2 papers
cond-mat.mes-hall2018
Axion instability and non-linear electromagnetic effect
Tatsushi Imaeda, Yuki Kawaguchi, Yukio Tanaka +1
We investigate the instability due to dynamical axion field near the topological phase transition of insulators. We first point out that the amplitude of dynamical axion field is b…
cond-mat.mes-hall2018
Electromagnetic effects induced by time-dependent axion field
Katsuhisa Taguchi, Tatsushi Imaeda, Tetsuya Hajiri +4
We studied the dynamics of the so-called -term, which exists in topological materials and is related to a hypothetical field predicted by Peccei-Quinn in particle physics, in a…