Nonreciprocal electrical transport in linear systems with balanced gain and loss in the bulk

Bag, Rupak; Roy, Dibyendu

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/8374

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DC Field	Value	Language
dc.contributor.author	Bag, Rupak	-
dc.contributor.author	Roy, Dibyendu	-
dc.date.accessioned	2025-02-11T06:38:50Z	-
dc.date.available	2025-02-11T06:38:50Z	-
dc.date.issued	2025-02-10	-
dc.identifier.citation	Physical Review B, 2025, Vol. 111, p064309	en_US
dc.identifier.uri	http://hdl.handle.net/2289/8374	-
dc.description	Open Access	en_US
dc.description.abstract	We investigate electrical transport in a quantum wire of 𝑁 sites connected to an equal number (𝑁𝑖/2) of sources and drains of charges in bulk. Each source and drain injects and extracts charges at the same rate, respectively. We show that the linear-response electrical current is nonreciprocal in such a system when the arrangement of sources and drains breaks the system's parity. We prove that inelastic scattering is essential for nonreciprocity in this system. For this, we invoke a master equation description of classical charge transport in a similar system. The nonreciprocal current in quantum wire matches that in the classical model for 𝑁𝑖/𝑁∼1, generating a finite scattering length much smaller than the length of the wire. The nonreciprocity in the quantum wire oscillates with wire length when 𝑁𝑖/𝑁≪1, and it can vanish at specific lengths.	en_US
dc.language.iso	en	en_US
dc.publisher	American Physical Society	en_US
dc.relation.uri	https://arxiv.org/abs/2409.12510	en_US
dc.relation.uri	https://doi.org/10.1103/PhysRevB.111.064309	en_US
dc.rights	2025 American Physical Society	en_US
dc.title	Nonreciprocal electrical transport in linear systems with balanced gain and loss in the bulk	en_US
dc.type	Article	en_US
Appears in Collections:	Research Papers (TP)

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