Optical properties of helical edge channels in zinc-blende-type topological insulators: selection rules, circular and linear dichroism, circular and linear photocurrents

被引：11

作者：

Durnev, M., V ^{[1
]}

Tarasenko, S. A. ^{[1
]}

机构：

[1] Ioffe Inst, St Petersburg 194021, Russia

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2019年 / 31卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

topological insulators; edge photogalvanic effect; dichroism; HgTe quantum well; QUANTUM; TRANSPORT;

D O I：

10.1088/1361-648X/aaf024

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We develop a theory of electron-photon interaction for helical edge channels in two-dimensional topological insulators based on zinc-blende-type quantum wells. It is shown that the lack of space inversion symmetry in such structures enables the electro-dipole optical transitions between the spin branches of the topological edge states. Further, we demonstrate the linear and circular dichroism associated with the edge states and the generation of edge photocurrents controlled by radiation polarization.

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页数：10

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