Dephasing processes in quantum hall wires

Author

Cresti, Alessandro ; Parravicini, Giuseppe Pastori

Author_Institution

Scuola Normale Superiore, Pisa

fYear

2007

fDate

2-5 Aug. 2007

Firstpage

484

Lastpage

488

Abstract

We study the effects of phase-breaking scattering processes on the electron conductance of quantum wires in strong magnetic fields. Our treatment makes use of the nonequilibrium Keldysh formalism and the self-consistent Born approximation for the many-body interactions. The differential conductance is carried out numerically by means of continued fractions and renormalization techniques within a tight-binding framework. We provide a unified description of dissipative and dissipationless currents, with clear crossovers from one to the other regime.

Keywords

SCF calculations; quantum Hall effect; quantum wires; renormalisation; spin-orbit interactions; tight-binding calculations; dephasing processes; differential electron conductance; dissipationless current; dissipative current; electronic structure; many-body interactions; nonequilibrium Keldysh formalism; phase-breaking scattering processes; quantum Hall wires; renormalization techniques; self consistent Born approximation; spin-orbit interactions; strong magnetic fields; tight-binding calculation; Approximation methods; Charge carrier processes; Electrons; Fluctuations; Green´s function methods; Magnetoelasticity; Nanotechnology; Particle scattering; Shape measurement; Wires; dephasing; quantum wires; shot noise; strong magnetic fields;

fLanguage

English

Publisher

ieee

Conference_Titel

Nanotechnology, 2007. IEEE-NANO 2007. 7th IEEE Conference on

Conference_Location

Hong Kong

Print_ISBN

978-1-4244-0607-4

Electronic_ISBN

978-1-4244-0608-1

Type

conf

DOI

10.1109/NANO.2007.4601237

Filename

4601237