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Abstract: Within the framework of the kinetic energy driven superconducting mechanism,the effect of the extended impurity scatterers on the quasiparticle transportof cuprate superconductors in the superconducting state is studied based on thenodal approximation of the quasiparticle excitations and scattering processes.It is shown that there is a cusplike shape of the energy dependent microwaveconductivity spectrum. At low temperatures, the microwave conductivityincreases linearly with increasing temperatures, and reaches a maximum atintermediate temperature, then decreases with increasing temperatures at hightemperatures. In contrast with the dome shape of the doping dependentsuperconducting gap parameter, the minimum microwave conductivity occurs aroundthe optimal doping, and then increases in both underdoped and overdopedregimes.



Author: Zhi Wang, Huaiming Guo, Shiping Feng

Source: https://arxiv.org/







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