教師資料查詢 | 類別: 期刊論文 | 教師: 何昌明 CHANG-MING HO (瀏覽個人網頁)

標題:Low-Energy Spectra in t-J-Type Models at Low Doping Levels
學年
學期
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
語言英文
ISSN0031-9007;1079-7114
期刊性質國外
收錄於SCI
產學合作
通訊作者
審稿制度
國別美國
公開徵稿
出版型式紙本;電子版
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