Das, Ankur ; Rao, Sumathi ; Gefen, Yuval ; Murthy, Ganpathy (2021) Dc Electrical Current Generated by Upstream Neutral Modes Arxiv Publications.
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Official URL: https://arxiv.org/abs/2103.06200v3
Abstract
Quantum Hall phases are gapped in the bulk but support chiral edge modes, both charged and neutral. Here we consider a circuit where the path from the source of electric current to the drain necessarily passes through a segment consisting solely of neutral modes. Surprisingly, we find that upon biasing the source, a dc electric current is detected at the drain. Thus, neutral modes carry information that can be used to nonlocally reconstruct a dc charge current. Our protocol can be used to detect neutral modes, not only the edge modes of a quantum Hall system, but also those that have a non-quantum Hall origin. We conclude with a possible experimental realization of this phenomenon.
Item Type: | Other |
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Source: | Copyright of this article belongs to Arxiv Publications. |
ID Code: | 124249 |
Deposited On: | 10 Nov 2021 07:57 |
Last Modified: | 10 Nov 2021 07:57 |
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