Light scattering by low lying quasiparticle excitations in the fractional quantum Hall regime
نویسندگان
چکیده
منابع مشابه
Crossover and coexistence of quasiparticle excitations in the fractional quantum hall regime at nu < or =1/3.
New low-lying excitations are observed by inelastic light scattering at filling factors nu=p/(phip+/-1) of the fractional quantum Hall regime with phi=4. Coexisting with these modes throughout the range nu < or =1/3 are phi=2 excitations seen at 1/3. Both phi=2 and phi=4 excitations have distinct behaviors with temperature and filling factor. The abrupt first appearance of the new modes in the ...
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Tunneling of fractionally charged quasiparticles (QPs) through a barrier is considered in the context of a multiply connected geometry. In this geometry global constraints do not prohibit such a tunneling process. The tunneling amplitude is evaluated and the crossover from mesoscopic QP-dominated to electron-dominated tunneling as the system's size is increased is found. The presence of disorde...
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ژورنال
عنوان ژورنال: Physica E: Low-dimensional Systems and Nanostructures
سال: 2003
ISSN: 1386-9477
DOI: 10.1016/j.physe.2003.09.026