10.6k citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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26 papers · 2 filters
Edge spin excitations and reconstructions of integer quantum Hall liquids
Yuhui Zhang, Kun Yang
We study the effect of electron-electron interaction on the charge and spin structures at the edge of integer quantum Hall liquids, under three different kinds of confining potenti…
Competition between the structural phase transition and superconductivity in IrPtTe as revealed by pressure effects
A. Kiswandhi, J. S. Brooks, H. B. Cao +4
Pressure-dependent transport measurements of IrPtTe are reported. With increasing pressure, the structural phase transition at high temperatures is enhanced while i…
Distinguishing particle-hole conjugated Fractional Quantum Hall states using quantum dot mediated edge transport
Hsin-Hua Lai, Kun Yang
We study theoretically edge transport of a fractional quantum Hall liquid, in the presence of a quantum dot inside the Hall bar with well controlled electron density and Landau lev…
High-magnetic field lattice length changes in URu2Si2
V. F. Correa, S. Francoual, M. Jaime +7
We report high magnetic field (up to 45 T) c-axis thermal expansion and magnetostriction experiments on URu2Si2 single crystals. The sample length change associated with the transi…
Classification of massive and gapless phases in bilayer graphene
Bitan Roy
We here classify of all the fully gapped \emph{massive} and \emph{gapless} phases in bilayer graphene. The effective low energy theory in bilayer graphene is constructed, and vario…
Magnetic field tuned quantum criticality of heavy fermion system YbPtBi
E. D. Mun, S. L. Bud'ko, C. Martin +8
In this paper, we present the systematic measurements of the temperature and magnetic field dependences of the thermodynamic and transport properties of the Yb-based heavy fermion…
Conductance noise in an out-of-equilibrium two-dimensional electron system
Ping V. Lin, Xiaoyan Shi, J. Jaroszynski +1
A study of the conductance noise in a two-dimensional electron system (2DES) in Si at low temperatures (T) reveals the onset of large, non-Gaussian noise after cooling from an equi…
Finite temperature crossovers and the quantum Widom line near the Mott transition
J. Vucicevic, H. Terletska, D. Tanaskovic +1
The experimentally established phase diagram of the half-filled Hubbard model features the existence of three distinct finite-temperature regimes, separated by extended crossover r…
Electron Correlation and Spin Dynamics in Iron Pnictides and Chalcogenides
Rong Yu, Qimiao Si, Pallab Goswami +1
Superconductivity in the iron pnictides and chalcogenides is closely connected to a bad-metal normal state and a nearby antiferromagnetic order. Therefore, considerable attention h…
Quantum superconducting criticality in graphene and topological insulators
Bitan Roy, Vladimir Juricic, Igor F. Herbut
The field theory of the semimetal-superconductor quantum phase transition for graphene and surface states of topological insulators is presented. The Lagrangian possesses the globa…
Possible spin liquid states with parton Fermi surfaces in SU(3) ring-exchange model on the triangular lattice
Hsin-Hua Lai
We consider a SU(3) ring-exchange model on a triangular lattice. Unlike the SU(2) case, under perturbation expansion of the SU(3) Hubbard model, the three-site ring exchange is pre…
Universal quantum criticality at the Mott-Anderson transition
M. C. O. Aguiar, V. Dobrosavljevic
We present a large N solution of a microscopic model describing the Mott-Anderson transition on a finite-coordination Bethe lattice. Our results demonstrate that strong spatial flu…
The effect of disorder on quantum phase transition in the double layered ruthenates (Sr1-xCax)3Ru2O7
Zhe Qu, Jin Peng, Tijiang Liu +4
(Sr1-xCax)3Ru2O7 is characterized by complex magnetic states, spanning from a long-range antiferromagnetically ordered state over an unusual heavy-mass nearly ferromagnetic (NFM) s…
Spin-orbit tuned metal-insulator transitions in single-crystal Sr2Ir1-xRhxO4 (0\leqx\leq1)
T. F. Qi, O. B. Korneta, L. Li +6
Sr2IrO4 is a magnetic insulator driven by spin-orbit interaction (SOI) whereas the isoelectronic and isostructural Sr2RhO4 is a paramagnetic metal. The contrasting ground states ha…
Kondo Physics in a Rare Earth Ion with Well Localized 4f Electrons
Jolanta Stankiewicz, Marco Evangelisti, Zachary Fisk +2
Dilute Nd in simple cubic LaB shows electrical resistance and specific heat features at low temperature consistent with a Kondo scale of 0.3 K. Nd has a well loc…
A cascade of magnetic field induced spin transitions in LaCoO3
M. M. Altarawneh, G. -W. Chern, N. Harrison +9
We present magnetization and magnetostriction studies of the insulating perovskite LaCoO3 in magnetic fields approaching 100 T. In marked contrast with expectations from single-ion…
Conserved charges of order-parameter textures in Dirac systems
Igor F. Herbut, Chi-Ken Lu, Bitan Roy
A simple expression for the induced fermion current in the presence of a texture in mass-order-parameters in two-dimensional condensed-matter Dirac systems is derived using the rep…
Electronic multicriticality in bilayer graphene
Vladimir Cvetkovic, Robert E. Throckmorton, Oskar Vafek
We map out the possible ordered states in bilayer graphene at the neutrality point by extending the previous renormalization group treatment of many-body instabilities to finite te…
Paramagnetic ground state with field-induced partial order in Nd_3Ga_5SiO_{14} probed by low-temperature heat transport
Q. J. Li, Z. Y. Zhao, H. D. Zhou +7
We study the low-temperature heat transport of Nd_3Ga_5SiO_{14}, which is a spin-liquid candidate, to probe the nature of ground state and the effect of magnetic field on the magne…
Softened magnetic excitations in the s = 3/2 distorted triangular antiferromagnet alpha-CaCr2O4
Dirk Wulferding, Kwang-Yong Choi, Peter Lemmens +5
The spin dynamics and magnetic excitations of the slightly distorted triangular s = 3/2 system alpha-CaCr2O4 are investigated by means of Raman spectroscopy and electron spin reson…
Magnetically-driven electronic phase separation in the semimetallic ferromagnet EuB
P. Das, A. Amyan, J. Brandenburrg +4
From measurements of fluctuation spectroscopy and weak nonlinear transport on the semimetallic ferromagnet EuB we find direct evidence for magnetically-driven electronic phase…
Two dimensional Dirac fermions and quantum magnetoresistance in CaMnBi
Kefeng Wang D. Graf, Limin Wang, Hechang Lei +2
We report two dimensional Dirac fermions and quantum magnetoresistance in single crystals of CaMnBi. The non-zero Berry's phase, small cyclotron resonant mass and first-princip…
Quantum transport of two-dimensional Dirac fermions in SrMnBi2
Kefeng Wang, D. Graf, Hechang Lei +2
We report two-dimensional quantum transport in SrMnBi single crystals. The linear energy dispersion leads to the unusual nonsaturated linear magnetoresistance since all Dirac f…
Coulomb impurity under magnetic field in graphene: a semiclassical approach
Yuhui Zhang, Yafis Barlas, Kun Yang
We address the problem of a Coulomb impurity in graphene in the presence of a perpendicular uniform magnetic field. We show that the problem can be solved below the supercritical i…