Giant Magneto-Piezoresistance and Internal Friction in a Two-Dimensional Electron System
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概要
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We use a micromechanical cantilever with an integrated two-dimensional electron system to show that an extremely small strain of the order of $10^{-4}$ induces a localized–delocalized electronic state transition. This strong strain effect improves the piezoresistive gauge factor by more than two orders of magnitude compared to the conventional Si cantilever. Furthermore, we found that the cantilever mechanical motion is affected considerably by friction exerted by the electron systems.
- 2007-07-25
著者
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YAMAGUCHI Hiroshi
NTT Basic Research Laboratories
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OKAMOTO Hajime
NTT Basic Research Laboratories
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MIYASHITA Sen
NTT Advanced Technology Corp.
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Hirayama Yoshiro
Ntt Basic Research Laboratories
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Ishihara Sunao
Department of Engineering Synthesis, School of Engineering, The University of Tokyo, Tokyo 113-8654, Japan
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Ishihara Sunao
Department of Engineering Synthesis, University of Tokyo, Bunkyo-ku, Tokyo 113-8656, Japan
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Maruta Yuki
NTT Basic Research Laboratories, NTT Corporation, Atsugi, Kanagawa 243-0198, Japan
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Miyashita Sen
NTT Advanced Technology, Atsugi, Kanagawa 243-0198, Japan
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