Modified Spin Wave Analysis of Low Temperature Properties of the Spin-1/2 Frustrated Ferromagnetic Ladder
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概要
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Low temperature properties of the spin-1/2 frustrated ladder with ferromagnetic rungs and legs, and two different antiferromagnetic next nearest neighbor interactions are investigated using the modified spin wave approximation in the region with ferromagnetic ground states. The temperature dependence of the magnetic susceptibility and magnetic structure factors is calculated. The results are consistent with the numerical exact diagonalization results in the intermediate temperature range. Below this temperature range, the finite size effect is significant in the numerical diagonalization results, while the modified spin wave approximation gives more reliable results. The low temperature properties near the limit of the stability of the ferromagnetic ground state are also discussed.
- 2012-03-15
著者
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Hida Kazuo
Division Of Material Science Graduate School Of Science And Engineering Saitama University
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Iino Takashi
Division of Material Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
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Hida Kazuo
Division of Material Science, Graduate School of Science and Engineering, Saitama University, Saitama 338-8570, Japan
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- 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
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- 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"