2001/03/18 by Yasuhiro Hieida, Kouichi Okunishi, Yasuhiro Akutsu · 4 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.64.224422
6 pages(including 7 figs), REVTeX(using epsfig.sty), submitted to Phys. Rev. B
arxiv created 2001/03/18 · openalex publication_date 2001/11/21 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We investigate one-dimensional S=1/2 and S=1 antiferromagnetic quantum-spin chains with easy-axis anisotropies in a transverse field. We calculate both the uniform magnetization and the staggered magnetization, using a variant of the density-matrix renormalization-group method. We find that the staggered magnetizations exhibit reentrant behavior as functions of the transverse field, where the competition between the classical N'eel order and the quantum fluctuations plays an important role. We also discuss the critical behavior associated with the staggered magnetizations.