Two-Dimensional Photogalvanic Spin-Battery

Abstract

Pure spin-current is of central importance in spintronics. Here we propose a two-dimensional (2D) spin-battery system that delivers pure spin-current without an accompanying charge-current to the outside world at zero bias. The principle of the spin-battery roots in the photogalvanic effect (PGE), and the system has good operational stability against structural perturbation, photon energy and other materials detail. The device principle is numerically implemented in the 2D material phosphorene as an example, and first principles calculations give excellent qualitative agreement with the PGE physics. The 2D spin-battery is interesting as it is both a device that generates pure spin-currents, also an energy source that harvests photons. Given the versatile operational space, the spin-battery should be experimentally feasible.

10 pages, 7 figures

References in corpus (27)

• Spintronics: Fundamentals and applications
• Black phosphorus field-effect transistors
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• Thermally driven spin and charge currents in thin NiFe2O4/Pt films
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Cited by in corpus (10)

• Multifunctional Lateral Transition-Metal Disulfides Heterojunctions
• Entanglement and work extraction in the central-spin quantum battery
• Unveiling the Electric-current-limiting and Photodetection Effect in Two-dimensional Hydrogenated Borophene
• High-capacity and high-power collective charging with spin chargers
• Enhanced photogalvanic effect in the two-dimensional MgCl${}_2$/ZnBr${}_2$ vertical heterojunction by inhomogenous tensile stress
• Enhancing the charging performance of an atomic quantum battery
• Giant anisotropic photocurrent modulated by strain in type-II Weyl semimetal Td-MoTe2
• High-efficiency photoelectric detector based on a p-n homojunction of monolayer black phosphorus
• Largely enhanced photogalvanic effects in the phosphorene photodetector by strain-increased device asymmetry
• The limits of rechargeable spin battery