中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Kondo spin liquid and magnetically long-range ordered states in the Kondo necklace model

文献类型:期刊论文

作者Zhang, GM; Gu, Q; Yu, L; Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.
刊名PHYSICAL REVIEW B
出版日期2000
卷号62期号:1页码:69-72
关键词Periodic Anderson Model Lattice Model One Dimension Ground-state
ISSN号0163-1829
英文摘要A simplified version of the symmetric Kondo lattice model, the Kondo necklace model, is studied by using a representation of impurity and conduction electron spins in terms of local Kondo singlet and triplet operators. Within a mean-field theory, a spin gap always appears in the spin triplet excitation spectrum in one dimension (1D), leading to a Kondo spin liquid state for any finite values of coupling strength t/J (with t as hopping and J as exchange); in 2D and 3D cubic lattices the spin gaps are found to Vanish continuously around (t/J)(c)approximate to 0.70 and (t/J)(c)approximate to 0.38, respectively, where quantum phase transitions occur and the Kondo spin liquid state changes into an antiferromagnetically long-range ordered state. These results are in agreement with variational Monte Carlo, higher-order series expansion, and recent quantum Monte Carlo calculations for the symmetric Kondo lattice model.
学科主题Physics
URL标识查看原文
WOS记录号WOS:000088037000018
公开日期2012-08-29
源URL[http://ir.itp.ac.cn/handle/311006/12945]  
专题理论物理研究所_理论物理所1978-2010年知识产出
通讯作者Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.
推荐引用方式
GB/T 7714
Zhang, GM,Gu, Q,Yu, L,et al. Kondo spin liquid and magnetically long-range ordered states in the Kondo necklace model[J]. PHYSICAL REVIEW B,2000,62(1):69-72.
APA Zhang, GM,Gu, Q,Yu, L,&Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China..(2000).Kondo spin liquid and magnetically long-range ordered states in the Kondo necklace model.PHYSICAL REVIEW B,62(1),69-72.
MLA Zhang, GM,et al."Kondo spin liquid and magnetically long-range ordered states in the Kondo necklace model".PHYSICAL REVIEW B 62.1(2000):69-72.

入库方式: OAI收割

来源:理论物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。