Negative Coulomb Drag in Coupled Quantum Wires

Shunsuke C. Furuya; Hiroyasu Matsuura; Masao Ogata

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arXiv · 1503.02499

Negative Coulomb Drag in Coupled Quantum Wires

Shunsuke C. Furuya·Hiroyasu Matsuura·Masao Ogata

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Abstract

We present a theory of negative Coulomb drag in capacitively coupled quantum wires based on the commensurability of the electron density and the long-range nature of the Coulomb interaction in the Tomonaga-Luttinger liquid. The commensurability introduces a notion of doped particles and holes. We point out that the long-range interaction allows a particle-hole pairing over the wires and that the particle-hole pairing brings about the positive drag of holes, that is, the negative drag.

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Shunsuke C. Furuya, Hiroyasu Matsuura, Masao Ogata. 2015-03-09. Negative Coulomb Drag in Coupled Quantum Wires. https://arxiv.org/abs/1503.02499

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