Coherent control of asymmetric spintronic terahertz emission from two-dimensional hybrid metal halides.

ABSTRACT: Next-generation terahertz (THz) sources demand lightweight, low-cost, defect-tolerant, and robust components with synergistic, tunable capabilities. However, a paucity of materials systems simultaneously possessing these desirable attributes and functionalities has made device realization difficult. Here we report the observation of asymmetric spintronic-THz radiation in Two-Dimensional Hybrid Metal Halides (2D-HMH) interfaced with a ferromagnetic metal, produced by ultrafast spin current under femtosecond laser excitation. The generated THz radiation exhibits an asymmetric intensity toward forward and backward emission direction whose directionality can be mutually controlled by the direction of applied magnetic field and linear polarization of the laser pulse. Our work demonstrates the c

SUBMITTER: Cong K 

PROVIDER: S-EPMC8484356 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature