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题名: DOPING EFFECT ON SPIN-PEIERLS INSTABILITY
作者: LU, ZY ;  SU, ZB ;  YU, L
刊名: PHYSICAL REVIEW LETTERS
出版日期: 1994
卷号: 72, 期号:8, 页码:1276-1279
关键词: HEISENBERG ;  ANTIFERROMAGNET ;  POLYACETYLENE ;  TRANSITION ;  SOLITONS ;  CHAINS ;  STATE
学科分类: Physics
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
英文摘要: We study the effects of doping on spin-Peierls (SP) systems using the unimodular mean-field theory. The impurity spins affect the singlet valence bond field and renormalize the magnetic excitations. The SP transition temperature and the energy gap of magnetic excitations are reduced by factors similar to n(i) and similar to n(i)(2/3), respectively, with n(i) as the impurity density. At a certain value of n(i), a gapless SP phase occurs, and the interaction between impurities becomes RKKY-like. The recently observed reduction of SP transition temperature upon doping and occurrence of a spin glass phase is interpreted using the proposed theory.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/11951
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
LU, ZY,SU, ZB,YU, L. DOPING EFFECT ON SPIN-PEIERLS INSTABILITY[J]. PHYSICAL REVIEW LETTERS,1994,72(8):1276-1279.
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