Incommensurate Antiferromagnetism in the Extended t-J Model

Incommensurate Antiferromagnetism in the

Extended t-J Model

LIANG Ying;MA Tian-Xing;FENG Shi-Ping;CHEN Wei-Yeu

【期刊名称】《理论物理通讯（英文版）》 【年(卷),期】2002(038)011

【摘要】The effect of the extra second neighbor hopping t' on the incommensurate spin correlation in the t-J modelin the underdoped regime is studied within the fermion-spin theory. It is shown that although the extra second neighborhopping t' is systematically accompanied with the increasing of the weight of the incommensurate peaks in the dynamicalspin structure factor, for the physical reasonable small value of t' the qualitative behavior of the incommensurate spincorrelation in the t-t'-J model is the same as in the case of t-J model. 【总页数】4页(617-620)

【关键词】incommensurate antiferromagnetism;t-J model;fermion-spin theory

【作者】LIANG Ying;MA Tian-Xing;FENG Shi-Ping;CHEN Wei-Yeu

【作者单位】Department of Physics and Key Laboratory of Beam Technology and Material Modification, Beijing Normal University, Beijing 100875, China;National Laboratory of Superconductivity, Academia Sinica, Beijing 100080, China;Department of Physics and Key Laboratory of Beam Technology and Material Modification, Beijing Normal

University, Beijing 100875, China;National Laboratory of

Superconductivity, Academia Sinica, Beijing 100080, China;Department of Physics and Key Laboratory of Beam Technology and Material Modification, Beijing Normal University, Beijing 100875, China;National Laboratory of Superconductivity, Academia Sinica, Beijing 100080, China;Department of Physics, Tamkang University, Tamsui 25137, Taiwan 【正文语种】中文 【中图分类】O4 【相关文献】

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