Nonequilibrium dynamics in two-dimensional Ising spin glass

doi:10.1088/1674-1056/20/4/047501

中国物理B ›› 2011, Vol. 20 ›› Issue (4): 47501-047501.doi: 10.1088/1674-1056/20/4/047501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇下一篇

Nonequilibrium dynamics in two-dimensional Ising spin glass

张开成¹, 朱岩²

(1)Department of Physics, Bohai University, Jinzhou 121013, Liaoning Province, China; (2)Department of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

收稿日期:2010-07-29 修回日期:2010-10-24 出版日期:2011-04-15 发布日期:2011-04-15

Nonequilibrium dynamics in two-dimensional Ising spin glass

Zhang Kai-Cheng(张开成)^a)^† and Zhu Yan(朱岩)^b)

^a Department of Physics, Bohai University, Jinzhou 121013, Liaoning Province, China; ^b Department of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received:2010-07-29 Revised:2010-10-24 Online:2011-04-15 Published:2011-04-15

摘要/Abstract

摘要： This paper investigates the nonequilibrium dynamics of two-dimensional Ising spin glass by dynamical Monte Carlo simulations. A new method is developed to quantitatively measure the age of domain growth. Using this method it investigates how temperature shift affects the effective age of domain growth. It finds that the T-shift dependence of the effective age follows the prediction of the droplet model quite well. It also investigates the overlap length between the spin glass states as well as the correlated flips of spins, which are not consistent with the theoretical predictions. The possible reasons are discussed.

Abstract: This paper investigates the nonequilibrium dynamics of two-dimensional Ising spin glass by dynamical Monte Carlo simulations. A new method is developed to quantitatively measure the age of domain growth. Using this method it investigates how temperature shift affects the effective age of domain growth. It finds that the T-shift dependence of the effective age follows the prediction of the droplet model quite well. It also investigates the overlap length between the spin glass states as well as the correlated flips of spins, which are not consistent with the theoretical predictions. The possible reasons are discussed.

Key words: nonequilibrium, effective age, site-overlap, droplet model

中图分类号: (Classical spin models)

75.10.Hk

75.90.+w (Other topics in magnetic properties and materials)

张开成, 朱岩. Nonequilibrium dynamics in two-dimensional Ising spin glass[J]. 中国物理B, 2011, 20(4): 47501-047501.

Zhang Kai-Cheng(张开成) and Zhu Yan(朱岩). Nonequilibrium dynamics in two-dimensional Ising spin glass[J]. Chin. Phys. B, 2011, 20(4): 47501-047501.

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Nonequilibrium dynamics in two-dimensional Ising spin glass

Nonequilibrium dynamics in two-dimensional Ising spin glass

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