Laser induced distortion of band structure in solids: an analytic model
Mesoscale and Nanoscale Physics
2019-05-07 v1 Quantum Physics
Abstract
We consider a spatially periodic (cosine) potential as a model for a crystalline solid that interacts with a harmonically oscillating external electric field. This problem is periodic both in space and time and can be solved analytically using the Kramers-Henneberger co-moving frame. By analyzing the stability of the closely related Mathieu-type differential equation, the electronic band structure can be obtained. We demonstrate that by changing the field intensity, the width of the zero-field band gaps can be drastically modified, including the special case when the external field causes the band gaps to disappear
Cite
@article{arxiv.1812.04676,
title = {Laser induced distortion of band structure in solids: an analytic model},
author = {Sándor Varró and Péter Földi and Imre Ferenc Barna},
journal= {arXiv preprint arXiv:1812.04676},
year = {2019}
}
Comments
8 pages, 3 figures