Coulomb Interaction Effect in Quantum Transport
نویسندگان
چکیده
منابع مشابه
Coulomb interaction and quantum transport through a coherent scatterer.
An interplay between charge discreteness, coherent scattering, and Coulomb interaction yields nontrivial effects in quantum transport. We derive a real-time effective action and an equivalent quantum Langevin equation for an arbitrary coherent scatterer and evaluate its current-voltage characteristics in the presence of interactions. Within our model, at large conductances G0 and low T (but out...
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We study the effect of the electron-electron interaction on the transport of spin polarized currents in metals and doped semiconductors in the diffusive regime. In addition to well-known screening effects, we identify two additional effects, which depend on many-body correlations and exchange and reduce the spin diffusion constant. The first is the “spin Coulomb drag” an intrinsic friction mech...
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One approximation is made to describe a M+1 electron many-body wavefunction by a M electron many-body wavefunction and a single electron wavefunction. Under this approximation, we have derived the Coulomb energy which relates the exciton energy Eexc in a quantum dot with the quasiparticle band gap (defined as the difference between the ionization energy and the electron affinity), and the Coulo...
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ژورنال
عنوان ژورنال: Journal of Superconductivity and Novel Magnetism
سال: 2010
ISSN: 1557-1939,1557-1947
DOI: 10.1007/s10948-010-0773-1