NDLI: Enhancement of Seebeck Coefficient in Bi Nanowires by Electric Field Effect

Content Provider	Springer Nature Link
Author	Komine, Takashi Ao, Tomosuke Nabatame, Yuta Murata, Masayuki Hasegawa, Yasuhiro
Copyright Year	2015
Abstract	In this study, we investigated the electric field effect on the transport properties of a Bi nanowire. These effects were modeled by a surface potential. The electron states of Bi nanowires were numerically analyzed by effective mass equations at the T-point and L-point taking into account surface potential due to an external electric field. The Seebeck coefficients of Bi nanowires were calculated by using the Boltzmann equation with a constant relaxation time. It was found that the Seebeck coefficients increased when the sign of the surface potential parameter was negative. In particular, when the surface potential parameter was $$-$$ 1 eV and the skin depth was 10 nm in a 20-nm-diameter nanowire, the maximum absolute value of the Seebeck coefficient was larger than 1 mV/K, which was greatly improved compared to that without an external electric field.
Starting Page	1555
Ending Page	1560
Page Count	6
File Format	PDF
ISSN	03615235
Journal	Journal of Electronic Materials
Volume Number	45
Issue Number	3
e-ISSN	1543186X
Language	English
Publisher	Springer US
Publisher Date	2015-10-20
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Transport properties Bi nanowire electric field effect surface potential Optical and Electronic Materials Characterization and Evaluation of Materials Electronics and Microelectronics, Instrumentation Solid State Physics
Content Type	Text
Resource Type	Article
Subject	Materials Chemistry Electronic, Optical and Magnetic Materials Condensed Matter Physics Electrical and Electronic Engineering

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