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このアイテムの引用には次の識別子を使用してください:
http://hdl.handle.net/10119/15357
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| タイトル: | Phonon dispersions and Fermi surfaces nesting explaining the variety of charge ordering in titanium-oxypnictides superconductors |
| 著者: | Nakano, Kousuke
Hongo, Kenta
Maezono, Ryo |
| キーワード: | Layered Titanium-Oxynictides
Phonon softening
Superstructures |
| 発行日: | 2016-07-19 |
| 出版者: | Springer Nature |
| 誌名: | Scientific Reports |
| 巻: | 6 |
| 開始ページ: | Article number: 29661 |
| DOI: | 10.1038/srep29661 |
| 抄録: | There has been a puzzle between experiments and theoretical predictions on the charge ordering of layered titanium-oxypnictides superconductors. Unconventional mechanisms to explain this discrepancy have been argued so far, even affecting the understanding of superconductivity on the compound. We provide a new theoretical prediction, by which the discrepancy itself is resolved without any complicated unconventional explanation. Phonon dispersions and changes of nesting vectors in Fermi surfaces are clarified to lead to the variety of superlattice structures even for the common crystal structures when without CDW, including orthorhombic 2 × 2 × 1 one for BaTi_2As_2O, which has not yet been explained successfully so far, being different from tetragonal √2× √2×1 for BaTi_2Sb_2O and BaTi_2Bi_2O. The electronic structure analysis can naturally explain experimental observations about CDW including most latest ones without any cramped unconventional mechanisms. |
| Rights: | Copyright (C) 2016 Authors. Kousuke Nakano, Kenta Hongo, and Ryo Maezono, Scientific Reports, 6, 2016, Article number: 29661. This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
| URI: | http://hdl.handle.net/10119/15357 |
| 資料タイプ: | publisher |
| 出現コレクション: | b10-1. 雑誌掲載論文 (Journal Articles)
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