Quantum Monte Carlo Simulations on S=1/2 antiferromagnetic-Ferromagnetic Random Alternating spin chain

2005/02/23 by Peng Zhang, Zhang, Peng, Zhaoxin Xu +6
Physics and Astronomy · #Disordered Systems and Neural Networks (cond-mat.dis-nn) #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Statistical Mechanics and Entropy #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.mtrl-sci

paper · pdf · doi:10.48550/arxiv.cond-mat/0502543

5 pages, 9 figures, paper submit to conference ""Non-Perturbative Quantum Field Theory: Lattice and Beyond", Guangzhou, P.R. China, Nov. 2004

arxiv created 2005/02/23 · openalex publication_date 2005/02/23 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

The S=1/2 Heisenberg chain with bond alternation and randomness of antiferromagnetic (AFM) and ferromagnetic (FM) interactions is investigated by quantum Monte Carlo simulations of loop/cluster algorithm. Our results have shown interesting finite temperature magnetic properties of this model. The relevance of our study to the observed results of the material (CH₃)₂CHNH₃Cu(Cl_xBr_1-x)₃ is discussed.

Related

• Quantum Monte Carlo Study of Random Antiferromagnetic Heisenberg Chain
• Finite temperature properties of alternating ferro-antiferromagnetic\n Heisenberg chains
• Randomness-driven Quantum Phase Transition in Bond-alternating Haldane Chain
• Dynamical structure factor of random antiferromagnetic Heisenberg spin chains
• Universality in the three-dimensional random bond quantum Heisenberg antiferromagnet