229 citations · 722 across the 22 of their papers we have counts for
4 papers · 1 filter
A Discrete Formulation of Second Stiefel-Whitney Class for Band Theory
Ken Shiozaki, Jing-Yuan Chen
Topological invariants in band theory are often formulated assuming that Bloch wave functions are smoothly defined over the Brillouin zone (BZ). However, first-principles band calc…
Large extrinsic phonon thermal Hall effect from resonant scattering
Xiao-Qi Sun, Jing-Yuan Chen, Steven A. Kivelson
Recent experimental observations of unexpectedly large thermal Hall conductivities, , in insulating materials, including the parent compounds of the high temperature supercond…
Doubling Theorem and Boundary States of Five-Dimensional Weyl Semimetal
Jing-Yuan Chen, Biao Lian, Shou-Cheng Zhang
We study the generic band structures of the five-dimensional (5D) Weyl semimetal, in which the band degeneracies are 2D Weyl surfaces in the momentum space, and may have non-trivia…
Berry Phase Physics in Free and Interacting Fermionic Systems
Jing-Yuan Chen
Berry phase plays an important role in many non-trivial phenomena over a broad range of many-body systems. In this thesis we focus on the Berry phase due to the change of the parti…