Quantum Phase Transition in Antiferromagnetic Heisenberg Chains Coupled to Phonons
スポンサーリンク
概要
- 論文の詳細を見る
We develop an analytical approach based on a unitary transformation to investigate S=1/2 antiferromagnetic Heisenberg chains coupled to phonons, and find a new quantum phase transition at zero temperature. Although the usual phase transition occurs depending on the strengths of the spin--spin and spin--phonon interactions, the phase transition in the present work is induced by a change in the geometrical structure of the spin--phonon interaction. The magnetic properties of the phase transition can be understood in relation to a phase transition that has already been found in the frustrated J_{1}--J_{2} model.
- 2011-10-15
著者
-
Akiyama Satoru
Department Of Electrical Engineering Faculty Of Science And Technology Keio University
-
Yasuda Chitoshi
Department Of Physics And Earth Sciences Faculty Of Science University Of The Ryukyus
-
Akiyama Satoru
Department of General Education, Wakayama National College of Technology, Gobo, Wakayama 644-0023, Japan
-
Yasuda Chitoshi
Department of Physics and Earth Sciences, Faculty of Science, University of the Ryukyus, Nishihara, Okinawa 903-0213, Japan
関連論文
- Bond-Dilution-Induced Quantum Phase Transitions in Heisenberg Antiferromagnets(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
- The Nonlinear Effects of Pion-Quark Coupling in the Cloudy Bag Model
- Lateral Solid-Phase Recrystallization from the Crystal Seed Selectively Formed by Excimer Laser Annealing in Ge-Ion-Implanted Amorphous Silicon Films
- 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)
- 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)
- 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
- Lateral Solid-Phase Recrystallization from the Crystal Seed Selectively Formed by Excimer Laser Annealing in Ge-Ion-Implanted Amorphous Silicon Films