Nonlinear helicity anomalies in the cyclotron resonance photoresistance of two-dimensional electron systems

被引：0

作者：

Moench, E. ^{[1
]}

Schweiss, S. ^{[1
]}

Yahniuk, I. ^{[1
]}

Savchenko, M. L. ^{[2
]}

Dmitriev, I. A. ^{[1
]}

Shuvaev, A. ^{[2
]}

Pimenov, A. ^{[2
]}

Schuh, D. ^{[1
]}

Bougeard, D. ^{[1
]}

Ganichev, S. D. ^{[1
,3
]}

机构：

[1] Univ Regensburg, Terahertz Ctr, D-93040 Regensburg, Germany

[2] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[3] Warsaw Univ Technol, Ctr Adv Mat & Technol CEZAMAT, CENTERA LAB, PL-02822 Warsaw, Poland

来源：

PHYSICAL REVIEW RESEARCH | 2024年 / 6卷 / 02期

关键词：

MAGNETOTRANSPORT;

D O I：

10.1103/PhysRevResearch.6.023106

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Our studies of the cyclotron resonance (CR) photoresistance in GaAs-based two-dimensional electron systems (2DES) reveal an anomalously low sensitivity to the helicity of the incoming circularly polarized terahertz radiation. We find that this anomaly is strongly intensity dependent, and the ratio of the low-temperature photoresistance signals for the CR-active (CRA) and CR-inactive (CRI) polarities of magnetic field increases with lowering power, but, nevertheless, remains substantially lower than expected from conventional theory assuming interaction of the plane electromagnetic wave with the uniform 2DES. Our analysis shows that all data can be well described by the nonlinear CR-enhanced electron gas heating in both CRA and CRI regimes. This description, however, does not specify the source of anomalous CRI absorption that remains unclear.

引用

页数：16

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