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空穴型掺杂三角晶格反铁磁体反常的c-轴电荷动力学

ANOMALOUS c-AXIS CHARGE DYNAMICS IN HOLE DOPED TRIANGULAR ANTIFERROMAGNETS
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摘要 从t-J模型出发,在feimion-spin理论框架下研究了空穴型掺杂三角晶格反铁磁体的c-轴电荷动力学.结果表明,与四方晶格材料类似,空穴型掺杂三角晶格反铁磁体正常态的电荷动力学同样具有很强的各向异性,但是由于三角晶格固有的几何阻挫效应,使得二者的结果又稍有差异. The c-axis charge dynamics of the hole doped trianglar antiferromagnets is studied within the t-J model based on the fermion-spin theory. It is shown that, similar to square antiferromagnets, the charge dynamics of the hole doped triangular lattice is also anisotropic. But there are a few differences between triangular lattice and square lattice caused by the geometrical frustration in triangular antiferromagnets.
作者 梁颖 刘斌
机构地区 北京师范大学物理学系
出处 《北京师范大学学报（自然科学版）》 CAS CSCD 北大核心 2005年第4期369-372,共4页 Journal of Beijing Normal University(Natural Science)
基金 国家自然科学基金资助项目(10404001)
关键词 T-J模型 feimion-spin理论 三角晶格 层间输运 t-J model fermion-spin theory triangular antiferromagnets interlayer transport
分类号 O481 [理学—固体物理] O482.5 [理学—固体物理]
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参考文献14

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北京师范大学学报（自然科学版）
2005年 第4期

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