5 papers
Coulomb instabilities of 3D higher-order topological insulators
Peng-Lu Zhao, Xiao-Bin Qiang, Hai-Zhou Lu +1
Topological insulator (TI) is an exciting discovery because of its robustness against disorder and interactions. Recently, higher-order TIs have been attracting increasing attentio…
Theory for magnetic-field-driven 3D metal-insulator transitions in the quantum limit
Peng-Lu Zhao, Hai-Zhou Lu, X. C. Xie
Metal-insulator transitions driven by magnetic fields have been extensively studied in 2D, but a 3D theory is still lacking. Motivated by recent experiments, we develop a scaling t…
Large-momentun tail of one-dimensional Fermi gases with spin-orbit coupling
Fang Qin, Pengfei Zhang, Peng-Lu Zhao
We study the contacts, large-momentum tail, radio-frequency spectroscopy, and some other universal relations for an ultracold one-dimensional (1D) two-component Fermi gas with spin…
Interplay between tilt, disorder, and Coulomb interaction in type-I Dirac fermions
Peng-Lu Zhao, An-Min Wang
We investigate the mutual influence of tilt, disorder, and Coulomb interaction in a type-I Dirac semimetal (DSM) with -direction tilt by performing a renormalization group analy…
Condition for the emergence of a bulk Fermi arc in disordered Dirac-fermion systems
Peng-Lu Zhao, An-Min Wang, Guo-Zhu Liu
We present a renormalization group analysis of the disorder effects on the low-energy behaviors of twodimensional tilted Dirac-fermion systems, in which the fermions have two disti…