Quantum dots in high magnetic fields: Rotating-Wigner-molecule versus composite-fermion approach

Details Quantum dots in high magnetic fields: Rotating-Wigner-molecule versus composite-fermion approach Quantum dots in high magnetic fields: Rotating-Wigner-molecule versus composite-fermion approach

2003-02-25

arxiv.org/abs/cond-mat/0302504v3

Phys.Rev. B68 (2003) 035326

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Extensive clarifications were added (see new footnotes) regarding the difference between the rotating Wigner molecule and the

Scientific paper

10.1103/PhysRevB.68.035326

Exact diagonalization results are reported for the lowest rotational band of N=6 electrons in strong magnetic fields in the range of high angular momenta 70 <= L <= 140 (covering the corresponding range of fractional filling factors 1/5 >= nu >= 1/9). A detailed comparison of energetic, spectral, and transport properties (specifically, magic angular momenta, radial electron densities, occupation number distributions, overlaps and total energies, and exponents of current-voltage power law) shows that the recently discovered rotating-electron-molecule wave functions [Phys. Rev. B 66, 115315 (2002)] provide a superior description compared to the composite-fermion/Jastrow-Laughlin ones.

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