| Low-Energy Spectra in t-J-Type Models at Low Doping Levels | |
|---|---|
| 學年 | 92 |
| 學期 | 1 |
| 出版（發表）日期 | 2003-08-01 |
| 作品名稱 | Low-Energy Spectra in t-J-Type Models at Low Doping Levels |
| 作品名稱（其他語言） | |
| 著者 | Lee, W. C.,; Lee, T. K.; Ho, Chang-ming; Leung, P. W. |
| 單位 | 淡江大學物理學系 |
| 出版者 | College Park: American Physical Society |
| 著錄名稱、卷期、頁數 | Physical Review Letters 91(5), pp.57001-57004 |
| 摘要 | Based on a variational approach, we propose that there are two kinds of low-energy states in the t-J-type models at low doping. In a quasiparticle state an unpaired spin bound to a hole with a well-defined momentum can be excited with spin waves. The resulting state shows a suppression of antiferromagnetic order around the hole with the profile of a spin bag. These spin-bag states with spin and charge or hole separated form a continuum of low-energy excitations. Very different properties predicted by these two kinds of states explain a number of anomalous results observed in the exact diagonalization studies on small clusters up to 32 sites. |
| 關鍵字 | |
| 語言 | en |
| ISSN | 0031-9007 1079-7114 |
| 期刊性質 | 國外 |
| 收錄於 | SCI |
| 產學合作 | |
| 通訊作者 | |
| 審稿制度 | |
| 國別 | USA |
| 公開徵稿 | |
| 出版型式 | 紙本 電子版 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/27870 ) |
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