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Spin and chirality orderings of the three-dimensional Heisenberg spin glass under magnetic fields are studied by large-scale equilibrium Monte Carlo simulations. It is found that the chiral-glass transition and the chiral-glass ordered…

无序系统与神经网络 · 物理学 2009-11-07 Daisuke Imagawa , Hikaru Kawamura

The ordering of the three-dimensional Heisenberg spin glass with the weak random anisotropy in magnetic fields is studied by extensive equilibrium Monte Carlo simulations. Both the spin and the chirality are monitored. We find strong…

无序系统与神经网络 · 物理学 2009-11-10 Daisuke Imagawa , Hikaru Kawamura

Recent studies on the spin and the chirality orderings of the three-dimensional Heisenberg spin glass and related systems are reviewed with particular emphasis on the possible spin-chirality decoupling phenomena. Chirality scenario of real…

无序系统与神经网络 · 物理学 2009-11-11 Hikaru Kawamura

Ordering of the three-dimensional Heisenberg spin glass with Gaussian coupling is studied by extensive Monte Carlo simulations. The model undergoes successive chiral-glass and spin-glass transitions at nonzero temperatures T_{CG} > T_{SG} >…

无序系统与神经网络 · 物理学 2012-01-27 Dao Xuan Viet , Hikaru Kawamura

The spin and the chirality orderings of the three-dimensional Heisenberg spin glass with the weak random anisotropy are studied under applied magnetic fields by equilibrium Monte Carlo simulations. A replica symmetry breaking transition…

无序系统与神经网络 · 物理学 2009-11-10 Daisuke Imagawa , Hikaru Kawamura

The nature of the ordering of the three-dimensional isotropic Heisenberg spin glass with nearest-neighbor random Gaussian coupling is studied by extensive Monte Carlo simulations. Several independent physical quantities are measured both…

无序系统与神经网络 · 物理学 2013-05-29 Dao Xuan Viet , Hikaru Kawamura

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…

无序系统与神经网络 · 物理学 2007-05-23 H. Kawamura , K. Hukushima

Spin-glass and chiral-glass orderings in three-dimensional Heisenberg spin glasses are studied with and without randaom magnetic anisotropy by dynamical Monte Carlo simulations. In isotropic case, clear evidence of a finite-temperature…

无序系统与神经网络 · 物理学 2009-10-31 Hikaru Kawamura

Ordering of the Heisenberg spin glass with the nearest-neighbor Gaussian coupling is investigated by equilibrium Monte Carlo simulations in four and five dimensions. Ordering of the mean-field Heisenberg spin-glass is also studied for…

无序系统与神经网络 · 物理学 2009-11-07 Daisuke Imagawa , Hikaru Kawamura

Detailed account is given of the chirality scenario of experimental spin-glass transitions. In this scenario, the spin glass order of weakly anisotropic Heisenberg-like spin-glass magnets including canonical spin glasses are essentially…

无序系统与神经网络 · 物理学 2015-05-13 Hikaru Kawamura

Ordering of the Heisenberg spin glass in four dimensions (4D) with the nearest-neighbor Gaussian coupling is investigated by equilibrium Monte Carlo simulations, with particular attention to its spin and chiral orderings. It is found that…

无序系统与神经网络 · 物理学 2015-08-18 Hikaru Kawamura , Shinichirou Nishikawa

Spin and chirality orderings of a three-dimensional XY spin glass are studied by extensive Monte Carlo simulations. By calculating an appropriately defined spin-overlap distribution function, we show that the finite-temperature chiral-glass…

无序系统与神经网络 · 物理学 2009-11-07 Hikaru Kawamura , Mai Suan Li

The ordering of the one-dimensional Heisenberg spin glass interacting via the long-range power-law interaction is studied by Monte Carlo simulations. Particular attention is paid to the possible occurrence of the ``spin-chirality…

无序系统与神经网络 · 物理学 2015-06-25 Akihiro Matsuda , Mitsuru Nakamura , Hikaru Kawamura

Extensive equilibrium Monte Carlo simulations are performed for a three-dimensional Heisenberg spin glass with the nearest-neighbor Gaussian coupling to investigate its spin-glass and chiral-glass orderings. The occurrence of a…

无序系统与神经网络 · 物理学 2009-10-31 K. Hukushima , H. Kawamura

Spin-glass and chiral-glass orderings in three-dimensional Heisenberg spin glasses are studied both by equilibrium and off-equilibrium Monte Carlo simulations. Fully isotropic model is found to exhibit a finite-temperature chiral-glass…

无序系统与神经网络 · 物理学 2009-10-31 H. Kawamura , K. Hukushima

The nature of the ordering of the one-dimensional Heisenberg spin-glass model with a long-range power-law interaction is studied by extensive Monte Carlo simulations, with particular attention to the issue of the spin-chirality…

无序系统与神经网络 · 物理学 2010-10-13 Dao Xuan Viet , Hikaru Kawamura

Spin-glass (SG) and chiral-glass (CG) orderings in three dimensional (3D) Heisenberg spin glass with and without magnetic anisotropy are studied by using large-scale off-equilibrium Monte Carlo simulations. A characteristic time of…

无序系统与神经网络 · 物理学 2016-08-31 Mitsuhiro Matsumoto , Koji Hukushima , Hajime Takayama

Ordering properties of XY-like spin-glass magnets with an easy-plane magnetic anisotropy are studied based on a symmetry consideration and the results of recent numerical simulations on the pure Heisenberg and XY spin-glass models. The…

无序系统与神经网络 · 物理学 2015-05-27 Hikaru Kawamura

Equilibrium properties of the three-dimensional isotropic Heisenberg spin glass are studied by extensive Monte Carlo simulations, with particular attention to the nature of its phase transition. A finite-size-scaling analysis is performed…

无序系统与神经网络 · 物理学 2013-05-29 K. Hukushima , H. Kawamura

``Chirality'' is a multispin quantity representing the sense or the handedness of the noncollinear spin structures induced by spin frustration. Recent studies have revealed that the chirality often plays an important role in the ordering of…

统计力学 · 物理学 2016-04-20 Hikaru Kawamura
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