Accueil du site > Séminaires > Séminaires 2009 > Theory of electronic Mach-Zehnder interferometers in the Integer Quantum Hall effect regime
Mardi 24 novembre 2009 — 14:00, salle du conseil de l’UFR, attention, lieu exceptionel
Theory of electronic Mach-Zehnder interferometers in the Integer Quantum Hall effect regime
Dmitry Kovrizhin (Oxford University)
par - 24 novembre 2009
Recent experiments with electronic Mach-Zehnder interferometers constructed from Integer quantum Hall edge states showed unexpected and remarkable effects of long-range electron interactions [1,2]. The most striking observation was the appearance of the lobes in the visibility of Aharonov-Bohm fringes as a function of applied source-drain bias voltage. In my talk I will give an overview of the experimental and theoretical results, concentrating on the exact solution which we obtained recently with J. T. Chalker [3] for the interferometers with long-range interactions at finite bias voltage. Our results match experimental findings of [1,2].
References :
[1] I. Neder, M. Heiblum, Y. Levinson, D. Mahalu, and V. Umansky, Phys. Rev. Lett. 96, 016804, (2006).
[2] P. Roulleau, F. Portier, D. C. Glattli, P. Roche, A. Cavanna, G. Faini, U. Gennser, and D. Mailly, Phys. Rev. B 76, 161309(R) (2007).
[3] D. L. Kovrizhin and J. T. Chalker, arXiv:0903.3387. (accepted in PRB Rapid Communication)