QUENCHED AND NEGATIVE HALL-EFFECT IN PERIODIC MEDIA - APPLICATION TO ANTIDOT SUPERLATTICES

被引:44
作者
FLEISCHMANN, R
GEISEL, T
KETZMERICK, R
机构
[1] UNIV FRANKFURT,SONDERFORSCHUNGSBEREICH NICHTLINEARE DYNAM,D-60054 FRANKFURT,GERMANY
[2] UNIV CALIF SANTA BARBARA,DEPT PHYS,SANTA BARBARA,CA 93106
来源
EUROPHYSICS LETTERS | 1994年 / 25卷 / 03期
关键词
D O I
10.1209/0295-5075/25/3/011
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We find the counterintuitive result that electrons move in opposite direction to the free-electron (E X B)-drift when subject to a two-dimensional periodic potential. We show that this phenomenon arises from chaotic channeling trajectories and by a subtle mechanism leads to a negative value of the Hall resistivity for small magnetic fields. The effect is present also in experimentally recorded Hall curves in antidot arrays on semiconductor heterojunctions but so far has remained unexplained.
引用
收藏
页码:219 / 224
页数:6
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