Bond-Dilution-Induced Quantum Phase Transitions in Heisenberg Antiferromagnets(Condensed matter: electronic structure and electrical, magnetic, and optical properties)

スポンサーリンク

概要

• 論文の詳細を見る

• Bond-dilution effects on the ground state of the square-lattice antiferromagnetic Heisenberg model, consisting of coupled bond-alternating chains, are investigated by means of quantum Monte Carlo simulation. It is found that, when the ground state of the nondiluted system is a nonmagnetic state with a finite spin gap, a sufficiently weak bond dilution induces a disordered state with a mid-gap in the original spin gap, and under a strong bond dilution an antiferromagnetic long-range order emerges. While the site-dilution-induced long-range order is induced by an infinitesimal concentration of dilution, there exists a finite critical concentration in the case of bond dilution. We argue that this essential difference is due to the occurrence of two types of effective interactions between induced magnetic moments in the case of bond dilution, and that the antiferromagnetic long-range-ordered phase does not appear until the magnitudes of the two interactions become comparable.

• 社団法人日本物理学会の論文
• 2006-12-15

著者

• Takayama H

  Univ. Tokyo Kashiwa Jpn

• TAKAYAMA Hajime

  Institute for Solid State Physics, University of Tokyo

• TAKAYAMA Hajime

  The Institute for Solid State Physics, The University of Tokyo

• YASUDA Chitoshi

  Department of Physics and Mathematics, Aoyama Gakuin University

• TODO Synge

  Department of Applied Physics, University of Tokyo

• YASUDA Chitoshi

  Institute for Solid State Physics, University of Tokyo

• TODO Synge

  Institute for Solid State Physics, University of Tokyo

• Takayama Hajime

  Institute For Solid State Physics University Of Tokyo

• Todo Synge

  Department Of Applied Physics University Of Tokyo:crest Japan Science And Technology Agency

• Yasuda Chitoshi

  Department Of Physics And Mathematics Aoyama Gakuin University

• Yasuda C

  Sci. Univ. Tokyo Chiba

• Yasuda Chitoshi

  Department Of Physics And Earth Sciences Faculty Of Science University Of The Ryukyus

• Takayama Hajime

  Institute For Solid State Physics The University Of Tokyo

• Takayama Hajime

  Department Of Physics Faculty Of Science Hokkaido University

• TAKAYAMA Hajime

  Research Institute for Fundamental Phisics, Kyoto University

• TODO Synge

  Institute for Solid State Physics, University of Tokyo:Theoretische Physik, Eidgenossische Technische Hochschule

関連論文

• Computational Experiment on Glassy Dynamic Nature of Field-Cooled Magnetization in Ising Spin-Glass Model(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Fragility of the Equilibrium State in the Four-Dimensional ±J Ising Spin Glass
• Field-Shift Aging Protocol on 3D Ising Spin-Glass Model : Dynamical Crossover between the Spin-Glass and Paramagnetic States(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model : III. Cumulative Memory and 'Chaos' Effects in the Temperature-Shift Protocol(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Numerical Study of Aging Phenomena in Short-Ranged Spin Glasses
• Exchanging Monte Carlo Dynamics in the SK Model
• Relaxational Modes and Aging in the Glauber Dynamics of the Sherrington-Kirkpatrick Model
• Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model : III. Cumulative Memory and 'Chaos' Effects in the Temperature-Shift Protocol(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model : III. Cumulative Memory and 'Chaos' Effects in the Temperature-Shift Protocol(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model. II. Quasi-Equilibrium Regime of Spin Auto-Correlation Function : Condensed Matter: Electronic Properties, etc.
• Numerical Study on Aging Dynamics in Ising Spin-Glass Models: Temperature-Change Protocols (Frontiers in Magnetism)
• Numerical Study on Aging Dynamics in the 3D Ising Spin-Glass Model.I.Energy Relaxation and Domain Coarsening
• Dynamics of the Heisenberg Spin Glass Model in the 'Griffiths Phase' : Analysis by the Distribution Function of Relaxation Times of Individual Spins
• 29a-D-2 2次元スピングラスのエイジング現象と緩和時間分布
• Bond-Dilution-Induced Quantum Phase Transitions in Heisenberg Antiferromagnets(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Dilution Effects on Two-Dimensional Heisenberg Antiferromagnets with Non-Magnetic Spin-Gapped Ground State
• Ground State of S = 1 Heisenberg Ladders
• Quantum Phase Transition of Two-Dimensional Diluted Heisenberg Antiferromagnet
• Quantum Monte Carlo Study of S=1 Random Antiferromagnetic Heisenberg Chain (Frontiers in Magnetism)
• Magnetic Responses of Mean-Field Ising Models for Reentrant Spin Glasses
• スピングラスにおける緩和現象(京大基礎研短期研究計画「秩序化における乱れと非線型」,研究会報告)
• スピングラス
• スピングラスについて : 平均均場理論を軸として(基研短期研究会『統計物理の現状と展望』〜STATPHYS19に向けて〜,研究会報告)
• On Phase Diagrams of the Extended Mean Field Model for Spin Glasses : Mean Field Description of Random Network Model for Spin Glass-Ferromagnetic Systems
• スピングラスのSlow Dynamics(基研モレキュール型研究会「凝縮系物理学における遅い動的過程」,研究会報告)
• An Extended Mean Field Model for Spin Glasses: Antiferromagnetic-Spin Glass Systems : Condensed Matter and Statistical Physics
• Dynamical Mean Field Theory of Spin Glasses and Their Phase Transitions in ac External Fields
• 電荷密度波のダイナミクス
• 6 フラストレーションを含むスピン系の計算機実験(凝縮系種々相の最近の展望,科研費研究会報告)
• 29a-A-10 Polymerの電気泳動に対するBond Fluctuation Modelのシミュレーション II
• 2a-B-10 Polymer の電気泳動に対する Bond Fluctuation Model のシミュレーション
• 12p-Z-2 スピングラスと(ポリマー)ガラスの緩和現象
• 30a-ZJ-1 非共存リエントラント転移に関するランダムネットワーク描象の平均場模型
• 4p-TE-6 スピングラス系の研究
• Magnetic Properties of Two-Dimensional Dipolar Squares : Boundary Geometry Dependence(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Peculiar 'from-Edge-to-Interior' Spin Freezing in a Magnetic Dipolar Cube(General)
• Incommensurate-Commensurate Crossover in Generalized One-Dimensional Ginzburg-Landau Fields
• Conformational Entropy Mechanism for Periodic Motion of DNA under Constant-Field Gel Electrophoresis(Cross-disciplinary physics and related areas of science and technology)
• Slow Dynamics in the 'Griffiths Phase' of the Two-Dimensional Ising Spin Glass
• Statistical Mechanics of the 1D Sine-Gordon System.II.Transfer Integral Analysis in the Intermediate Temperature Region
• Spin-Wave Theory of the Multiple-Spin Exchange Model on a Triangular Lattice in a Magnetic Field : 3-Sublattice Structures(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Effective Exclusive Volume for Hard-Core Systems in the Liquid Region
• Continuous-Time Loop Algorithm for General-S Spin Systems
• Randomness-driven Quantum Phase Transition in Bond-alternating Haldane Chain(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Monte-Carlo Simulation of a Gaussian Isign Spin Glass : Bond Patterns and Clustering Feature
• NUMERICAL STUDY ON ONE-DIMENSIONAL INCOMMENSURATE CHAGE-DENSITY-WAVES IN THE WEAK PINNING REGIME(THEORIES ON CDW NONLINEAR DYNAMICS, International Symposium on NONLINEAR TRANSPORT AND RELATED PHENOMENA IN INORGANIC QUASI ONE DIMENSIONAL CONDUCTORS)
• Monte Carlo Simulations on Nearest Neighbor Gaussian Ising Spin Glass with Finite Means (J≠0)
• Monte Carlo Study of a Triangular Ising Lattice.II.Occurrence of the Kosterlitz-Thouless-Like Phase Transition
• スピングラスの最近の理論
• "Glassy Dynamics" in Ising Spin Glasses : Experiment and Simulation(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)
• Aging Phenomena in Ising Spin Glasses in Magnetic Field : Simulation and Experiment
• Monte Carlo Study on the 2D ±J Ising Spin Glass : Dynamical Behavior of Individual Spins and Spin Clusters
• Phase Diagram of Three-Dimensional Site-Random Ising Model
• Order-Disorder Transition of a Two-Dimensional Spin 1/2 Heisenberg Antiferromagnet with Nonmagnetic Impurities
• Local-Ansatz Approach with Momentum Dependent Variational Parameters to Correlated Electron Systems(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Effects of Impurities in Quasi-One-Dimensional S=1 Antiferromagnets(Impurity and Pressure Effects, Field-Induced Phase Transitions and Dynamics in Quantum Spin Systems)
• Electrophoresis of a Polyelectrolyte in a Space with Immobile Obstacles
• Statistical Mechanics of the 1D Sine-Gordon System. I. Phonon Free Energy and Breather Problem
• Superconducting Fluctuation Effects on the S-1-N Junction Current
• Thermodynamic Fluctuation of the Order Parameter in the Vortex State of Type II Superconductors
• Nonlinear Susceptibilities of the Sherrington-Kirkpatrick Model and the Spherical Model
• Linear Response Theory in the Vortex State of Dirty Type-II Superconductors
• A Remark on the Flux-Flow Resistivity of Dirty Type-II Superconductors
• On the Commensurate-Incommensurate Transition in a 2D Classical Sine-Gordon System
• Effect of Fluctuations in the Superconducting Order Parameter on the Electronic States
• Higher Order Effects Due to Superconducting Fluctuation on Electrical Conductivity
• Spin Dependence of the Critical Concentration for the Neel State of 2D Impure Heisenberg Antiferromagnets
• Quantum Phase Transition in Antiferromagnetic Heisenberg Chains Coupled to Phonons
• High-Field Magnetism of the Spin-Ladder Material Na2Fe2(C2O4)3(H2O)2
• Numerical Study of Aging Phenomena in Short-Ranged Spin Glasses
• Quantum Phase Transition of Two-Dimensional Diluted Heisenberg Antiferromagnet
• Functional Integral Method on Superconducting Critical Phenomena. II : A Zero-Dimensional Superconductor
• Fragility of the Equilibrium State in the Four-Dimensional ±J Ising Spin Glass
• Aging Phenomena in Ising Spin Glasses in Magnetic Field : Simulation and Experiment
• On the Spatial Correlation of Spins in Disordered Magnets
• Randomness-driven Quantum Phase Transition in Bond-alternating Haldane Chain(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

もっと見る 閉じる

スポンサーリンク