3 papers
cond-mat.mtrl-sci2020
qeirreps: an open-source program for Quantum ESPRESSO to compute irreducible representations of Bloch wavefunctions
Akishi Matsugatani, Seishiro Ono, Yusuke Nomura +1
Bloch wavefunctions in solids form a representation of crystalline symmetries. Recent studies revealed that symmetry representations in band structure can be used to diagnose the t…
cond-mat.str-el2018
Connecting higher-order topological insulators to lower-dimensional topological insulators
Akishi Matsugatani, Haruki Watanabe
In recent years, the role of crystal symmetries in enriching the variety of TIs have been actively investigated. Higher-order TIs are a new type of topological crystalline insulato…
cond-mat.str-el2017
Universal Relation among Many-Body Chern Number, Rotation Symmetry, and Filling
Akishi Matsugatani, Yuri Ishiguro, Ken Shiozaki +1
Understanding the interplay between the topological nature and the symmetry property of interacting systems has been a central matter of condensed matter physics in recent years. I…