SUPPRESSION OF THE LANDAU-LEVEL COINCIDENCE - A PHASE-TRANSITION IN TILTED MAGNETIC-FIELDS

被引：60
作者：
KOCH, S
HAUG, RJ
VONKLITZING, K
RAZEGHI, M
机构：
[1] MAX PLANCK INST FESTKORPERFORSCH,W-7000 STUTTGART 1,GERMANY
[2] NORTHWESTERN UNIV,CTR QUANTUM DEVICES,DEPT EECS,EVANSTON,IL 60208
来源：
PHYSICAL REVIEW B | 1993年 / 47卷 / 07期
关键词：
D O I：
10.1103/PhysRevB.47.4048
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Magnetotransport studies of GaxIn1-xAs/InP heterostructures in strong parallel magnetic fields at mK temperatures reveal a suppression of the coincidence of two Landau levels with opposite spin at filling factor 2. This phenomenon is explained by the occurrence of a phase transition from a spin-unpolarized state (at small tilt angles) to a spin-polarized state (at large tilt angles).
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页码：4048 / 4051
页数：4
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