Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1997-09-03
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
5 pages, Revtex file, 2 figures, submitted to Physical Review Letters one more reference is added.
Scientific paper
10.1103/PhysRevLett.79.3242
Based on a newly derived microscopic fractional quantum Hall edge model, we study its thermodynamics at finite temperature. For the dressed energy spectrum a critical energy scale determined by the temperature exists, below which the refractive dispersion which is essential to the model's bosonization to a Luttinger liquid is smeared. According to this observation, a temperature-dependent crossover picture is proposed, and applied to the analysis of a recent tunneling experiment in comparison with the standard Luttinger liquid theory, and a better fit to the features of the measured conductance-temperature curve is achieved. We also consider the role of the Coulomb interaction in the thermodynamics and find that a crossover exists during which the influence of the Coulomb interaction is suppressed with the increase of temperature.
Yu Yue
Zheng Wenjun
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