Europhys. Lett.
Volume 73, Number 4, February 2006
Page(s) 574 - 580
Section Condensed matter: electronic structure, electrical, magnetic, and optical properties
Published online 13 January 2006
Europhys. Lett., 73 (4), pp. 574-580 (2006)
DOI: 10.1209/epl/i2005-10444-0

Analysis of shot noise suppression in mesoscopic cavities in a magnetic field

P. Marconcini, M. Macucci, G. Iannaccone, B. Pellegrini and G. Marola

Dipartimento di Ingegneria dell'Informazione, Università di Pisa Via Caruso 16, I-56122 Pisa, Italy

received 15 March 2005; accepted in final form 29 December 2005
published online 13 January 2006

We present a numerical investigation of shot noise suppression in mesoscopic cavities and an intuitive semiclassical explanation of the behavior observed in the presence of an orthogonal magnetic field. In particular, we conclude that the decrease of shot noise for increasing magnetic field is the result of the interplay between the diameter of classical cyclotron orbits and the width of the apertures defining the cavity. Good agreement with published experimental results is obtained, without the need of introducing fitting parameters.

72.70.+m - Noise processes and phenomena.
73.23.-b - Electronic transport in mesoscopic systems.
75.75.+a - Magnetic properties of nanostructures.

© EDP Sciences 2006