Aging Phenomena in Ising Spin Glasses in Magnetic Field : Simulation and Experiment
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概要
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The aging phenomena in Ising spin glasses in a magnetic field are investigated both by the numerical simulation on three-dimensional Ising Edwards-Anderson model and by the experiment on the Fe_<0.55>Mn_<0.45>TiO_3 Ising spin glass. After reviewing our recent numerical work on the field-shift aging protocol, by which we argue that the spin-glass (SG) phase is unstable in a static magnetic field of any strength, we present the nonequilibrium aspects of the field-cooled magnetization in a relatively small field observed numerically and experimentally. The results are compatible with the absence of the equilibrium SG phase in a field.
- 理論物理学刊行会の論文
- 2005-04-30
著者
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Jonsson Petra
Institute For Solid State Physics University Of Tokyo
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Takayama Hajime
Institute For Solid State Physics The University Of Tokyo
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JONSSON Petra
Institute for Solid State Physics, University of Tokyo
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