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Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen K edge
https://repo.qst.go.jp/records/48715
https://repo.qst.go.jp/records/487159176df84-5875-4994-87ed-730ce3344f81
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2018-04-12 | |||||
| タイトル | ||||||
| タイトル | Observation of momentum-dependent charge excitations in hole-doped cuprates using resonant inelastic x-ray scattering at the oxygen K edge | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Ishii, Kenji
× Ishii, Kenji× Tohyama, Takami× Asano, Shun× Sato, Kentro× Fujita, Masaki× Wakimoto, Shuichi× Tustsui, Kenji× Sota, Shigetoshi× Miyawaki, Jun× Niwa, Hideharu× Harada, Yoshihisa× Pelliciari, Jonathan× Huang, Yaobo× Schmitt, Thorsten× Yamamoto, Yoshiya× Mizuki, Jun'ichiro× 石井 賢司× 筒井 健二× 水木 純一郎 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We investigate electronic excitations in La2−x (Br,Sr)x CuO4 using resonant inelastic x-ray scattering (RIXS) at the oxygen K edge. RIXS spectra of the hole-doped cuprates show clear momentum dependence below 1 eV. The broad spectral weight exhibits positive dispersion and shifts to higher energy with increasing hole concentration. Theoretical calculation of the dynamical charge structure factor on oxygen orbitals in a three-band Hubbard model is consistent with the experimental observation of the momentum and doping dependence, and therefore the momentum-dependent spectral weight is ascribed to intraband charge excitations which have been observed in electron-doped cuprates. Our results confirm that the momentum-dependent charge excitations exist on the order of the transfer energy (t), and the broad spectral line shape indicates damped and incoherent character of the charge excitations at the energy range in the doped Mott insulators. | |||||
| 書誌情報 |
Physical Review B 巻 96, 号 11, p. 115148-1-115148-8, 発行日 2017-09 |
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| 出版者 | ||||||
| 出版者 | Americal Physical Society | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 2469-9950 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1103/PhysRevB.96.115148 | |||||
| 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.96.115148 | |||||
| 関連名称 | https://journals.aps.org/prb/abstract/10.1103/PhysRevB.96.115148 | |||||
