Anomalous Size Dependence of Relaxation Time in the Fuzzy Spin Model : Mechanism of Slow Relaxation : Condensed Matter and Statistical Physics
スポンサーリンク
概要
- 論文の詳細を見る
Slow relaxation phenomena are studied in the Fuzzy Spin Model which is a random Ising ferromagnetic model with random spin length. The model is found to have many metastable states, which cause an anomalous relaxation. Distribution of the relaxation time to the ferromagnetic equilibrium state is investigated by the Monte Carlo method after quenching rapidly the system (the two-dimensional square lattice) from infinite temperature to temperatures below the critical point. Up to a certain size, linear dimension L≃20, the mean relaxation time increases exponentially with the size L as τ∝exp(aL)(a>0), which is understood to be due to a relaxation based on overturns of strongly coupled domains. Above L≃20, a different relaxation mechanism sets in, which shows a weaker size dependence. Mechanism of the size dependences of the relaxation is discussed in the viewpoint of distribution of the domains.
- 理論物理学刊行会の論文
- 1993-05-25
著者
-
川崎 辰夫
花園大文
-
Miyashita Seiji
Graduate School of Human and Environmental Studies
-
Miyashita S
Univ. Tokyo Tokyo Jpn
-
Miyashita Seiji
Department Of Physics University Of Tokyo
-
Miyashita Seiji
Graduate School Of Human And Environmental Studies Kyoto University
-
KAWASAKI Tatuo
Department of Fundamental Sciences, Faculty of Integrated Human Studies Kyoto University
-
MIYASHITA Seiji
Department of Applied Physics, School of Engineering, University of Tokyo
-
KAWASAKI Tatuo
Department of Physics, School of Liberal Arts and Sciences, Kyoto University
関連論文
- Generalized Wajnflasz Model for Charge Transfer Spin-Crossover Phenomena
- Quantum Tunneling in Half-Integer Spin Systems
- 29p-WG-8 物理教材のネットワーク化のサーバー構成
- 29p-WG-7 物理教材のネットワーク化
- Quantum Phase Transition of Two-Dimensional Diluted Heisenberg Antiferromagnet
- ワーキンググループの報告 : 新しい基礎物理教育のカリキュラムの検討 : 理工系(非生物系)学生対象の講義要目(大学における物理の基礎教育)
- Low Temperature Properties of Antiferromagnets on the Kagome Lattice
- Quantum Narrowing Effect in a Spin-Peierls System with Quantum Lattice Fluctuation
- Event-Based Computer Simulation Model of Aspect-Type Experiments Strictly Satisfying Einstein's Locality Conditions(General)
- Magnetic Properties and Metastable States in Spin-Crossover Transition of Co-Fe Prussian Blue Analogues(Condensed matter: structure and mechanical and thermal properties)
- Van der Waals-Navier Stokes Equation for Boiling Phenomena : Bubble Formation by Heating(General)
- Quantum-Fluctuation-Enhanced Ordered Phase in Blume-Capel Model(General)
- Structures of Metastable States in Phase Transitions with a High-Spin Low-Spin Degree of Freedom(Condensed Matter and Statistical Physics)
- Dynamical Properties of Temperature Chaos and Memory Effect
- Mechanisms of Magnetic Order in a Charge Transfer Complex Mediated by Virtual Interactions Due to the Charge Fluctuation (Statistical Physics of Quantum Systems--novel orders and dynamics)
- Nature of Ferrimagnetic Ground States in Quantum Spin Models (Statistical Physics of Quantum Systems--novel orders and dynamics)
- Directionally Independent Energy Gap Formation Due to the Hyperfine Interaction(Condensed Matter and Statistical Physics)
- Parity Effect in the Resonant Tunneling
- Frequency Dependence of Quantum Localization in Periodically Driven System
- Noise Effect on the Nonadiabatic Transition in the System of Fe_8
- Quantum Dynamics and Dissipation Effects in the Resonant Tunneling of Molecular Magnets
- Frequency Dependence of Electron Spin Resonance
- Physical Models for Quantum Computers
- Magnetic Foehn Effect in Adiabatic Transition
- Nonexponential Relaxation of Magnetization at the Resonant Tunneling Point under a Fluctuating Random Noise
- Magnetization Process of Nanoscale Iron Cluster
- Ground-State Phase Diagram of the Spin-1/2-1/2-1-1 Chain : Condensed Matter: Electronic Properties, etc.
- Ground-State and Thermodynamic Properties of the Quantum Mixed Spin-1/2-1/2-1-1 Chain
- Dynamics of the Density Matrix in Contact with a Thermal Bath and the Quantum Master Equation(General)
- Monte Carlo Simulation and Static and Dynamic Critical Behavior of the Plane Rotator Model
- Monte Carlo Simulation of Quantum Spin Systems. I
- New Method of Monte Carlo Simulations and Phenomenological Theory of Phase Transition in the Two-Dimensional XY-Model
- Relaxation Modes in Random Spin Systems
- Critical Line of Two-Dimensional Spin-1/2 Pair-Product Heisenberg Model : Progress Letters
- Thermodynamic Properties of Ising-Like Heisenberg Antiferromagnets with Anisotropic Coupling on the Hexagonal Lattice
- Metastable Behavior in Relaxation Process of XY Fuzzy Spin Model
- Anomalous Size Dependence of Relaxation Time in the Fuzzy Spin Model : Mechanism of Slow Relaxation : Condensed Matter and Statistical Physics
- Metastable States of the Fuzzy Spin Model. I : Static Structure : Condensed Matter and Statistical Physics
- Quantum Mechanical Transitions in a Dissipative Environment
- Exchange Amalgamation in Paramagnetic Resonance
- Critical Exponents of Ising-Like Heisenberg Antiferromagnets on the Hexagonal Lattice
- New Saturated Ferromagnetism in the Flat-Band Hubbard Model in High Electron Filling
- Relaxation Modes in the Two-Dimensional ±J Ising Spin Glass
- Monte Carlo Simulation of Quantum Heisenberg Magnets on the Triangular Lattice
- Low-Temperature Behaviors of Antiferromagnetic Ising Model of Infinite-Spin on Triangular Lattice
- Quantum Dynamics in Nanoscale Magnets in Dissipative Environments (Frontiers in Magnetism)
- Quantum Lattice Gas model on the Triangular Lattice : II. LOW TEMPERATURE PROPERTIES OF SOLIDS : Magnetism : Cluster, Low Dimension
- Frustration and Clusters in Spin Glasses : Study on the Low Temperature Phase of the ±J Model
- Relaxation of the Spin Autocorrelation Function in the Ising Spin Glass
- A Note on Orderings in Ferromagnetic Binary Alloys
- Critical Magnetic Relaxation : Quasi-Collective Mode and Dynamic Scaling
- Green's Function Theory of Magnetic Relaxation. IV : Critical Behaviour of Paramagnetic Resonance
- Interface Structure in a Magnetic Binary Alloy
- Low-and High-Temperature Behaviors of Ferromagnetic Ising Model of Infinite-Spin
- Structure of Ground States of Antiferromagnetic Ising Model with General-Spin on Triangular Lattice
- Dynamics of Solitons in an Easy-Plane Ferromagnetic Chain : A Discrete Lattice Model : Condensed Matter and Statistical Physics
- Uniform Susceptibility of an Anisotropic Binary Paramagnet
- Thermodynamic Properties of S=1 Antiferromagnetic Heisenberg Chains
- World-Line Monte Carlo Study of the Dispersion Relation of an S=1 Antiferromagnetic Heisenberg Chain
- Monte Carlo Simulation of the Plane Rotator Model.III : Renormalization Analyses around the Critical Point
- Transfer-Matrix Monte Carlo Method : A Practical Solution for the Negative Sign Problem
- A Modified Decoupled Cell Method of Quantum Monte Carlo Calculation : Condensed Matter and Statistical Physics
- Magnetization Process of the Spin-1/2 Antiferromagnetic Ising-Like Heisenberg Model on the Triangular Lattice
- A Self-Consistent Approach to Spin Systems : Dynamical Critical Phenomena
- Fluctuation-Dissipation Theorem for an Open System
- Dynamical Scaling in a Heisenberg Paramagnet with a Uniaxial Anisotropy
- Behavior of the Interface in a Magnetic Alloy
- A Green Function Theory of Antiferromagnetic Relaxation
- Effects of Magnetic Interactions on Phase Separation in Binary Alloys
- Structure of Metastable States of a Random Ising Ferromagnet
- Magnetic Effects on Spinodal Decomposition
- Numerical Study of Effects of Interchain Coupling on Soliton Propagation
- Monte Carlo Simulation of Nonlinear Stochastic Processes : Noise-Induced Long-Time Tail and Its Universality : Condensed Matter and Statistical Physics
- Monte Carlo Simulation of the Plane Rotator Model. II : Response to an External Field and Scaling Relations
- Theory of Nonlinear Susceptibility : A Diagrammatic Approach
- The Ground State and Thermodynamic Properties of Generalized Heisenberg Models on the Triangular Lattice
- Spin Correlation Functions on Frustrated Lattices
- Concentration Dependence of Modulated Phases in Diluted ANNNI Models : Monte Carlo Simulation : Condensed Matter and Statistical Physics
- Kinetic Behavior of a Double Ising System : Application to Phase Separation in Magnetic Binary Alloys
- Renormalization Group Approach to a Quenched, Diluted Spin System
- Dynamical Properties of Temperature Chaos and Memory Effect
- Time Evolution of a Magnetic Binary Alloy : Computer Simulation of a Two-Dimensional Model System