Negative Coulomb Drag in a One-Dimensional Wire-Reference-Cited by-同舟云学术

Negative Coulomb Drag in a One-Dimensional Wire

Published:2006-07-14 Issue:5784 Volume:313 Page:204-207
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Yamamoto M.¹²³⁴⁵,Stopa M.¹²³⁴⁵,Tokura Y.¹²³⁴⁵,Hirayama Y.¹²³⁴⁵,Tarucha S.¹²³⁴⁵

Affiliation:

1. Department of Applied Physics, University of Tokyo, Bunkyoku, Tokyo 113-8656, Japan.

2. SORST (Solution-Oriented Research for Science and Technology) Interacting Carrier Electronics, Kawaguchi-shi, Saitama 331-0012, Japan.

3. Center for Nanoscale Systems, Harvard University, Cambridge, MA 02138, USA.

4. NTT Basic Research Laboratories, Atsugi-shi, Kanagawa 243-0198, Japan.

5. ICORP (International Cooperative Research Project) Quantum Spin Information Project, Atsugi-shi, Kanagawa 243-0198, Japan.

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.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference27 articles.

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