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LU, ZY; SU, ZB; YU, L; LU, ZY , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
HALDANE ENERGY-GAP OF A DOPED LINEAR-CHAIN HEISENBERG-ANTIFERROMAGNET
Source PublicationPHYSICAL REVIEW B
KeywordQuantum Spin Chains Bond Ground-states Models Field
AbstractUsing the valence-bond-solid (VBS) approach and the Schwinger-boson mean-field approximation, we study the dependence of the Haldane gap of a spin-1 linear-chain Heisenberg antiferromagnet on impurity doping with different spins. The impurity spins affect the singlet pairing order parameter DELTA and the constraint factor lambda. As a result, the Haldane gap is reduced by a factor is similar to n(i)2/3, with n(i) as the impurity concentration, and eventually collapses at n(i) is similar to 1/xi with xi as the VBS correlation length. This theoretical prediction can be verified by neutron-scattering experiments.
1993
ISSN0163-1829
Volume47Issue:18Pages:12276-12279
Subject AreaPhysics
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12039
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLU, ZY , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
Recommended Citation
GB/T 7714
LU, ZY,SU, ZB,YU, L,et al. HALDANE ENERGY-GAP OF A DOPED LINEAR-CHAIN HEISENBERG-ANTIFERROMAGNET[J]. PHYSICAL REVIEW B,1993,47(18):12276-12279.
APA LU, ZY,SU, ZB,YU, L,&LU, ZY , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1993).HALDANE ENERGY-GAP OF A DOPED LINEAR-CHAIN HEISENBERG-ANTIFERROMAGNET.PHYSICAL REVIEW B,47(18),12276-12279.
MLA LU, ZY,et al."HALDANE ENERGY-GAP OF A DOPED LINEAR-CHAIN HEISENBERG-ANTIFERROMAGNET".PHYSICAL REVIEW B 47.18(1993):12276-12279.
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