Unusually large enhancement of thermopower in an electric field induced two-dimensional electron gas

Hiromichi Ohta; Taku Mizuno; Shijian Zheng; Takeharu Kato; Yuichi Ikuhara; Katsumi Abe; Hideya Kumomi; Kenji Nomura; Hideo Hosono

doi:10.1002/adma.201103809

Unusually large enhancement of thermopower in an electric field induced two-dimensional electron gas

Hiromichi Ohta, Taku Mizuno, Shijian Zheng, Takeharu Kato, Yuichi Ikuhara, Katsumi Abe, Hideya Kumomi, Kenji Nomura, Hideo Hosono

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

78 Citations (Scopus)

Abstract

Unusually large thermopower modulation is demonstrated using a field effect transistor structure on a thermoelectric material. An electric field application provides an extremely thin (μ2 nm) two-dimensional electron gas (2DEG), which exhibits unusually large thermopower, approximately five times larger than that of the bulk. The present electric field induced 2DEG approach may accelerate the development of nanostructures for high performance thermoelectric materials.

Original language	English
Pages (from-to)	740-744
Number of pages	5
Journal	Advanced Materials
Volume	24
Issue number	6
DOIs	https://doi.org/10.1002/adma.201103809
Publication status	Published - 2012 Feb 7

Keywords

SrTiO
electric field modulation
thermopower
two-dimensional electron gas

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201103809

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abstract = "Unusually large thermopower modulation is demonstrated using a field effect transistor structure on a thermoelectric material. An electric field application provides an extremely thin (μ2 nm) two-dimensional electron gas (2DEG), which exhibits unusually large thermopower, approximately five times larger than that of the bulk. The present electric field induced 2DEG approach may accelerate the development of nanostructures for high performance thermoelectric materials.",

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AU - Ohta, Hiromichi

AU - Mizuno, Taku

AU - Zheng, Shijian

AU - Kato, Takeharu

AU - Ikuhara, Yuichi

AU - Abe, Katsumi

AU - Kumomi, Hideya

AU - Nomura, Kenji

AU - Hosono, Hideo

PY - 2012/2/7

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N2 - Unusually large thermopower modulation is demonstrated using a field effect transistor structure on a thermoelectric material. An electric field application provides an extremely thin (μ2 nm) two-dimensional electron gas (2DEG), which exhibits unusually large thermopower, approximately five times larger than that of the bulk. The present electric field induced 2DEG approach may accelerate the development of nanostructures for high performance thermoelectric materials.

AB - Unusually large thermopower modulation is demonstrated using a field effect transistor structure on a thermoelectric material. An electric field application provides an extremely thin (μ2 nm) two-dimensional electron gas (2DEG), which exhibits unusually large thermopower, approximately five times larger than that of the bulk. The present electric field induced 2DEG approach may accelerate the development of nanostructures for high performance thermoelectric materials.

KW - SrTiO

KW - electric field modulation

KW - thermopower

KW - two-dimensional electron gas

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Unusually large enhancement of thermopower in an electric field induced two-dimensional electron gas

Abstract

Keywords

ASJC Scopus subject areas

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