Effects of Single-site Anisotropy on Mixed Diamond Chains with Spins 1 and 1/2
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概要
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Effects of single-site anisotropy on mixed diamond chains with spins 1 and 1/2 are investigated in the ground states and at finite temperatures. There are phases where the ground state is a spin cluster solid, i.e., an array of uncorrelated spin-1 clusters separated by singlet dimers. The ground state is nonmagnetic for the easy-plane anisotropy, while it is paramagnetic for the easy-axis anisotropy. Also, there are the Néel, Haldane, and large-D phases, where the ground state is a single spin cluster of infinite size and the system is equivalent to the spin-1 Heisenberg chain with alternating anisotropy. The longitudinal and transverse susceptibilities and entropy are calculated at finite temperatures in the spin-cluster-solid phases. Their low-temperature behaviors are sensitive to anisotropy.
- 2011-10-15
著者
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Hida Kazuo
Division Of Material Science Graduate School Of Science And Engineering Saitama University
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Takano Ken'ichi
Toyota Technological Institute, Nagoya 468-851, Japan
関連論文
- Exotic ground state phases of S=1/2 heisenberg Delta-chain with ferromagnetic main chain
- Ferrimagnetic and long period antiferromagnetic phases in high spin Heisenberg chains with D-modulation
- Erratum : Critical Properties of Spin-1 Antiferromagnetic Heisenberg Chains with Bond Alternation and Uniaxial Single-Ion-Type Anisotropy (vol 69, pg 237, 2000)
- Haldane Phases and Ferrimagnetic Phases with Spontaneous Translational Symmetry Breakdown in Distorted Mixed Diamond Chains with Spins 1 and 1/2
- Quantum Phase Transitions in Alternating-Bond Mixed Diamond Chains with Spins 1 and 1/2
- Statistical Transfer Matrix Study of the \pm J Multileg Ising Ladders and Tubes
- Effects of Single-site Anisotropy on Mixed Diamond Chains with Spins 1 and 1/2
- Modified Spin Wave Analysis of Low Temperature Properties of the Spin-1/2 Frustrated Ferromagnetic Ladder
- Topological Phases of the Spin-1/2 Ferromagnetic--Antiferromagnetic Alternating Heisenberg Chain with Frustrated Next-Nearest-Neighbour Interaction
- Finite Temperature Properties of Mixed Diamond Chain with Spins 1 and 1/2
- Erratum: "Exotic Ground State Phases of $S=1/2$ Heisenberg $\Delta$-Chain with Ferromagnetic Main Chain"