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Relationship between the Electronic Polarization and the Winding Number in Non-Hermitian Systems
Shohei Masuda, Masaaki Nakamura
We discuss an extension of the Resta's electronic polarization to non-Hermitian systems with periodic boundary conditions. We introduce the ``electronic polarization'' as an expect…
Characterization of topological insulators based on the electronic polarization with spiral boundary conditions
Masaaki Nakamura, Shohei Masuda, Satoshi Nishimoto
We introduce the electronic polarization originally defined in one-dimensional lattice systems to characterize two-dimensional topological insulators. The main idea is to use spira…
Stereodynamics Imaging of Bromine Atomic Photofragments Eliminated from 1-Bromo-2-methylbutane Oriented via Hexapole State Selector
Masaaki Nakamura, Hsiu-Pu Chang, King-Chuen Lin +4
Both single-laser and two-laser experiments were conducted to look into the ion-imaging of Br*(2P1/2) and Br(2P3/2) photo-fragmented from 1-bromo-2-methylbutane in the range 232-24…