171 citations · 443 across the 11 of their papers we have counts for
11 papers
Surface chiral Abelian topological order on multilayer cluster Mott insulators
Xu-Ping Yao, Chao-Kai Li, Gang v. Chen
The surface states of a symmetry protected topological state can have many possibilities. Here we propose a chiral Abelian topological order on a distinct surface of a multilayer-s…
Universal excitonic superexchange in spin-orbit-coupled Mott insulators
Chao-Kai Li, Gang Chen
We point out the universal presence of the excitonic superexchange in spin-orbit-coupled Mott insulators. It is observed that, the restriction to the lowest spin-orbit-entangled "$…
Fractionalization on the Surface: Is Type-II Terminated -TaS Surface an Anomalously Realized Spin Liquid?
Chao-Kai Li, Xu-Ping Yao, Jianpeng Liu +1
The type-II terminated -TaS surface of a three-dimensional -TaS bulk material realizes the effective spin- degree of freedom on each David star cluster with ${…
A non-iterative method for the vertex corrections of the Kubo formula for electric conductivity
Yi-Wen Wei, Chao-Kai Li, Yuchuang Cao +1
In computing electric conductivity based on the Kubo formula, the vertex corrections describe such effects as anisotropic scattering and quantum interference and are important to q…
Bond ordering and phase transitions in NaIrO under high pressure
Kaige Hu, Zhimou Zhou, Yi-Wen Wei +2
The Kitaev model of spin-1/2 on a honeycomb lattice supports degenerate topological ground states and may be useful in topological quantum computation. NaIrO with honey…
Magnetoconductivity of type-II Weyl semimetals
Yi-Wen Wei, Chao-Kai Li, Jingshan Qi +1
Type-II Weyl semimetals are characterized by the tilted linear dispersion in the low-energy excitations, mimicking Weyl fermions but with manifest violation of the Lorentz invarian…
Geometric effects in the effective-mass theory and topological optical superlattices
Chao-Kai Li, Qian Niu, Ji Feng
Cold atoms tailored by an optical lattice have become a fascinating arena for simulating quantum physics. In this area, one important and challenging problem is creating effective…
Superconductivity in topologically nontrivial material Au2Pb
Ying Xing, He Wang, Chaokai Li +13
The search for nontrivial superconductivity in novel quantum materials is currently a most attractive topic in condensed matter physics and material science. The experimental studi…
The Chiral Anomaly and Ultrahigh Mobility in Crystalline HfTe5
Huichao Wang, Chao-Kai Li, Haiwen Liu +11
HfTe5 is predicted to be a promising platform for studying topological phases. Here through an electrical transport study, we present the first observation of chiral anomaly and ul…
Competing Magnetic Orderings and Tunable Topological States in Two-Dimensional Hexagonal Organometallic Lattices
Hyun-Jung Kim, Chaokai Li, Ji Feng +2
The exploration of topological states is of significant fundamental and practical importance in contemporary condensed matter physics, for which the extension to two-dimensional (2…
Dynamical Evolution of Anisotropic Response in Black Phosphorus under Ultrafast Photoexcitation
Shaofeng Ge, Chaokai Li, Zhimin Zhang +8
Black phosphorus has recently emerged as a promising material for high performance electronic and optoelectronic device for its high mobility, tunable mid-infrared bandgap and anis…