High-Performance THz Emitters Based on Ferromagnetic/Nonmagnetic Heterostructures.

Wu, Yang; Elyasi, Mehrdad; Qiu, Xuepeng; Chen, Mengji; Liu, Yang; Ke, Lin; Yang, Hyunsoo · Adv Mater · 2017

basic_science · Level V

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Abstract

A low-cost, intense, broadband, noise resistive, magnetic field controllable, flexible, and low power driven THz emitter based on thin nonmagnetic/ferromagnetic metallic heterostructures is demonstrated. The THz emission origins from the inverse spin Hall Effect. The proposed devices are not only promising for a wide range of THz equipment, but also offer an alternative approach to characterize the spin-orbit interaction in nonmagnetic/ferromagnetic bilayers.