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Heavy Fermions in the Periodic Anderson Model with Singlet-Triplet Crystal-Field Levels
http://hdl.handle.net/10191/26908
http://hdl.handle.net/10191/2690825356d4b-9770-4852-90e2-dfca5fab1d02
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
1009.pdf (87.8 kB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||
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| 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 | ||||||
| タイトル | Heavy Fermions in the Periodic Anderson Model with Singlet-Triplet Crystal-Field Levels | |||||
| 言語 | en | |||||
| 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.× 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 |
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| 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 | |||||
