Negative Coulomb drag in a one-dimensional wire

M. Yamamoto, M. Stopa, Y. Tokura, Y. Hirayama, S. Tarucha

Research output: Contribution to journalArticlepeer-review

67 Citations (Scopus)

Abstract

We observed negative Coulomb drag for parallel coupled quantum wires, in which electrons flow in the opposite directions between the wires. This only occurred under the conditions of strong correlation in the wires, that is, low density, high magnetic field, and low temperature, and cannot be addressed by a standard theory of momentum transfer. We propose a Coulomb drag model in which formation of a Wigner crystal state in the drag wire and a particle-like state in the drive wire is taken into account.

Original languageEnglish
Pages (from-to)204-207
Number of pages4
JournalScience
Volume313
Issue number5784
DOIs
Publication statusPublished - 2006 Jul 14
Externally publishedYes

ASJC Scopus subject areas

  • General

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