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19912026
most citedPlanck 2015 results. XIII. Cosmological parameters

10.6k citations

Showing 2012 · cond-mat.str-elShow all

26 papers · 2 filters

cond-mat.str-el2012★ 10 cited

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…

cond-mat.str-el2012★ 51 cited

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…

cond-mat.str-el2012★ 11 cited

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…

cond-mat.str-el2012★ 18 cited

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…

cond-mat.str-el2012★ 26 cited

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…

cond-mat.str-el2012★ 77 cited

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…

cond-mat.str-el2012★ 13 cited

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…

cond-mat.str-el2012★ 100 cited

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…

cond-mat.str-el2012★ 9 cited

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…

cond-mat.str-el2012★ 90 cited

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…

cond-mat.str-el2012★ 9 cited

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…

cond-mat.str-el2012★ 24 cited

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…

cond-mat.str-el2012★ 5 cited

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…

cond-mat.str-el2012★ 114 cited

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…

cond-mat.str-el2012★ 12 cited

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…

cond-mat.str-el2012★ 65 cited

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…

cond-mat.str-el2012★ 9 cited

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…

cond-mat.str-el2012★ 94 cited

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…

cond-mat.str-el2012★ 27 cited

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…

cond-mat.str-el2012★ 12 cited

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…

cond-mat.str-el2012★ 43 cited

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…

cond-mat.str-el2012★ 138 cited

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…

cond-mat.str-el2012★ 147 cited

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…

cond-mat.str-el2012★ 33 cited

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…