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Phys. Rev. B 64, 201305 (2001) [4 pages]

Effect of inelastic scattering on parametric pumping

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M. Moskalets1,2 and M. Büttiker1
1Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland
2Department of Metal and Semiconductor Physics, National Technic University “Kharkov Polytechnic Institute,” Kharkov, Ukraine

Rapid Communication Received 2 August 2001; published 18 October 2001

Pumping of charge in phase-coherent mesoscopic systems due to the out-of-phase modulation of two parameters has recently found considerable interest. We investigate the effect of inelastic processes on the adiabatically pumped current through a two terminal mesoscopic sample. We find that the loss of coherence does not suppress the pumped charge but rather an additional physical mechanism for an incoherent pump effect comes into play. In a fully phase-incoherent system the pump effect is similar to a rectification effect.


©2001 The American Physical Society

URL: http://link.aps.org/abstract/PRB/v64/e201305
DOI: 10.1103/PhysRevB.64.201305
PACS: 72.10.-d, 73.23.-b

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