Photoinduced itinerant ferromagnetism in copper octacyanomolybdates

International Workshop on Itinerant-Electron Magnetism

Ohara, Jun^1 ; Yamamoto, Shoji^1

Department of Physics, Hokkaido University, Sapporo

060-0810, Japan^1

关键词: Angle resolved photoemission spectroscopy;    Charge-transfer gap;    Experimental investigations;    Extended Hubbard model;    Itinerant ferromagnetism;    Light irradiations;    Microscopic theory;    Optical conductivity spectra;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/868/1/012013/pdf
DOI  :  10.1088/1742-6596/868/1/012013

来源: IOP

【 摘 要 】

We make a microscopic theory of the photoswitchable magnetism in copper octacyanomolybdates. By numerically solving a time-dependent Schrödinger equation based on the relevant extended Hubbard model, we reproduce magnetization by green-light irradiation and subsequent demagnetization by orange-light irradiation. At the onset of the ferromagnetism, the charge-transfer gap disappears. In an attempt to stimulate experimental investigations, we simulate time evolution of the angle-resolved photoemission spectroscopy and optical-conductivity spectra.