Thermopower anisotropy of lightly-doped and optimally-doped Bi 2Sr2-xLaxCaCu2O 8+δ single crystals

T. Fujii; I. Terasaki; A. Matsuda

doi:10.1016/j.physc.2004.03.105

Thermopower anisotropy of lightly-doped and optimally-doped Bi ₂Sr_2-xLa_xCaCu₂O _8+δ single crystals

T. Fujii^*, I. Terasaki, A. Matsuda

^*この研究の対応する著者

研究成果: Conference article › 査読

2 被引用数 (Scopus)

抄録

In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi₂Sr _2-xLa_xCaCu₂O_8+δ single crystals. The anisotropy of the thermopower S_c/S_ab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.

本文言語	English
ページ（範囲）	674-676
ページ数	3
ジャーナル	Physica C: Superconductivity and its applications
巻	408-410
号	1-4
DOI	https://doi.org/10.1016/j.physc.2004.03.105
出版ステータス	Published - 2004 8 1
外部発表	はい
イベント	Proceedings of the International Conference on Materials - Rio de Janeiro, Brazil 継続期間: 2003 5 25 → 2003 5 30

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学
エネルギー工学および電力技術
電子工学および電気工学

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10.1016/j.physc.2004.03.105

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引用スタイル

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title = "Thermopower anisotropy of lightly-doped and optimally-doped Bi 2Sr2-xLaxCaCu2O 8+δ single crystals",

abstract = "In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi2Sr 2-xLaxCaCu2O8+δ single crystals. The anisotropy of the thermopower Sc/Sab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.",

keywords = "Anisotropy, Bi-2212, La substitution, Out-of-plane thermopower, Parent insulator",

author = "T. Fujii and I. Terasaki and A. Matsuda",

year = "2004",

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T1 - Thermopower anisotropy of lightly-doped and optimally-doped Bi 2Sr2-xLaxCaCu2O 8+δ single crystals

AU - Fujii, T.

AU - Terasaki, I.

AU - Matsuda, A.

PY - 2004/8/1

Y1 - 2004/8/1

N2 - In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi2Sr 2-xLaxCaCu2O8+δ single crystals. The anisotropy of the thermopower Sc/Sab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.

AB - In-plane and out-of-plane thermopowers have been measured for lightly-doped (insulating) and optimally-doped (superconducting) Bi2Sr 2-xLaxCaCu2O8+δ single crystals. The anisotropy of the thermopower Sc/Sab is very large in the superconducting samples, while it is close to unity in the insulating ones. The thermopower of the insulating samples increases in proportion to T, suggesting that the localized carriers around at (π/2,π/2) cause the variable range hopping transport.

KW - Anisotropy

KW - Bi-2212

KW - La substitution

KW - Out-of-plane thermopower

KW - Parent insulator

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