机构地区: 中山大学物理科学与工程技术学院物理系
出 处: 《中山大学学报论丛》 1992年第2期6-10,共5页
摘 要: 对于2+1维BCS型超导体与自旋密度波共存的系统,在平均场近似下,应用含温度格林函数方法得出了超导相变温度Tc与自旋密度波序参量M的关系。对典型系统作数值计算表明,在这类超导体中,自旋密度波将降低相变温度Tc,说明目前发现的高Tc超导体是不同于BCS型超导体. The superconducing transition temperature T_c of 2+1 dimensional BCS- type superconductors in the presence of the spin-density wave is studied in the mean-field appoximation. by using the temperature Green function we obtain the relation between T_c and the spin density wave order parameter M. It is shown that T_c is always depressed by the presence of the spin density wave.