Berry's phase for large spins in external fields

被引:11
|
作者
Kalatsky, VA [1 ]
Muller-Hartmann, E
Pokrovsky, VL
Uhrig, GS
机构
[1] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA
[2] Univ Cologne, Inst Theoret Phys, D-50937 Cologne, Germany
[3] LD Landau Theoret Phys Inst, Chernogolovka 142432, Russia
关键词
D O I
10.1103/PhysRevLett.80.1304
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
It is shown that even for large spins J the fundamental difference between integer and half-integer spins persists. In a quasiclassical description this difference enters via Berry's connection. This general phenomenon is derived and illustrated for large spins confined to a plane by crystal electric fields. Physical realizations ate rare-earth nickel borocarbides. Magnetic moments for half-integer spin (Dy3+,J = 15/2) and magnetic susceptibilities for integer spin (Ho3+,J = 8) are calculated. Experiments are proposed to furnish evidence for the predicted fundamental difference.
引用
收藏
页码:1304 / 1307
页数:4
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