Document Detail

Crossover from adiabatic to antiadiabatic quantum pumping with dissipation.
MedLine Citation:
PMID:  21902299     Owner:  NLM     Status:  In-Data-Review    
Quantum pumping, in its different forms, is attracting attention from different fields, from fundamental quantum mechanics, to nanotechnology, to superconductivity. We investigate the crossover of quantum pumping from the adiabatic to the antiadiabatic regime in the presence of dissipation, and find general and explicit analytical expressions for the pumped current in a minimal model describing a system with the topology of a ring forced by a periodic modulation of frequency ω. The solution allows following in a transparent way the evolution of pumped dc current from much smaller to much larger ω values than the other relevant energy scale, the energy splitting introduced by the modulation. We find and characterize a temperature-dependent optimal value of the frequency for which the pumped current is maximal.
Franco Pellegrini; C Negri; F Pistolesi; Nicola Manini; Giuseppe E Santoro; Erio Tosatti
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Publication Detail:
Type:  Journal Article     Date:  2011-08-01
Journal Detail:
Title:  Physical review letters     Volume:  107     ISSN:  1079-7114     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-09-09     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  060401     Citation Subset:  IM    
SISSA, Via Bonomea 265, I-34136 Trieste, Italy and CNR-IOM Democritos National Simulation Center, Via Bonomea 265, I-34136 Trieste, Italy.
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