QUANTUM PHASES IN PARTIALLY FILLED LANDAU LEVELS
نویسندگان
چکیده
منابع مشابه
Quantum Phases in Partially Filled Landau Levels
We compare the energies of different electron solids, such as bubble crystals with triangular and square symmetry and stripe phases, to those of correlated quantum liquids in partially filled intermediate Landau levels. Multiple transitions between these phases when varying the filling of the top-most partially filled Landau level explain the observed reentrance of the integer quantum Hall effe...
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We have measured the diagonal conductivity, sigma(xx), in the microwave regime of an ultrahigh mobility two dimensional electron system. We find a sharp resonance in Re[sigma(xx)] versus frequency when nu>4 and the partial filling of the highest Landau level, nu(*), is approximately 1/4 or 3/4 and temperatures <0.1 K. The resonance appears for a range of nu(*) from 0.20 to 0.38 and again from 0...
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The pair distribution function and the static structure factor are computed for composite fermions. Clear and robust evidence for a 2kF structure is seen in a range of filling factors in the vicinity of the half-filled Landau level. Surprisingly, it is found that filled Landau levels of composite fermions, i.e. incompressible FQHE states, bear a stronger resemblance to a Fermi sea than do fille...
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ژورنال
عنوان ژورنال: International Journal of Modern Physics B
سال: 2004
ISSN: 0217-9792,1793-6578
DOI: 10.1142/s0217979204027013