scholarly journals Dynamical Simulation of Spin-Glass and Chiral-Glass Orderings in Three-Dimensional Heisenberg Spin Glasses

1998 ◽  
Vol 80 (24) ◽  
pp. 5421-5424 ◽  
Author(s):  
Hikaru Kawamura
Keyword(s):  
Spin Glass ◽  
Spin Glasses ◽  
Three Dimensional ◽  
Heisenberg Spin ◽  
Dynamical Simulation ◽  
Chiral Glass

scholarly journals DYNAMICAL ASPECTS OF EQUILIBRIUM AND OFF-EQUILIBRIUM SIMULATIONS OF A THREE-DIMENSIONAL HEISENBERG SPIN GLASS

1999 ◽  
Vol 10 (08) ◽  
pp. 1471-1481 ◽  
Author(s):  
H. KAWAMURA ◽  
K. HUKUSHIMA
Keyword(s):  
Glass Transition ◽  
Spin Glass ◽  
Mean Field ◽  
Three Dimensional ◽  
Aging Effect ◽  
Universality Class ◽  
Mean Field Model ◽  
Heisenberg Spin ◽  
The One ◽  
Chiral Glass

Spin-glass and chiral-glass orderings of a three-dimensional isotropic Heisenberg spin glass are studied both by equilibrium and off-equilibrium Monte Carlo simulations with emphasis on their dynamical aspects. The model is found to exhibit a finite-temperature chiral-glass transition without the conventional spin-glass order. Although chirality is an Ising-like quantity from symmetry, universality class of the chiral-glass transition appears to be different from that of the standard Ising spin glass. In the off-equilibrium simulation, while the spin autocorrelation exhibits only an interrupted aging, the chirality autocorrelation persists to exhibit a pronounced aging effect reminiscent of the one observered in the mean-field model.

CHIRAL ORDER IN SPIN GLASSES

1996 ◽  
Vol 07 (03) ◽  
pp. 345-353 ◽  
Author(s):  
HIKARU KAWAMURA
Keyword(s):  
Numerical Simulations ◽  
Spin Glass ◽  
Spin Glasses ◽  
Spin Rotation ◽  
Reflection Symmetry ◽  
The Novel ◽  
Glass Transitions ◽  
Rotation Symmetry ◽  
Numerical Evidence ◽  
Chiral Glass

The results of the recent numerical simulations on vector spin glasses are presented. Numerical evidence of the novel chiral-glass state, accompanied with broken spin-reflection symmetry with preserving spin-rotation symmetry, is presented. Implication to experiments on spin-glass transitions is discussed.

Progress in Spin Glasses and Random Fields – Research with a Special Purpose Computer

1985 ◽  
Vol 63 ◽  
Author(s):  
A. T. Ogielski
Keyword(s):  
Numerical Simulations ◽  
Spin Glass ◽  
Magnetic Materials ◽  
Random Fields ◽  
Spin Glasses ◽  
Three Dimensional ◽  
Purpose Computer ◽  
Special Purpose Computer

ABSTRACTExtensive numerical simulations of random magnetic materials have been recently performed at AT&T Bell Laboratories with a fast specially designed computer. I will discuss certain issues concerning the use of specialized computers in research, and I will review some major results obtained in simulations of a three-dimensional spin glass and an antiferromagnet with random fields.

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