Acoustoelectric pumping through a ballistic point contact in the presence of magnetic fields

O. Entin-Wohlman, Y. Levinson, P. Wölfle

Research output: Contribution to journalArticlepeer-review

Abstract

The acoustoelectric current J induced in a ballistic point contact (PC) by a surface acoustic wave is calculated in the presence of a perpendicular magnetic field B. It is found that the dependence of the current on the Fermi energy in the terminals is strongly correlated with that of the PC conductance: J is small at the conductance plateaus and is large at the steps. Like the conductance, the acoustoelectric current has the same functional behavior as in the absence of a field, but with renormalized energy scales, which depend on the strength of the magnetic field B.

Original languageEnglish
Article number195308
Pages (from-to)1953081-1953087
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume64
Issue number19
DOIs
StatePublished - 15 Nov 2001

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