Photoconductivity Response at Cyclotron-Resonance Harmonics in a Nondegenerate Two-Dimensional Electron Gas on Liquid Helium

被引：23
|
作者：
Yamashiro, R. [1 ]
Abdurakhimov, L. V. [1 ]
Badrutdinov, A. O. [1 ]
Monarkha, Yu. P. [2 ]
Konstantinov, D. [1 ]
机构：
[1] Okinawa Inst Sci & Technol, Okinawa 9040495, Japan
[2] Kharkov Low Temp Phys & Engn Inst, UA-61103 Kharkov, Ukraine
来源：
PHYSICAL REVIEW LETTERS | 2015年 / 115卷 / 25期
关键词：
MAGNETOCONDUCTIVITY OSCILLATIONS; RESISTANCE STATES; SYSTEMS; SURFACE; EXCITATION; TRANSPORT;
D O I：
10.1103/PhysRevLett.115.256802
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the first observation of an oscillatory photoconductivity response at the cyclotron-resonance harmonics in a nondegenerate 2D electron system formed on the free surface of liquid helium. The dc conductivity oscillations are detected for electrons occupying the ground surface subband. Their period is governed by the ratio of the microwave frequency to the cyclotron frequency. Theoretical analysis of the photoresponse in a strongly interacting electron system indicates that the observation can be explained by an oscillatory correction to the electron distribution function that appears for a large inelastic relaxation time because of photon-assisted scattering.
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页数：5
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