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DOPING EFFECT ON SPIN-PEIERLS INSTABILITY
LU, ZY; SU, ZB; YU, L
1994
发表期刊PHYSICAL REVIEW LETTERS
ISSN0031-9007
卷号72期号:8页码:1276-1279
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.
部门归属ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; INT CTR THEORET PHYS,I-34100 TRIESTE,ITALY
关键词Heisenberg Antiferromagnet Polyacetylene Transition Solitons Chains State
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11951
专题理论物理所SCI论文
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GB/T 7714
LU, ZY,SU, ZB,YU, L. DOPING EFFECT ON SPIN-PEIERLS INSTABILITY[J]. PHYSICAL REVIEW LETTERS,1994,72(8):1276-1279.
APA LU, ZY,SU, ZB,&YU, L.(1994).DOPING EFFECT ON SPIN-PEIERLS INSTABILITY.PHYSICAL REVIEW LETTERS,72(8),1276-1279.
MLA LU, ZY,et al."DOPING EFFECT ON SPIN-PEIERLS INSTABILITY".PHYSICAL REVIEW LETTERS 72.8(1994):1276-1279.
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