摘要
通过引入电子的弹性散射和非弹性散射的自能和相应的物理格林函数，将磁场中的Ｍａｈａｎ－Ｈｎｓｃｈ量子输运方程推广到自旋玻璃系统中，在电子的近弹性散射近似下，求解了ｓ－ｄ交换相互作用导致的自旋玻璃态霍耳电导；获得了电阻率与自旋玻璃Ｅｄｗａｒｄｓ－Ａｎｄｅｒｓｏｎ（ＥＡ）序参数和局域磁化率之间的关系；讨论了自旋玻璃热电势和特征温度。
The static Mahan-Hnsch quantum transport equation in applied magnetic fieldsis extended to spin glass systems through introducing physical self-energies of elasticand inelastic scattering. In the quasi- elastic scattering limit,the Hall conductivity forspin glass model with the s-d exchange interaction between electrons and localized moments is evaluated by using this equation,The relation between resistivity and theEdwards-Anderson(EA)spin glass parameter and local susceptibility is obtained. Fi-nally,thermoelectric power of spin glasses and some interesting characteristic tempe-ratures are discussed.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1994年第6期1024-1028,共5页
Acta Physica Sinica
基金
国家自然科学青年基金
