- Physical Review Journals
All JournalsPhysics Magazine

Physical Review B

Export citation

Export citation

Choose format for download:

Download Citation
  • Letter

Magnetization-induced optical rectification and inverse spin Hall effect for interfacial terahertz generation in metallic heterostructures

Zehan Yao1,2, Huarui Fu3, Wanyi Du1, Yuanyuan Huang1,*, Zhen Lei1, Caiyin You3,†, and Xinlong Xu1,‡

  • 1Shaanxi Joint Lab of Graphene, State Key Laboratory of Western Energy Photonics Technology, International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Institute of Photonics & Photon-Technology, Northwest University, Xi'an 710069, China
  • 2Division of Chemical Physics, Department of Chemistry, Lund University, Box 124, SE-22100 Lund, Sweden
  • 3School of Materials Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

  • *yyhuang@nwu.edu.cn
  • †caiyinyou@xaut.edu.cn
  • ‡xlxuphy@nwu.edu.cn
PDF

Phys. Rev. B 103, L201404 – Published 19 May, 2021

DOI: https://doi.org/10.1103/PhysRevB.103.L201404

Abstract

Metallic heterostructure as promising terahertz (THz) spintronic emitters has promoted the development of both spintronics and THz science. However, the underlying physics at the metallic interface, such as the nonlinear optical effect, remains unclear. Herein, we present interface magnetization induced THz generation from metallic heterostructure consisting of Heusler alloy CoFeMnSi (CFMS) and Pd thin films. THz generation is ascribed to 35% contribution from the magnetization-induced optical rectification (MOR) and 65% contribution from inverse spin Hall effect (ISHE) based on the pump polarization and sample azimuthal angle dependent measurement. Furthermore, the contribution ratio of the MOR decreases to 12% via lowering the CFMS grown temperature, which is due to the reduced crystalline quality and possible metal to semiconductor transformation in CFMS. Our results not only clarify MOR and ISHE in metallic heterostructure for the scientific field, but they also benefit THz source optimization for the technology field.

View figure in article

Physics Subject Headings (PhySH)

Authorization Required

We need you to provide your credentials before accessing this content.

Other Options

References (Subscription Required)

Outline

Information

Phys. Rev. B 103, L201404– Published 19 May, 2021
  • Received 20 March 2021
  • Revised 5 May 2021
  • Accepted 6 May 2021
Crossmark - Check for updates button

©2021 American Physical Society

Sign In to Your Journals Account

Filter

Filter

Article Lookup

Enter a citation