Giant magneto-piezoresistance and internal friction in a two-dimensional electron system

Hiroshi Yamaguchi; Hajime Okamoto; Yuki Maruta; Sunao Ishihara; Sen Miyashita; Yoshiro Hirayama

doi:10.1143/JJAP.46.L658

Giant magneto-piezoresistance and internal friction in a two-dimensional electron system

Hiroshi Yamaguchi, Hajime Okamoto, Yuki Maruta, Sunao Ishihara, Sen Miyashita, Yoshiro Hirayama

Center for Science and Innovation in Spintronics (CSIS)

Research output: Contribution to journal › Article › peer-review

5 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	L658-L660
Journal	Japanese Journal of Applied Physics, Part 2: Letters
Volume	46
Issue number	25-28
DOIs	https://doi.org/10.1143/JJAP.46.L658
Publication status	Published - 2007 Jul 13

Keywords

2DES
Cantilever
GaAs
MEMS
Piezoresistance

ASJC Scopus subject areas

Engineering(all)
Physics and Astronomy(all)

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10.1143/JJAP.46.L658

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abstract = "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.",

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AU - Yamaguchi, Hiroshi

AU - Okamoto, Hajime

AU - Maruta, Yuki

AU - Ishihara, Sunao

AU - Miyashita, Sen

AU - Hirayama, Yoshiro

PY - 2007/7/13

Y1 - 2007/7/13

N2 - 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.

AB - 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.

KW - 2DES

KW - Cantilever

KW - GaAs

KW - MEMS

KW - Piezoresistance

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ER -

Giant magneto-piezoresistance and internal friction in a two-dimensional electron system

Abstract

Keywords

ASJC Scopus subject areas

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