Nano Archive

Electronic conductance in open quantum dots

Cresti, Alessandro (2007) Electronic conductance in open quantum dots. Nanotechnology, 18 (5). 055403. ISSN 09574484

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Official URL: http://dx.doi.org/10.1088/0957-4484/18/5/055403

Abstract

We simulate electron transport through a model open quantum dot device in a two-dimensional electron gas. The dot is defined by a circular region enclosed by two metallic gates, with two small openings at its ends. We show that the differential conductance has different behaviours as a function of the magnetic field: for low fields irregular oscillations are present, while a typical Aharonov–Bohm pattern appears in the integer quantum Hall regime. Our numerical results are interpreted by means of the theoretical imaging of current distribution and local density-of-states, obtained by the Keldysh Green’s function formalism.

Item Type:Article
Subjects:Physical Science > Nanoelectronics
Physical Science > Quantum phenomena
ID Code:197
Deposited By:Lesley Tobin
Deposited On:17 Nov 2008 14:54
Last Modified:30 Jan 2009 15:46

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