Discrete quantum motors

R. Roncaglia, G. P. Tsironis

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


We investigate dissipative quantum motion of a particle in a discrete periodic asymmetric lattice coupled to an Ohmic bath and subjected to a nonbiased oscillatory field. In the adiabatic forcing regime we find analytically external forcing rectification resulting in a motor mechanism through persistent current creation. The direction and intensity of the motor operation is controlled by the competing mechanisms of discreteness induced Stark localization and phonon assisted ratchet delocalization. Maximal current of either sign is predicted at a parameter dependent characteristic temperature.

Original languageEnglish
Pages (from-to)10-13
Number of pages4
JournalPhysical Review Letters
Issue number1
Publication statusPublished - 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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