This article is cited in 5 papers

CONDENSED MATTER

Microwave response of a ballistic quantum dot

Z. D. Kvon^ab, G. M. Gusev^c, A. D. Levin^c, D. A. Kozlov^b, E. E. Podyakina^b, A. V. Latyshev<sup>b

a</sup> Novosibirsk State University
^b Rzhanov Institute of Semiconductor Physics, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^c Universidade de São Paulo, Instituto de Física Teórica

Abstract: The microwave response (photovoltage and photoconductance) of a lateral ballistic quantum dot made of a high-mobility two-dimensional electron gas in an AlGaAs/GaAs heterojunction has been studied experimentally in the frequency range of $110$–$170$ GHz. It has been found that the asymmetry of the photovoltage with respect to the sign of the magnetic field has mesoscopic character and depends on both the magnetic field and the microwave power. This indicates the violation of the Onsager reciprocity relations regarding the electron-electron interactions in the mesoscopic photovoltaic effect. A strong increase in the conductance of the quantum dot induced by the microwave radiation and unrelated to heating, as well as the microwave-induced magneto-oscillations, has been discovered.

Received: 30.10.2013

DOI: 10.7868/S0370274X13230148

 English version: Journal of Experimental and Theoretical Physics Letters, 2013, 98:11, 713–716

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