2 papers
cond-mat.supr-con2021
Berry connection from many-body wave functions and superconductivity: Calculations by the particle number conserving Bogoliubov-de Gennes equations
Hiroyasu Koizumi, Alto Ishikawa
A fundamentally revised version of superconductivity theory has been put forward by the present authors since the standard theory of superconductivity based on the BCS theory canno…
cond-mat.supr-con2020
Theory of Supercurrent in Superconductors
Hiroyasu Koizumi, Alto Ishikawa
In the standard theory of superconductivity, the origin of superconductivity is the electron-pairing. The induced current by a magnetic field is calculated by the linear response t…