Spin superconductivity in the frustrated two-dimensional antiferromagnet in the square lattice
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- 作者：L.S. Lima
- 关键词：Spin transport ; Two-dimensional ; Frustrated spin systems
- 刊名：Journal of Magnetism and Magnetic Materials
- 出版年：2017
- 出版时间：1 February 2017
- 年：2017
- 卷：423
- 期：Complete
- 页码：51-56
- 全文大小：370 K
文摘
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The two-dimensional frustrated Heisenberg model was written in diagonalize form in the k space using the SU(2) Schwinger boson mean field theory.
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The spin current operator and the Matsubara Green function were calculated to this model.
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Using the Kubo formula, we determine the spin conductivity for this model.
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We obtain a behavior of the AC spin conductivity tending to infinity in the DC limit showing a superconductor character for the spin transport in this limit.