga9. Calculations for the Anderson impurity model with crystal field terms...
Localized Excitation in the Hybridisation Gap in YbAl3 (2006)
Christianson, A.D., Fanelli, V.R., Lawrence, J.M., Goremychkin, E.A., Osborn, R., Bauer, E.A., ...
The intermediate valence compound YbAl3 exhibits a broad magnetic excitation with characteristic energy E1 ~ 50meV, of order of the Kondo energy (TK ~ 600-700K). In the low temperature (T < Tcoh ~...
Localized excitation in the hybridization gap in YbAl3 (2006)
Christianson, A.D., Fanelli, V.R., Lawrence, J.M., Goremychkin, E.A., Osborn, R., Bauer, E.D., ...
The intermediate valence compound YbAl3 exhibits a broad magnetic excitation in the inelastic neutron scattering spectrum with characteristic energy E150 meV, equal to the Kondo energy (TK~600–700...
Capan, C., Balicas, L., Murphy, T. P., Palm, E. C., Movshovich, R., Hall, D., ...
We report a comparative study of magnetoresistance and de-Haas-van-Alphen (dHvA) effect in CeIrIn$_5$ in the field range of 20T to 33T and between 0.03K and 1K. The metamagnetic transition is marked...
Hidden Magnetism and Quantum Criticality in the Heavy Fermion Superconductor CeRhIn5 (2006)
Park, Tuson, Ronning, F., Yuan, H. Q., Salamon, M. B., Movshovich, R., Sarrao, J. L., ...
With understood exceptions, conventional superconductivity does not coexist with long-range magnetic order[1]. In contrast, unconventional superconductivity develops near a boundary separating...
Pressure Study of Quantum Criticality in CeCoIn5 (2006)
Ronning, F., Capan, C., Bauer, E. D., Thompson, J. D., Sarrao, J. L., Movshovich, R.
We report resistivity measurements in the normal state of CeCoIn5 down to 40 mK and simultaneously in magnetic fields up to 9 T in the [001] crystallographic direction and under pressures up to 1.3...
Localized excitation in the hybridization gap in YbAl3 (2006)
Christianson, A D, Fanelli, V R, Lawrence, J M, Goremychkin, E A, Osborn, R, Bauer, E D, ...
Pressure Dependence of the Fulde-Ferrell-Larkin-Ovchinnikov State in CeCoIn5 (2006)
Miclea, C. F., Nicklas, M., Parker, D., Maki, K., Sarrao, J. L., Thompson, J. D., ...
Novel Coexistence of Superconductivity with Two Distinct Magnetic Orders (2005)
Christianson, A. D., Llobet, A., Bao, Wei, Gardner, J. S., Swainson, I. P., Lynn, J. W., ...
The heavy fermion Ce(Rh,Ir)In5 system exhibits properties that range from an incommensurate antiferromagnet on the Rh-rich end to an exotic superconductor on the Ir-rich end of the phase diagram. At...
Superconductivity in Actinide Materials (2005)
Thompson, J. D., Sarrao, J. L., Curro, N. J., Bauer, E. D., Morales, L. A., Wastin, F., ...
Actinide materials play a special role in condensed matter physics, spanning behaviours of itinerant d-electron and localized 4f-electron materials. An intermediate state, found notably in Pu-based...
Evolution of the heavy fermion state in Ce2IrIn8 (2005)
Heffner, R. H., Morris, G. D., Bauer, E. D., Sarrao, J. L., Thompson, J. D., MacLaughlin, D. E., ...
We report muon spin rotation Knight shift and susceptibility studies for 1 T applied field along the crystalline c- and a-axes of the heavy fermion compound Ce2IrIn8. Below a characteristic...
Park, Tuson, Sidorov, V. A., Lee, Hanoh, Fisk, Z., Thompson, J. D.
The Kondo lattice system CeZn_{0.66}Sb_{2} is studied by the electrical resistivity and ac magnetic susceptibility measurements at several pressures. At P=0 kbar, ferromagnetic and antiferromagnetic...
Anisotropic intermediate valence in Yb2M3Ga9 (M = Rh, Ir) (2005)
Christianson, A. D., Lawrence, J. M., Lobos, A. M., Aligia, A. A., Bauer, E. D., Moreno, N. O., ...
The intermediate valence compounds Yb2M3Ga9 (M = Rh, Ir) exhibit an anisotropic magnetic susceptibility. We report measurements of the temperature dependence of the 4f occupation number, nf(T), for...
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...
Anisotropic intermediate valence in Yb2M3Ga9 (M = Rh, Ir) (2005)
Christianson, A.D., Lawrence, J.M., Lobos, A.M., Aligia, A.A., Bauer, E.D., Moreno, N.O., ...
Localized excitation in the hybridization gap in YbAl3 (2005)
Christianson, A. D., Lawrence, J. M., Goremychkin, E. A., Osborn, R., Bauer, E. D., Sarrao, J. L., ...
The intermediate valence compound YbAl3 exhibits a broad magnetic excitation with characteristic energy E1 ~ 50meV, of order of the Kondo energy (TK ~ 600-700K). In the low temperature (T < Tcoh ~...
c-axis magnetotransport in CeCoIn$_{5}$ (2005)
Malinowski, A., Hundley, M. F., Capan, C., Ronning, F., Movshovich, R., Moreno, N. O., ...
We present the results of out-of-plane electrical transport measurements on the heavy fermion superconductor CeCoIn$_{5}$ at temperatures from 40 mK to 400 K and in magnetic field up to 9 T. For $T $...
Crystal-field effects in the mixed-valence compounds Yb2M3Ga9 (M= Rh, Ir) (2005)
Moreno, N. O., Lobos, A., Aligia, A. A., Bauer, E. D., Bobev, S., Fritsch, V., ...
Magnetic susceptibility, heat capacity, and electrical resistivity measurements have been carried out on single crystals of the intermediate valence compounds Yb2Rh3Ga9 and Yb2Ir3Ga9. These...