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Quantum critical scaling in the disordered itinerant ferromagnet UCoFeGe
K. Huang, S. Eley, P. F. S. Rosa +5
Belitz-Kirkpatrick-Vojta (BKV) theory shows in excellent agreement with experiment that ferromagnetic quantum phase transitions (QPTs) in clean metals are generally first-order due…
Superconducting gap structure in ambient-pressure-grown
Jian Zhang, K. Huang, Z. F. Ding +8
We have performed transverse-field muon spin relaxation (TF-SR) measurements on ambient-pressure-grown polycrystalline . From these measurement…
Upper critical magnetic field of OFBiS ( = La, Nd) superconductors at ambient and high pressure
Y. Fang, C. T. Wolowiec, A. J. Breindel +3
The upper critical field of polycrystalline samples of OFBiS ( = La, Nd) at ambient pressure (tetragonal structure) and high pressure (HP) (m…
Fermi-surface topologies and low-temperature phases of the filled Skutterudite compounds CeOsSb and NdOsSb
Pei Chun Ho, John Singleton, Paul A. Goddard +7
MHz conductivity, torque magnetometer and magnetization measurements are reported on single crystals of CeOsSb and NdOsSb using temperatures down to 0.5~K and…
Time Reversal Symmetry Breaking in the B Phase of the Heavy Fermion Superconductor PrOsSb
E. M. Levenson-Falk, E. R. Schemm, Y. Aoki +2
We present polar Kerr effect measurements of the filled skutterudite superconductor PrOsSb. Simultaneous AC susceptibility measurements allow us to observe the supercond…
Study of Localized Character of 4f Electrons and Ultrasonic Dispersions in SmOs4Sb12 by High-Pressure High-Frequency Ultrasonic Measurements
S. Mombetsu, T. Murazumi, H. Hidaka +4
We present high-frequency ultrasonic measurements on the filled skutterudite SmOsSb under hydrostatic pressure. The results clarify that the 4 electrons in this compo…
Analogy between the "Hidden Order" and the Orbital Antiferromagnetism in URuFeSi
H. -H. Kung, S. Ran, N. Kanchanavatee +6
We study URuFeSi, in which two types of staggered phases compete at low temperature as the iron concentration is varied: the nonmagnetic "hidden order" (HO) pha…
Robust Upward Dispersion of the Neutron Spin Resonance in the Heavy Fermion Superconductor CeYbCoIn
Yu Song, John Van Dyke, I. K. Lum +10
The neutron spin resonance is a collective magnetic excitation that appears in copper oxide, iron pnictide, and heavy fermion unconventional superconductors. Although the resonance…
Multiband superconductivity in the correlated electron filled skutterudite system Pr(1-x)Ce(x)Pt4Ge12
Y. P. Singh, R. B. Adhikari, S. Zhang +6
Studies of superconductivity in multiband correlated electronic systems has become one of the central topics in condensed matter/materials physics. In this paper, we present the re…
Effect of atomic disorder and Ce doping on superconductivity of Ca3Rh4Sn13: Electric transport properties under high pressure
A. Slebarski, J. Goraus, M. M. Maska +5
We report the observation of a superconducting state below 8K coexistent with a spin-glass state caused by atomic disorder in Ce substituted Ca3Rh4Sn13. Measurements of specific he…
Phase diagram and thermal expansion measurements on the system of URu_{2-x}Fe_xSi_2
S. Ran, C. T. Wolowiec, I. Jeon +9
Thermal expansion, electrical resistivity, magnetization, and specific heat measurements were performed on URuFeSi single crystals for various values of the Fe…
Crystalline Electric Field and Kondo Effect in SmOs4Sb12
Shota Mombetsu, Tatsuya Yanagisawa, Hiroyuki Hidaka +6
Our ultrasound results obtained in pulsed magnetic fields show that the filled-skutterudite compound SmOsSb has the quartet crystalline-electric-field ground st…
Investigation of superconducting and normal-state properties of the filled-skutterudite system PrPtGeSb
I. Jeon, K. Huang, D. Yazici +6
We report a study of the superconducting and normal-state properties of the filled-skutterudite system PrPtGeSb. Polycrystalline samples with Sb concentrations u…
29Si nuclear magnetic resonance study of URu2Si2 under pressure
K. R. Shirer, A. P. Dioguardi, B. T. Bush +8
We report 29Si nuclear magnetic resonance measurements of single crystals and aligned powders of URu2Si2 under pressure in the hidden order and paramagnetic phases. We find that th…