ITP OpenIR  > 理论物理所1978-2010年知识产出
EDGE STATES IN OPEN ANTIFERROMAGNETIC HEISENBERG-CHAINS
QIN, SJ; NG, TK; SU, ZB; QIN, SJ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
1995
发表期刊PHYSICAL REVIEW B
ISSN0163-1829
卷号52期号:17页码:12844-12848
摘要We report our results in investigating edge effects of open antiferromagnetic Heisenberg spin chains with spin magnitudes S = 1/2,1,3/2,2 using the density-matrix renormalization-group method initiated by White. For integer spin chains, we find that edge states with spin magnitude S-edge=S/2 exist, in agreement with the valence-bond-solid model picture. For half-integer spin chains, we find that no edge states exist for the S=1/2 spin chain, but an edge state exists in the S=3/2 spin chain with a S-edge=1/2, in agreement with a previous conjecture by Ng. The properties of the edge state in the S=3/2 chain is studied in detail. Strong finite-size effects associated with spin dimerization in half-integer spin chains are also discussed.
部门归属HONG KONG UNIV SCI & TECHNOL,DEPT PHYS,KOWLOON,HONG KONG
关键词Quantum Hall States Mean-field Theory Spin Chains Renormalization-groups Matrix Formulation Excitations
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/311006/12691
专题理论物理所1978-2010年知识产出
通讯作者QIN, SJ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA.
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QIN, SJ,NG, TK,SU, ZB,et al. EDGE STATES IN OPEN ANTIFERROMAGNETIC HEISENBERG-CHAINS[J]. PHYSICAL REVIEW B,1995,52(17):12844-12848.
APA QIN, SJ,NG, TK,SU, ZB,&QIN, SJ , ACAD SINICA,INST THEORET PHYS,POB 2735,BEIJING 100080,PEOPLES R CHINA..(1995).EDGE STATES IN OPEN ANTIFERROMAGNETIC HEISENBERG-CHAINS.PHYSICAL REVIEW B,52(17),12844-12848.
MLA QIN, SJ,et al."EDGE STATES IN OPEN ANTIFERROMAGNETIC HEISENBERG-CHAINS".PHYSICAL REVIEW B 52.17(1995):12844-12848.
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