Exciton transport and Andreev reflection in a bilayer quantum hall system

A. D.K. Finck, J. P. Eisenstein, L. N. Pfeiffer, K. W. West

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

We demonstrate that counterflowing electrical currents can move through the bulk of the excitonic quantized Hall phase found in bilayer two-dimensional electron systems (2DES) even as charged excitations cannot. These counterflowing currents are transported by neutral excitons which are emitted and absorbed at the inner and outer boundaries of an annular 2DES via Andreev reflection.

Original languageEnglish (US)
Article number236807
JournalPhysical review letters
Volume106
Issue number23
DOIs
StatePublished - Jun 10 2011
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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