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LU, ZY; SU, ZB; YU, L
DOPING EFFECT ON SPIN-PEIERLS INSTABILITY
Source PublicationPHYSICAL REVIEW LETTERS
KeywordHeisenberg Antiferromagnet Polyacetylene Transition Solitons Chains State
AbstractWe 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.
1994
ISSN0031-9007
Volume72Issue:8Pages:1276-1279
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/11951
Collection理论物理所科研产出_SCI论文
Recommended Citation
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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