Magnetic and charge transport properties in underdoped YBa2Cu3O6+x and YBa2Cu4O8

被引：0
|
作者：
Li, Jian-Xin [1 ]
Gong, Chang-De [1 ]
机构：
[1] Nanjing Univ, Nanjing, China
来源：
Physica C: Superconductivity and its Applications | 1997年 / 274卷 / 1-2期
基金：
中国博士后科学基金;
关键词：
Charge transfer - High temperature superconductors - Magnetic properties - Neutron scattering - Nuclear magnetic resonance - Superconducting transition temperature - Yttrium compounds;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
An explanation of the closely related temperature dependences of both charge and spin excitations in the CuO2 plane for underdoped YBCO systems is presented. The spin pseudogap and the anomalous temperature dependences of the in-plane resistivity and the optical conductivity observed in these underdoped compounds are suggested to follow from the energy difference between the chemical potential and the energy of hole quasiparticles at the van Hove singularity (vHs). The numerical results based on the quasiparticle spectrum calculated by Dagatto et al. [Phys. Rev. Lett. 74 (1995) 310] are in good agreement with experiments.
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页码：149 / 155
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