Many-body effects on the transmission probability through a tunnel junction in a strong magnetic field

We investigate effects of electron-electron interaction on the transmission probability of electrons through a tunnel junction in a strong magnetic field. We start with the Hartree-Fock approximation, and we show that the coulomb interaction, which gives rise to the divergence of Fock correction, sh...

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Bibliographic Details
Published in:Journal of the Physical Society of Japan 2003-07, Vol.72 (7), p.1706-1717
Main Authors: KUBO, Toshihiro, KAWABATA, Arisato
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Electronic structure and electrical properties of surfaces, interfaces, thin films and low-dimensional structures
Electronic transport in interface structures
Electronic transport phenomena in thin films and low-dimensional structures
Exact sciences and technology
General theory, scattering mechanisms
Physics
Tunneling
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Summary:We investigate effects of electron-electron interaction on the transmission probability of electrons through a tunnel junction in a strong magnetic field. We start with the Hartree-Fock approximation, and we show that the coulomb interaction, which gives rise to the divergence of Fock correction, should be replaced by the dynamically screened interaction. We also show that we should use the bare coulomb interaction for Hartree term. We take into account higher order contributions using a simple renormalization group approach. The temperature dependence of the transmission probability is qualitatively similar to that of a one-dimensional system.
ISSN:0031-9015
1347-4073
DOI:10.1143/jpsj.72.1706