Title :
Dephasing processes in quantum hall wires
Author :
Cresti, Alessandro ; Parravicini, Giuseppe Pastori
Author_Institution :
Scuola Normale Superiore, Pisa
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;
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
DOI :
10.1109/NANO.2007.4601237
