Doping and temperature dependence of electronic Raman response in cuprate superconductors

作者：Geng, Zhihao; Feng, Shiping^*

来源：Physics Letters, Section A: General, Atomic and Solid State Physics , 2010, 375(2): 214-219.

DOI：10.1016/j.physleta.2010.10.062

• Raman response
• Cooper pair density
• Cuprate superconductor
• Kinetic energy driven superconducting mechanism

The doping and temperature dependence of the electronic Raman response in cuprate superconductors is studied within the kinetic energy driven superconducting mechanism. It is shown that the temperature dependent depletion at low-energy shifts is faster in the B-1g symmetry than in the B-2g symmetry. In analogy to the domelike shape of the doping dependent superconducting transition temperature, the maximal peak energy in the B-2g channel occurs around the optimal doping, and then decreases in both underdoped and overdoped regimes. Moreover, the overall density of Cooper pairs increases with increasing doping in the underdoped regime.

• 出版日期2010-12-1
• 单位北京师范大学