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JOURNALS // Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki // Archive

Pis'ma v Zh. Èksper. Teoret. Fiz., 2013 Volume 98, Issue 12, Pages 919–925 (Mi jetpl3615)

This article is cited in 6 papers

CONDENSED MATTER

Photogalvanic current in electron gas over a liquid helium surface

M. V. Èntina, L. I. Magarillab

a Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
b Novosibirsk State University

Abstract: We study the stationary surface photocurrent in 2D electron gas near the helium surface. Electron gas is assumed to be attracted to the helium surface due to the image attracting force and an external stationary electric field. The alternating electric field has both vertical and in-plane components. The photogalvanic effect originates from the periodic transitions of electrons between quantum subbands in the vertical direction caused by a normal component of the alternating electric field accompanied by synchronous in-plane acceleration/deceleration due to the electric field in-plane component. The effect needs vertical asymmetry of the system. The problem is considered taking into account a friction caused by the electron-ripplon interaction. The photocurrent resonantly depends on the field frequency. The resonance occurs at field frequencies close to the distance between well subbands. The resonance is symmetric or antisymmetric depending on the kind (linear or circular) of polarization.

Received: 06.11.2013

Language: English

DOI: 10.7868/S0370274X13240120


 English version:
Journal of Experimental and Theoretical Physics Letters, 2013, 98:12, 816–822

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