Ratchet Effects Induced by Terahertz Radiation in Heterostructures with a Lateral Periodic Potential

被引：63

作者：

Olbrich, P. ^{[1
]}

Ivchenko, E. L. ^{[2
]}

Ravash, R. ^{[1
]}

Feil, T. ^{[1
]}

Danilov, S. D. ^{[1
]}

Allerdings, J. ^{[1
]}

Weiss, D. ^{[1
]}

Schuh, D. ^{[1
]}

Wegscheider, W. ^{[1
]}

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

机构：

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

[2] Russian Acad Sci, AF Ioffe Physicotech Inst, St Petersburg 194021, Russia

来源：

PHYSICAL REVIEW LETTERS | 2009年 / 103卷 / 09期

关键词：

BROWNIAN MOTORS;

D O I：

10.1103/PhysRevLett.103.090603

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on the observation of the Seebeck ratchet effect. The effect is measured in semiconductor heterostructures with a one-dimensional lateral potential excited by terahertz radiation. The photocurrent generation is based on the combined action of a spatially periodic in-plane potential and a spatially modulated light, which gives rise to a modulation of the local temperature. In addition to the polarization-independent current due to the Seebeck ratchet effect, we observe a photon helicity dependent response and propose a microscopic mechanism to interpret the experimental findings.

引用

页数：4

共 18 条

[1] CHEMICAL ETCHING CHARACTERISTICS OF (001)GAAS [J].

ADACHI, S ;

OE, K .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1983, 130 (12) :2427-2435

[2]

Baskin E. M., 1978, Soviet Physics - Solid State, V20, P1403

[3]

Belinicher V. I., 1980, Soviet Physics - Uspekhi, V23, P199, DOI 10.1070/PU1980v023n03ABEH004703

[4] Rectification of fluctuations in an underdamped ratchet [J].

Blanter, YM ;

Buttiker, M .

PHYSICAL REVIEW LETTERS, 1998, 81 (19) :4040-4043

[5]

BUTTIKER M, 1979, Z PHYS B, V35, P177, DOI DOI 10.1007/BF01321244

[6] Photogalvanic current in artificial asymmetric nanostructures [J].

Chepelianskii, A. D. ;

Entin, M. V. ;

Magarill, L. I. ;

Shepelyansky, D. L. .

EUROPEAN PHYSICAL JOURNAL B, 2007, 56 (04) :323-333

[7]

Ganichev S. D., 2006, INTENSE TERAHERTZ EX

[8] Conversion of spin into directed electric current in quantum wells [J].

Ganichev, SD ;

Ivchenko, EL ;

Danilov, SN ;

Eroms, J ;

Wegscheider, W ;

Weiss, D ;

Prettl, W .

PHYSICAL REVIEW LETTERS, 2001, 86 (19) :4358-4361

[9] Brownian motors [J].

Hänggi, P ;

Marchesoni, F ;

Nori, F .

ANNALEN DER PHYSIK, 2005, 14 (1-3) :51-70

[10]

Ivchenko E. L., 2005, OPTICAL SPECTROSCOPY

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