Local magnetic structure due to inhomogeneity of interaction inS=12antiferromagnetic chains

1999/06/29 by Masamichi Nishino, Hiroaki Onishi, Pascal Roos +2 · 3 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Physics of Superconductivity and Magnetism #Theoretical and Computational Physics #cond-mat.stat-mech

paper · pdf · doi:10.1103/physrevb.61.4033

15pages, 34figures

arxiv created 1999/06/29 · openalex publication_date 2000/02/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We study the magnetic properties of S=1/2 antiferromagnetic Heisenberg chains with inhomogeneity of interaction. Using a quantum Monte Carlo method and an exact diagonalization method, we study the bond-impurity effect in the uniform S=1/2 chain. Here ``bond impurity'' means a bond with a strength different from those in the bulk. In particular, by calculating the local magnetization, the local susceptibility, and the local field susceptibility, the temperature dependence of local magnetic structures induced by bond impurities is investigated. We also investigate the force acting between bond impurities and find that the force is attractive.

Citations

• Energy Versus Magnetic-Field Diagram of the Spin-1 Haldane System with an Impurity
• Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma model

Cited by

• Impurity effects at finite temperature in the two-dimensionalS=1∕2Heisenberg antiferromagnet
• Possible localized modes in the uniform quantum Heisenberg chains ofSr2CuO3
• Spin- and charge-density oscillations in spin chains and quantum wires