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  1. B100 理学部/理学研究科
  2. B100a 雑誌掲載論文
  3. 学術雑誌

Transport phenomena in a three-dimensional system close to the magnetic quantum critical point: The conserving approximation with current vertex corrections

http://hdl.handle.net/2237/7139
http://hdl.handle.net/2237/7139
535605f4-f608-43fc-8dd9-a39fe229c26d
名前 / ファイル ライセンス アクション
PhysRevB_73_224434.pdf PhysRevB_73_224434.pdf (468.0 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2006-11-30
タイトル
タイトル Transport phenomena in a three-dimensional system close to the magnetic quantum critical point: The conserving approximation with current vertex corrections
言語 en
著者 Onari, Seiichiro

× Onari, Seiichiro

WEKO 14346

en Onari, Seiichiro

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Kontani, Hiroshi

× Kontani, Hiroshi

WEKO 14347

en Kontani, Hiroshi

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Tanaka, Yukio

× Tanaka, Yukio

WEKO 14348

en Tanaka, Yukio

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アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 Copyright: American Physical Society, All rights reserved.
抄録
内容記述 It is known that various transport coefficients strongly deviate from conventional Fermi-liquid behaviors in many electron systems which are close to antiferromagnetic (AF) quantum critical points (QCP). For example, Hall coefficients and Nernst coefficients in three-dimensional heavy fermion CeCoIn_5 and CeCu_{6−x}Au_x increase strikingly at low temperatures, whose overall behaviors are similar to those in high-T_c cuprates. These temperature dependencies are too strong to explain in terms of the relaxation time approximation. To elucidate the origin of these anomalous transport phenomena in three-dimensional systems, we study the current vertex corrections (CVC) based on the fluctuation exchange approximation, and find out the decisive role of the CVC. The main finding of the present paper is that the Hall coefficient and the Nernst coefficient strongly increase thanks to the CVC in the vicinity of the AF QCP, irrespective of dimensionality. We also study the relaxation time of quasiparticles, and find that “hot points” and “cold lines” are formed in general three-dimensional systems due to strong AF fluctuations.
言語 en
内容記述タイプ Abstract
出版者
言語 en
出版者 The American Physical Society
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1103/PhysRevB.73.224434
ISSN
収録物識別子タイプ PISSN
収録物識別子 1098-0121
書誌情報 en : Physical Review B

巻 73, 号 22, p. 224434-224434, 発行日 2006-06-01
フォーマット
application/pdf
著者版フラグ
値 publisher
URI
識別子 http://hdl.handle.net/2237/7139
識別子タイプ HDL
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