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Ideal band shape in the potential thermoelectric material CuAlO2: Comparison to NaxCoO2
https://repository.lib.tottori-u.ac.jp/records/7328
https://repository.lib.tottori-u.ac.jp/records/7328b61ad36c-9314-4766-9c1b-21b4b86eba47
| 名前 / ファイル | ライセンス | アクション |
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prb88_075141.pdf (1.7 MB)
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| Item type | 学術雑誌論文 / Journal Article(1) | |||||||||||||
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| 公開日 | 2019-09-19 | |||||||||||||
| タイトル | ||||||||||||||
| 言語 | en | |||||||||||||
| タイトル | Ideal band shape in the potential thermoelectric material CuAlO2: Comparison to NaxCoO2 | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源タイプ | journal article | |||||||||||||
| 著者 |
Mori, Kouta
× Mori, Kouta
× Sakakibara, Hirofumi
× Usui, Hidetomo
× Kuroki, Kazuhiko
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| 著者所属（英） | ||||||||||||||
| en | ||||||||||||||
| Department of Engineering Science, The University of Electro-Communications / JST, ALCA | ||||||||||||||
| 著者所属（英） | ||||||||||||||
| en | ||||||||||||||
| Department of Engineering Science, The University of Electro-Communications | ||||||||||||||
| 著者所属（英） | ||||||||||||||
| en | ||||||||||||||
| Department of Engineering Science, The University of Electro-Communications / JST, ALCA | ||||||||||||||
| 著者所属（英） | ||||||||||||||
| en | ||||||||||||||
| Department of Physics, Osaka University | ||||||||||||||
| 抄録 | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | A potential thermoelectric material CuAlO2 is theoretically studied. We first construct a model Hamiltonian of CuAlO2 based on the first principles band calculation, and calculate the Seebeck coefficient. Then, we compare the model with that of a well-known thermoelectric material NaxCoO2, and discuss the similarities and the differences. It is found that the two materials are similar from an electronic structure viewpoint in that they have a peculiar pudding-mold type band shape, which is advantageous for thermoelectric materials. There are, however, some differences, and we analyze the origin of the difference from a microscopic viewpoint. The band shape (a very flat band top but with an overall wide bandwidth) of CuAlO2 is found to be even more ideal than that of NaxCoO2, and we predict that once a significant amount of holes is doped in CuAlO2, thermoelectric properties (especially the power factor) even better than those of NaxCoO2 can be expected. | |||||||||||||
| 書誌情報 |
Physical review. Third series. B, Condensed matter and materials physics en : Physical review. Third series. B, Condensed matter and materials physics 巻 88, p. 075141, 発行日 2013-08-26 |
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| 出版者 | ||||||||||||||
| 出版者 | American Physical Society | |||||||||||||
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| 収録物識別子タイプ | ISSN | |||||||||||||
| 収録物識別子 | 24699950 | |||||||||||||
| 書誌レコードID | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA11187113 | |||||||||||||
| DOI | ||||||||||||||
| 関連タイプ | isIdenticalTo | |||||||||||||
| 識別子タイプ | DOI | |||||||||||||
| 関連識別子 | 10.1103/PhysRevB.88.075141 | |||||||||||||
| 権利 | ||||||||||||||
| 権利情報 | ©2013 American Physical Society | |||||||||||||
| 情報源 | ||||||||||||||
| 関連名称 | K. Mori, H. Sakakibara, H. Usui and K. Kuroki. Ideal band shape in the potential thermoelectric material CuAlO2: Comparison to NaxCoO2. Physical review. Third series. B, Condensed matter and materials physics. 2013, 88, 075141 | |||||||||||||
| 関連サイト | ||||||||||||||
| 識別子タイプ | URI | |||||||||||||
| 関連識別子 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.075141 | |||||||||||||
| 関連名称 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.075141 | |||||||||||||
| 著者版フラグ | ||||||||||||||
| 出版タイプ | VoR | |||||||||||||
