HALF-INTEGRAL SPIN-SINGLET QUANTUM HALL-EFFECT

被引:14
作者
BELKHIR, L
WU, XG
JAIN, JK
机构
[1] Department of Physics, State University of New York, Stony Brook
来源
PHYSICAL REVIEW B | 1993年 / 48卷 / 20期
关键词
D O I
10.1103/PhysRevB.48.15245
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We provide numerical evidence that the ground state of a short-range-interaction model at nu=1/2 is incompressible and spin singlet for a wide range of repulsive interactions. Furthermore it is accurately described by a trial wave function studied earlier. For the Coulomb interaction we find that this wave function provides a good description of the lowest-lying spin-singlet state, and propose that fractional quantum Hall effect would occur at nu=1/2 if this state became the global ground state. Some conclusions of an earlier paper are invalidated by the present numerical study of a larger system; these will be indicated.
引用
收藏
页码:15245 / 15249
页数:5
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