Thermal and Tunneling Pair Creation of Quasiparticles in Quantum Hall Systems

Details Thermal and Tunneling Pair Creation of Quasiparticles in Quantum Hall Systems Thermal and Tunneling Pair Creation of Quasiparticles in Quantum Hall Systems

1999-07-19

arxiv.org/abs/cond-mat/9907263v1

Phys. Rev. B, 60 (1999) 8811

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 6 PS figures, to be published in Phys.Rev.B

Scientific paper

10.1103/PhysRevB.60.8811

We make a semiclassical analysis of thermal pair creations of quasiparticles at various filling factors in quantum Hall systems. It is argued that the gap energy is reduced considerably by the Coulomb potential made by impurities. It is also shown that a tunneling process becomes important at low temperature and at strong magnetic field. We fit typical experimental data excellently based on our semiclassical results of the gap energy.

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