OBSERVATION OF COLLECTIVE EXCITATIONS IN THE FRACTIONAL QUANTUM HALL-EFFECT

被引：203
作者：
PINCZUK, A
DENNIS, BS
PFEIFFER, LN
WEST, K
机构：
[1] AT and T Bell Laboratories, Murray Hill
来源：
PHYSICAL REVIEW LETTERS | 1993年 / 70卷 / 25期
关键词：
D O I：
10.1103/PhysRevLett.70.3983
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A long wavelength, low-energy excitation of the fractional quantum Hall state at v=1/3 has been observed by inelastic light scattering. The mode appears as a very sharp peak with marked temperature and magnetic field dependence. Its energy is consistent with theoretical predictions for the collective gap excitations of the incompressible quantum fluid. Spectra interpreted as q=0 collective spin-wave excitations also display the strong dependence on field and temperature associated with the fractional quantum Hall state.
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页码：3983 / 3986
页数：4
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