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  1. 050 理学部
  2. 10 学術雑誌論文
  3. 10 査読済論文
  1. 0 資料タイプ別
  2. 01 学術雑誌論文

Heavy Fermions in the Periodic Anderson Model with Singlet-Triplet Crystal-Field Levels

http://hdl.handle.net/10191/26908
http://hdl.handle.net/10191/26908
25356d4b-9770-4852-90e2-dfca5fab1d02
名前 / ファイル ライセンス アクション
1009.pdf 1009.pdf (87.8 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2014-04-16
タイトル
タイトル Heavy Fermions in the Periodic Anderson Model with Singlet-Triplet Crystal-Field Levels
タイトル
言語 en
タイトル Heavy Fermions in the Periodic Anderson Model with Singlet-Triplet Crystal-Field Levels
言語
言語 eng
キーワード
主題Scheme Other
主題 Filled skutterudite
キーワード
主題Scheme Other
主題 Heavy fermion
キーワード
主題Scheme Other
主題 Periodic Anderson model
キーワード
主題Scheme Other
主題 Crystal-field splitting
資源タイプ
資源 http://purl.org/coar/resource_type/c_6501
タイプ journal article
著者 Ono, Y.

× Ono, Y.

WEKO 62

Ono, Y.

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Mitsumoto, K.

× Mitsumoto, K.

WEKO 7651

Mitsumoto, K.

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抄録
内容記述タイプ Abstract
内容記述 We investigate the two-orbital periodic Anderson model with f2-configuration by using the dynamical mean-field theory in which the effective impurity Anderson model is solved using the exact diagonalization method. The renormalization factor Z and the local moment 〈S2〉 are obtained as functions of the Coulomb interaction U, the exchange (Hund's rule) coupling J and the crystal-field splitting Δ. When the ionic ground state is triplet for Δ<Δc=3J, the heavy fermion state with the mass enhancement m*/m=Z-1≳100 together with 〈S2〉~2 is realized in the strong correlation regime for U≳W, where W is the conduction bandwidth. When the ionic ground state is singlet for Δ>Δc, m*/m~1 and 〈S2〉~0 for any value of U. When the singlet ground state and the triplet excited state form a quasi-quartet for Δ≳Δc, the system shows a moderate mass enhancement m*/m~10–100.
書誌情報 Physica. B, Condensed matter
en : Physica. B, Condensed matter

巻 378-380, p. 694-695, 発行日 2006-05
出版者
出版者 Elsevier
ISSN
収録物識別子タイプ ISSN
収録物識別子 09214526
書誌レコードID
収録物識別子タイプ NCID
収録物識別子 AA10673546
DOI
識別子タイプ DOI
関連識別子 info:doi/10.1016/j.physb.2006.01.224
著者版フラグ
値 author
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