Transverse thermophotovoltaics from nonreciprocal plasmon drag in metal

Fuente: arXiv
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Autores principales: He, Dingwei, Tang, Gaomin
Formato: Preprint
Publicado: 2026
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author He, Dingwei
Tang, Gaomin
author_facet He, Dingwei
Tang, Gaomin
contents Transverse thermophotovoltaics has been conceptually proposed as a paradigm distinct from conventional junction-based photovoltaics, but has so far lacked a theoretical foundation. In this Letter, we establish a microscopic formalism of this effect in which a transverse electric current emerges in a two-dimensional metal sheet via nonreciprocal surface plasmon polaritons driven by near-field thermal radiation. This theoretical formalism incorporates the electron-photon interaction by integrating electronic transition factor governed by energy-momentum conservation, the photon flux factor encoding the nonreciprocal surface modes, and their directional coupling. Our approach quantitatively confirms the plasmon-drag mechanism and reveals the role of impurity scattering. This work provides a rigorous theoretical foundation for transverse thermophotovoltaic devices and opens avenues for active nanoscale thermal energy conversion.
format Preprint
id arxiv_https___arxiv_org_abs_2604_20068
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Transverse thermophotovoltaics from nonreciprocal plasmon drag in metal
He, Dingwei
Tang, Gaomin
Mesoscale and Nanoscale Physics
Optics
Transverse thermophotovoltaics has been conceptually proposed as a paradigm distinct from conventional junction-based photovoltaics, but has so far lacked a theoretical foundation. In this Letter, we establish a microscopic formalism of this effect in which a transverse electric current emerges in a two-dimensional metal sheet via nonreciprocal surface plasmon polaritons driven by near-field thermal radiation. This theoretical formalism incorporates the electron-photon interaction by integrating electronic transition factor governed by energy-momentum conservation, the photon flux factor encoding the nonreciprocal surface modes, and their directional coupling. Our approach quantitatively confirms the plasmon-drag mechanism and reveals the role of impurity scattering. This work provides a rigorous theoretical foundation for transverse thermophotovoltaic devices and opens avenues for active nanoscale thermal energy conversion.
title Transverse thermophotovoltaics from nonreciprocal plasmon drag in metal
topic Mesoscale and Nanoscale Physics
Optics
url https://arxiv.org/abs/2604.20068