62 citations · 268 across the 24 of their papers we have counts for
24 papers
Gapless Higgs Mode in the Fulde-Ferrell-Larkin-Ovchinnikov State of a Superconductor
Zhao Huang, C. S. Ting, Jian-Xin Zhu +1
The Higgs mode associated with amplitude fluctuations of the superconducting gap in uniform superconductors usually is heavy, which makes its excitation and detection difficult. We…
Temperature-dependent spectral function of a Kondo impurity in an -wave superconductor
Chenrong Liu, Yixuan Huang, Yan Chen +1
Using the numerical renormalization group method, the effect due to a Kondo impurity in an -wave superconductor is examined at finite temperature (). The -behaviors of the…
Orbital magnetization of interacting Dirac fermions in graphene
Xin-Zhong Yan, C. S. Ting
We present a formalism to calculate the orbital magnetization of interacting Dirac fermions under a magnetic field. In this approach, the divergence difficulty is overcome with a s…
Integer Quantum Hall Effect of Interacting Electrons in Graphene
Xin-Zhong Yan, C. S. Ting
By taking into account the charge and spin orderings and the exchange interactions between all the Landau levels, we investigate the integer quantum Hall effect of electrons in gra…
Cooper Pairing and Phase Coherence in Iron Superconductor Fe1+x(Te,Se)
J. -X. Yin, Zheng Wu, X. Huang +14
The Cooper pairing and phase coherence are two fundamental aspects of superconductivity. Due to breaking time reversal symmetry, magnetic impurities are detrimental to superconduct…
Resonant Spin and Charge Hall Effects in 2D Electron Gas with Unequal Rashba and Dresselhaus Spin-Orbit Couplings under a Perpendicular Magnetic Field
Degang Zhang, C. S. Ting
We have investigated the complex two-dimensional electron system with unequal Rashba and Dresselhaus spin-orbit interactions in the presence of a perpendicular magnetic field. The…
Interaction driven quantum phase transition in fractional quantum spin Hall effects
Wei Li, D. N. Sheng, C. S. Ting +1
By means of finite size exact diagonalization we theoretically study the electronic many-body effects on the nearly flat-band structure with time-reversal symmetry in a checkerboar…
Evolution of quasiparticle states with and without a Zn-impurity in doped 122 iron pnictides
Lihua Pan, Jian Li, Yuan-Yen Tai +3
Based on a minimal two-orbital model [Tai {\it et al.}, Europhys. Lett. \textbf{103}, 67001 (2013)], which captures the canonical electron-hole-doping phase diagram of the iron-pni…
Interaction-induced localization of mobile impurities in ultracold systems
Jian Li, Jin An, C. S. Ting
The impurities, introduced intentionally or accidentally into certain materials, can significantly modify their characteristics or reveal their intrinsic physical properties, and t…
Pressure induced topological quantum phase transition in Sb_2Se_3
Wei Li, Xin-Yuan Wei, Jian-Xin Zhu +2
Based on the first-principles band structure calculations, we investigate the effects of hydrostatic pressure on the conventional insulator (CI) Sb_2Se_3 and predict that it underg…
Proposed Detection of Time Reversal Symmetry in Topological Surface States
Degang Zhang, C. S. Ting
By employing T-matrix approach, we investigate a nonmagnetic impurity located on the surface of three-dimensional topological insulators, where the time reversal symmetry is preser…
Ordered-Current State of Electrons in Bilayer Graphene
Xin-Zhong Yan, C. S. Ting
Based on the four-band continuum model, we study the ordered-current state (OCS) for electrons in bilayer graphene at the charge neutrality point. The present work resolves the puz…
Fermi surface evolution and checker-board block-spin antiferromagnetism in FeSe
Yuan-Yen Tai, Jian-Xin Zhu, Matthias J. Graf +1
We develop an effective multiorbital mean-field t-J Hamiltonian with realistic tight-binding and exchange parameters to describe the electronic and magnetic structures of iron-sele…
Impurity-induced quasiparticle interference in the parent compounds of iron-pnictide superconductors
Huaixiang Huang, Yi Gao, Degang Zhang +1
The impurity-induced quasiparticle interference(QPI) in the parent compounds of iron-pnictide superconductors is investigated based on a phenomenological two-orbital four-band mode…
Compressibility of Interacting Electrons in Bilayer Graphene
Xin-Zhong Yan, C. S. Ting
Using the renormalized-ring-diagram approximation, we study the compressibility of the interacting electrons in bilayer graphene. The compressibility is equivalent to the spin susc…
Spin dynamics in electron-doped pnictide superconductors
Yi Gao, Tao Zhou, C. S. Ting +1
The doping dependence of spin excitations in Ba(FeCo)As is studied based on a two-orbital model under RPA approximation. The interplay between the spin-de…
Hall Conductivity in a Spin-Triplet Superconductor
Wonkee Kim, F. Marsiglio, C. S. Ting
We calculate the Hall conductivity for a spin-triplet superconductor, using a generalized pairing symmetry dependent on an arbitrary phase, $\vphi$. A promising candidate for such…
Study of two-dimensional electron systems in the renormalized-ring-diagram approximation
Xin-Zhong Yan, C. S. Ting
With a super-high-efficient numerical algorithm, we are able to self-consistently calculate the Green's function in the renormalized-ring-diagram approximation for a two-dimensiona…
Current induced local spin polarization due to the spin-orbit coupling in a two dimensional narrow strip
Q. Wang, L. Sheng, C. S. Ting
The current induced local spin polarization due to weak Rashba spin-orbit coupling in narrow strip is studied. In the presence of longitudinal charge current, local spin polarizati…
Numerical Study of Transition to Stripe Phases in High Temperature Superconductors Under a Strong Magnetic Field
Yan Chen, H. Y. Chen, C. S. Ting
The nature of spin density wave (SDW) and charge density wave (CDW) in the mixed state of high T_c superconductors (HTS) is investigated by using the self-consistent Bogoliubov-de…
Novel Quantum Spin Assisted Tunneling in Half Metallic Manganite Tunnel Junctions
R. Y. Gu, L. Sheng, C. S. Ting
The electron tunneling in half metallic manganite tunnel junctions is studied by using a quantum mechanically treated double exchange model. We show that the stimulation of spin ex…
Superconductivity in Ferromagnetic RuSr_2GdCu_2O_8
Jian-Xin Zhu, C. S. Ting, C. W. Chu
The phase diagram of temperature versus exchange field is obtained within a BCS model for d-wave superconductivity in CuO_2 layers which is coupled to ferromagnetic RuO_2 layers in…
Competing effects of mass anisotropy and spin Zeeman coupling on the upper critical field of a mixed - and s-wave superconductor
Wonkee Kim, Jian-Xin Zhu, C. S. Ting
Based on the linearized Eilenberger equations, the upper critical field of mixed d- and s-wave superconductors has been microscopically studied with an emphasis on the c…
Theory of Ferromagnetic Metal to Paramagnetic Insulator Transition i in R_{1-x}A_{x}MnO_{3}
L. Sheng, D. N. Sheng, C. S. Ting
The double-exchange model for the Mn oxides with orbital degeneracy is studied with including on-site Coulomb repulsion, Jahn-Teller (J-T) coupling and doping-induced disorder. In…