磁场中的重电子金属

HEAVY ELECTRON METALS IN A NONZERO MAGNETIC FIELD

本文应用slave-boson技巧,在平均场近似下,计算外加磁场作用下重电子金属的比热系数和磁化强度。结果表明,外加磁场对系统的重费密子特性具有压制作用。此外。还对重电子金属中反常磁致伸缩的实验结果给出理论解释。

The specific heat coefficient and magnetization of the heavy electron metals in a nonzero magnetic field are calculated by using the slave boson mean field theory. The results indicate that the heavy fermion feature of the system is depressed in the magnetic field. A theoretical explanation for anomalous volume magnetostriction of the heavy electron metals is also given in this paper.