Non-Equilibrium Relaxation Study for Frustrated Spin System with Successive Phase Transitions : General Physics
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概要
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The non-equilibrium relaxation method (NER) is applied to a frustrated spin system with competitive interactions. The critical point and critical exponents are estimated accurately for the Blume-Emery-Grifliths model in three dimensions. It is applied to the region where successive transitions of PM-FM-PM-SQ phases occur; we denote paramagnetic (PM), ferromagnetic (FM) and staggered quadrupole (SQ) phases. With the analysis for relaxation of fluctuations, we can estimate various critical exponents. The result indicates that all transitions belong to the Ising universality class in three dimensions. It is found that the NER method is useful to analyze the critical phenomena for complex systems in which equilibrium simulation is even difficult.
- 社団法人日本物理学会の論文
- 2000-09-15
著者
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Ogawa Keita
Department Of Earth And Planetary Sciences Faculty Of Science Kyushu University
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Ogawa Keita
Department Of Physics Tokyo Institute Of Technology
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Ozeki Yukiyasu
Department Of Physics Tokyo Institute Of Technology
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Ozeki Yukiyasu
Department Of Applied Physics And Chemistry The University Of Electro-communications
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