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arXiv · 1812.04676

Laser induced distortion of band structure in solids: an analytic model

Sándor Varró·Péter Földi·Imre Ferenc Barna
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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

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Sándor Varró, Péter Földi, Imre Ferenc Barna. 2018-12-11. Laser induced distortion of band structure in solids: an analytic model. https://doi.org/10.1088/1742-6596%2F1206%2F1%2F012005

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