Effect of Intersubband Impurity Scattering on the Anderson Localization in Two Dimensional Electron Systems
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概要
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Effect of intersubband impurity scattering on tlte Anderson localization is studiedin the weakly localized regime of two dimensional electron systems. It is shown that itchanges not only the prefactor of the quantum correction of conductivity, but alsothe diffusion constant, depending on the ratio of the intersubband scattering time tothe inelastic scattering time. The crossover behavior in magnetoconductivity fromone-subband occupation to tv,'o-subband occupation is also studied. Since it varies de-pending on various scattering times, details of scalxtering processes can be determinedfor an arbitrary electron density by fitting experimental observations to theoretical ex-pressions. Experimental determination of the inelastic scattering time without con-sidering this effect leads to an incorrect estimation.[twoscat- lj tering,con- f] ductivityldimensional electron system, subband structure, interstubband impurutyAnderson localization, quantum transport, quantum correctuon of, magnetoresistance, crossover of subband occupation, theory
- 社団法人日本物理学会の論文
- 1989-04-15
著者
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Nagaoka Yosuke
Department Of Physics Faculty Of Science University Of Nagoya
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Iwabuchi S
Department Of Physics Factually Of Science Nara Women's University
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Iwabuchi Shuichi
USLI Research Center,Toshiba Corporation
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IWABUCHI Shuichi
Institut fur Theoretische Physik, Freie Universitat Berlin
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