Photocurrent Induced by a Bicircular Light Drive in Centrosymmetric Systems

被引：15

作者：

Ikeda, Yuya ^{[1
]}

Kitamura, Sota ^{[1
]}

Morimoto, Takahiro ^{[1
]}

机构：

[1] Univ Tokyo, Dept Appl Phys, Hongo, Tokyo 1138656, Japan

来源：

PHYSICAL REVIEW LETTERS | 2023年 / 131卷 / 09期

关键词：

TOPOLOGICAL DIRAC SEMIMETAL;

D O I：

10.1103/PhysRevLett.131.096301

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A bicircular light (BCL) consists of left and right circularly polarized lights with different frequencies, and draws a roselike pattern with a rotational symmetry determined by the ratio of the two frequencies. Here we show that an application of a BCL to centrosymmetric systems allows a photocurrent generation through introduction of an effective polarity to the system. We derive formulas for the BCL-induced photocurrent from a standard perturbation theory, which is then applied to a simple 1D model and 3D Dirac and Weyl semimetals. A nonperturbative effect with strong light intensity is also discussed with the Floquet technique.

引用

页数：6

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