Transfer-matrix renormalization group study of spin ladders with cyclic four-spin interactions
نویسندگان
چکیده
منابع مشابه
Weakly disordered spin ladders
We analyze an anisotropic spin 1/2 two legs ladder in the presence of various type of random perturbations. The generic phase diagram for the pure system, in a way similar to spin one chains, consists of four phases: an Antiferromagnet, a Haldane gap or a Singlet phase (depending on the sign of interchain coupling) and two XY phases designated by XY1 and XY2. The effects of disorder depend cruc...
متن کاملPhase Transitions with Four-Spin Interactions
Using an extended Lee-Yang theorem and GKS correlation inequalities, we prove, for a class of ferromagnetic multi-spin interactions, that they will have a phase transition (and spontaneous magnetization) if, and only if, the external field h = 0 (and the temperature is low enough). We also show the absence of phase transitions for some nonferromagnetic interactions. The FKG inequalities are sho...
متن کاملPhase diagram of the anisotropic spin-2 XXZ model: Infinite-system density matrix renormalization group study
Jonas A. Kjäll,1,2 Michael P. Zaletel,1 Roger S. K. Mong,1,3 Jens H. Bardarson,1,4 and Frank Pollmann2 1Department of Physics, University of California, Berkeley, California 94720, USA 2Max-Planck-Institut für Physik komplexer Systeme, 01187 Dresden, Germany 3Department of Physics, California Institute of Technology, Pasadena, California 91125, USA 4Materials Sciences Division, Lawrence Berkele...
متن کاملRenormalization group approach to spin glass systems
A renormalization group transformation suitable for spin glass models and, more generally, for disordered models, is presented. The procedure is non-standard in both the nature of the additional interactions and the coarse graining transformation, that is performed on the overlap probability measure. Universality classes are thus naturally defined on a large set of models, going from Z 2 and Ga...
متن کاملQuantum Phase Transitions and Matrix Product States in Spin Ladders
X iv :q ua nt -p h/ 06 12 20 7v 1 2 5 D ec 2 00 6 Quantum Phase Transitions and Matrix Product States in Spin Ladders M. Asoudeh,∗ V. Karimipour†,‡ and A. Sadrolashrafi§ Department of Physics, Sharif University of Technology, P.O. Box 11365-9161, Tehran, Iran (Dated: December 28, 2006) Abstract We investigate quantum phase transitions in ladders of spin 1/2 particles by engineering suitable mat...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2006
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.74.224447