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Kondo singlet state coexisting with antiferromagnetic long-range order: A possible ground state for Kondo insulators
Zhang, GM; Yu, L; Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.
2000
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号62期号:1页码:76-79
摘要The ground-state phase diagram of a half-filled anisotropic Kondo lattice model is calculated within a mean-field theory. For small transverse exchange coupling J(perpendicular to) < J(perpendicular to c1), the ground state shows an antiferromagnetic long-range order with finite staggered magnetizations of both localized spins and conduction electrons. When J(perpendicular to) > J(perpendicular to c2), the long-range order is destroyed and the system is in a disordered Kondo singlet state with a hybridization gap. Both ground states can describe the low-temperature phases of Kondo insulating compounds. Between these two distinct phases, there may be a coexistent regime as a result of the balance between local Kondo screening and magnetic interactions.
部门归属Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China; Int Ctr Theoret Phys, I-34100 Trieste, Italy; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Periodic Anderson Model Lattice Model Phase-diagram Dimensions
学科领域Physics
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收录类别SCI
WOS记录号WOS:000088037000020
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被引频次:40[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/12946
专题理论物理所1978-2010年知识产出
通讯作者Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.
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Zhang, GM,Yu, L,Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China.. Kondo singlet state coexisting with antiferromagnetic long-range order: A possible ground state for Kondo insulators[J]. PHYSICAL REVIEW B,2000,62(1):76-79.
APA Zhang, GM,Yu, L,&Zhang, GM , Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China..(2000).Kondo singlet state coexisting with antiferromagnetic long-range order: A possible ground state for Kondo insulators.PHYSICAL REVIEW B,62(1),76-79.
MLA Zhang, GM,et al."Kondo singlet state coexisting with antiferromagnetic long-range order: A possible ground state for Kondo insulators".PHYSICAL REVIEW B 62.1(2000):76-79.
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