Work

Interference and interaction effects in adiabatic pumping through quantum dots

Year: 2010

Type: article

Abstract: In order to investigate the effects of interference and interaction in adiabatic pumping, we consider an Aharonov-Bohm (AB) interferometer with a quantum dot embedded either in one or in both arms. We employ a real-time formalism and we perform an expansion both in the tunnel-coupling strengths between dot and leads and in the pumping frequency, taking into account the Coulomb interaction nonperturbatively. We find that pumping in a single-dot AB interferometer has a peristaltic but phase-coherent character. In a double-dot AB interferometer, we find a pumping mechanism that relies purely on quantum-mechanical interference and has no classical counterpart.

Source: Physical Review B

DOI: 10.1103/physrevb.81.085302

Authors: Bastian Hiltscher, Michele Governale, Jürgen König

Institutions: University of Duisburg-Essen, Victoria University of Wellington, MacDiarmid Institute for Advanced Materials and Nanotechnology

Language: English

Topic: Quantum and electron transport phenomena

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: green

Funder: Deutsche Forschungsgemeinschaft

OpenAlex ID: W2030701288

FWCI: 1.21

Cites: 53

Cited by: 16

Related to: 10