Negative Coulomb drag in a one-dimensional wire

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

doi:10.1126/science.1126601

Negative Coulomb drag in a one-dimensional wire

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

Research output: Contribution to journal › Article › peer-review

77 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 language	English
Pages (from-to)	204-207
Number of pages	4
Journal	Science
Volume	313
Issue number	5784
DOIs	https://doi.org/10.1126/science.1126601
Publication status	Published - 2006 Jul 14
Externally published	Yes

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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.",

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AU - Stopa, M.

AU - Tokura, Y.

AU - Hirayama, Y.

AU - Tarucha, S.

PY - 2006/7/14

Y1 - 2006/7/14

N2 - 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.

AB - 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.

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Negative Coulomb drag in a one-dimensional wire

Abstract

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