WEKO3
アイテム
Magnetic response and quantum critical behavior in the doped two-leg extended Hubbard ladder
http://hdl.handle.net/2237/7132
http://hdl.handle.net/2237/7132fb8e523a-bef9-4b28-9fb2-9669008ae6c9
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
PhysRevB_72_075121.pdf (266.6 kB)
|
|
| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2006-11-29 | |||||
| タイトル | ||||||
| タイトル | Magnetic response and quantum critical behavior in the doped two-leg extended Hubbard ladder | |||||
| 言語 | en | |||||
| 著者 |
Tsuchiizu, M.
× Tsuchiizu, M.× Suzumura, Y. |
|||||
| アクセス権 | ||||||
| アクセス権 | open access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
| 権利 | ||||||
| 権利情報 | Copyright: American Physical Society, All rights reserved. | |||||
| 言語 | en | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | We have investigated quantum critical behavior in the doped two-leg extended Hubbard ladder, by using a weak-coupling bosonization method. In the ground state, the dominant fluctuation changes from the conventional d-wave-like superconducting (SCd) state into density-wave states, with increasing nearest-neighbor repulsions and/or decreasing doping rate. The competition between the SCd state and the charge-density-wave state coexisting with the p-density-wave state becomes noticeable on the critical point, at which the gap for magnetic excitations vanishes. Based on the Majorana-fermion description of the effective theory, we calculate the temperature dependence of the magnetic response such as the spin susceptibility and the NMR relaxation rate, which exhibit unusual properties due to two kinds of spin excitation modes. On the quantum critical point, the spin susceptibility shows paramagnetic behavior with logarithmic corrections and the NMR relaxation rate also exhibits anomalous power-law behavior. We discss the commensurability effect due to the umklapp scattering and relevance to the two-leg ladder compounds Sr_{14−x}Ca_xCu_24O_41. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | The American Physical Society | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | journal article | |||||
| 出版タイプ | ||||||
| 出版タイプ | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| DOI | ||||||
| 関連タイプ | isVersionOf | |||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1103/PhysRevB.72.075121 | |||||
| ISSN | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 1098-0121 | |||||
| 書誌情報 |
en : Physical Review B 巻 72, 号 7, p. 075121-075121, 発行日 2005-08-15 |
|||||
| フォーマット | ||||||
| 値 | application/pdf | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/7132 | |||||
| 識別子タイプ | HDL | |||||
