Work

Simultaneous transport coefficient measurements for an individual bismuth wire embedded in a quartz template applying nano-fabrication

Year: 2019

Type: article

Abstract: An individual bismuth wire (1.90 μ m in diameter and 1554 μ m in length) embedded in a quartz template was used to demonstrate simultaneous transport coefficient measurements for resistivity, magneto-resistivity, Hall coefficient, and Seebeck coefficient at 300 K. To obtain these measurements, we performed nano-fabrication using a dual-beam focused ion beam apparatus and fabricated local electrodes at the six-side and two-edge positions of the wire. Furthermore, using the measured values, we estimated carrier density, mobility, and Fermi energy. The obtained physical properties were similar to those of bulk bismuth, as expected, because of its large diameter.

Source: Applied Physics Express

DOI: 10.7567/1882-0786/aaf629

Authors: Hiroyuki Morita, Taichi Arisaka, Mioko Otsuka, Yasuhiro Hasegawa

Institutions: Saitama Prefectural Industrial Technology Center, Saitama University

Language: English

Topic: Advanced Thermoelectric Materials and Devices

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: Japanese Association of University Women, Japan Society for the Promotion of Science

Awards: １次元量子Ｂｉナノワイヤー熱電変換素子の巨大ゼーベック効果実証とその機構解明, Study for giant Seebeck coefficient using one-dimensional single crystam bismuth quantum nanoiwire by nano-fabrication, Transport phenomena in bismuth nanowires, Study of giant Seebeck coefficient by thermoelectric nanowire using nano-scale control