126 citations · 1.5k across the 41 of their papers we have counts for
20 papers · 1 filter
Fermi surface reconstruction and dimensional topology change in Nd-doped CeCoIn
J. Klotz, K. Götze, I. Sheikin +8
We performed low-temperature de Haas-van Alphen (dHvA) effect measurements on a CeNdCoIn series, for x = 0.02, 0.05, 0.1, and 1, down to T = 40 mK using torque magn…
121,123Sb NQR as a microscopic probe in Te doped correlated semimetal FeSb2 : emergence of electronic Griffith phase, magnetism and metallic behavior %
A. A. Gippius, S. V. Zhurenko, R. Hu +2
nuclear quadrupole resonance (NQR) was applied to in the low doping regime (\emph{x = 0, 0.01} and \emph{0.05}) as a microscopic zero field prob…
Enhancement of the thermoelectric properties in doped FeSb bulk crystals
Kefeng Wang, Rongwei Hu, John Warren +1
Kondo insulator FeSb with large Seebeck coefficient would have potential in thermoelectric applications in cryogenic temperature range if it had not been for large thermal cond…
Electronic Griffiths Phase in the Te - Doped Semiconductor FeSb
Rongwei Hu, Kefeng Wang, Hyejin Ryu +5
We report on the emergence of an Electronic Griffiths Phase (EGP) in the doped semiconductor FeSb, predicted for disordered insulators with random localized moments in the vi…
Direct determination of exchange parameters in Cs2CuBr4 and Cs2CuCl4: high-field ESR studies
S. A. Zvyagin, D. Kamenskyi, M. Ozerov +12
Spin-1/2 Heisenberg antiferromagnets CsCuCl and CsCuBr with distorted triangular-lattice structures are studied by means of electron spin resonance spectroscopy in…
Wiedemann-Franz law and non-vanishing temperature scale across the field-tuned quantum critical point of YbRh2Si2
J. -Ph. Reid, M. A. Tanatar, R. Daou +3
The in-plane thermal conductivity kappa(T) and electrical resistivity rho(T) of the heavy-fermion metal YbRh2Si2 were measured down to 50 mK for magnetic fields H parallel and perp…
Magnetic excitations in the spin-1/2 triangular-lattice antiferromagnet CsCuBr
S. A. Zvyagin, M. Ozerov, D. Kamenskyi +8
We report on high-field electron spin resonance (ESR) studies of magnetic excitations in the spin-1/2 triangular-lattice antiferromagnet CsCuBr. Frequency-field diagrams of…
Electronic thermoelectric power factor and metal-insulator transition in FeSb2
Qing Jie, Rongwei Hu, Emil Bozin +4
We show that synthesis-induced Metal -Insulator transition (MIT) for electronic transport along the orthorombic c axis of FeSb single crystals has greatly enhanced electrical…
From incommensurate correlations to mesoscopic spin resonance in YbRh2Si2
C. Stock, C. Broholm, F. Demmel +5
Spin fluctuations are reported near the magnetic field driven quantum critical point in YbRh2Si2. On cooling, ferromagnetic fluctuations evolve into incommensurate correlations loc…
Evidence of phonon-charge-density-waves coupling in ErTe
N. Lazarević, Z. V. Popović, Rongwei Hu +1
The vibrational properties of ErTe were investigated using Raman spectroscopy and analyzed on the basis of peculiarities of the RTe crystal structure. Four Raman active mod…
Evidence for electron-phonon interaction in FeMSb (M=Co, Cr) single crystals
N. Lazarević, Z. V. Popović, Rongwei Hu +1
We have measured polarized Raman scattering spectra of the FeCoSb and FeCrSb (00.5) single crystals in the temperature range be…
Absence of localized-spin magnetism in the narrow-gap semiconductor FeSb2
I. A. Zaliznyak, A. T. Savici, V. O. Garlea +2
We report inelastic neutron scattering measurements aimed at investigating the origin of the temperature-induced paramagnetism in the narrow-gap semiconductor FeSb2. We find that i…
Signatures of electron-boson coupling in half-metallic ferromagnet MnGe: study of electron self-energy obtained from infrared spectroscopy
S. V. Dordevic, N. Stojilovic, L. W. Kohlman +2
We report results of our infrared and optical spectroscopy study of a half-metallic ferromagnet MnGe. This compound is currently being investigated as a potential injector…
Pressure Evolution of a Field Induced Fermi Surface Reconstruction and of the Neel Critical Field in CeIn3
K. M. Purcell, D. Graf, M. Kano +12
We report high-pressure skin depth measurements on the heavy fermion material CeIn3 in magnetic fields up to 64 T using a self-resonant tank circuit based on a tunnel diode oscilla…
Evidence for the band broadening across the ferromagnetic transition in CrNbSe
W. Z. Hu, G. T. Wang, Rongwei Hu +4
The electronic structure of CrNbSe is studied via optical spectroscopy. We observe two low-energy interband transitions in the paramagnetic phase, which split into four…
Giant Carrier Mobility in Single Crystals of FeSb2
Rongwei Hu, V. F. Mitrovic, C. Petrovic
We report the giant carrier mobility in single crystals of FeSb2. Nonlinear field dependence of Hall resistivity is well described with the two-carrier model. Maximum mobility valu…
Composition and field tuned magnetism and superconductivity in Nd1-xCexCoIn5
Rongwei Hu, Y. Lee, J. Hudis +2
The Nd1-xCexCoIn5 alloys evolve from local moment magnetism (x = 0) to heavy fermion superconductivity (x =1). Magnetic order is observed over a broad range of x. For a substantial…
Weak Ferromagnetism in Fe1-xCoxSb2
Rongwei Hu, R. P. Hermann, F. Grandjean +4
Weak ferromagnetism in Fe1-xCoxSb2 is studied by magnetization and Mossbauer measurements. A small spontaneous magnetic moment of the order of 10^-3 uB appears along the b-axis for…
Anisotropy in magnetic and transport properties of Fe1-xCoxSb2
Rongwei Hu, V. F. Mitrovic, C. Petrovic
Anisotropic magnetic and electronic transport measurements were carried out on large single crystals of Fe1-xCoxSb2 (0<= x <=1). The semiconducting state of FeSb2 evolves into meta…
Optical investigation of the metal-insulator transition in
A. Perucchi, L. Degiorgi, R. Hu +2
We present a comprehensive optical study of the narrow gap semiconductor. From the optical reflectivity, measured from the far infrared up to the ultraviolet spectral rang…