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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2008, Volume 87, Issue 10, Pages 638–641
(Mi jetpl117)
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This article is cited in 23 scientific papers (total in 23 papers)
CONDENSED MATTER
Microwave-induced magnetic field state with zero conductivity in GaAs/AlAs Corbino disks and hall bars
A. A. Bykov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract:
The microwave photoconductivity of the 2D electron gas in GaAs/AlAs heterostructures has been investigated at a temperature of 4.2 K in magnetic fields up to 1.5 T. It has been found that the magnetic field state with zero conductivity appears in GaAs/AlAs Corbino disks irradiated by 130.70-GHz microwave radiation. This state was previously observed only in GaAs/AlGaAs Corbino disks with much higher electron mobility and lower density. It has been shown that the microwave photoconductivity measured in high magnetic fields on Corbino disks can significantly differ from the value calculated from the results of the measurements on Hall bars. This difference is explained by the fact that the conditions of the appearing magnetoplasmons that affect the magnitude and character of the microwave photoconductivity (photoresistance) in the Corbino disks are nonequivalent to those in the Hall bars.
Received: 04.03.2008 Revised: 08.04.2007
Citation:
A. A. Bykov, “Microwave-induced magnetic field state with zero conductivity in GaAs/AlAs Corbino disks and hall bars”, Pis'ma v Zh. Èksper. Teoret. Fiz., 87:10 (2008), 638–641; JETP Letters, 87:10 (2008), 551–554
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https://www.mathnet.ru/eng/jetpl117 https://www.mathnet.ru/eng/jetpl/v87/i10/p638
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Abstract page: | 226 | Full-text PDF : | 82 | References: | 30 |
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