Ni/Pt spintronic emitters as potential reliable THz source

Authors

John Paul Ferrolino ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Neil Irvin Cabello ⋅ PH National Institute of Physics, University of the Philippines Diliman
Alexander De Los Reyes ⋅ PH National Institute of Physics, University of the Philippines Diliman
Hannah Bardolaza ⋅ PH National Institute of Physics, University of the Philippines Diliman
Ivan Cedrick Verona ⋅ PH National Institute of Physics, University of the Philippines Diliman
Valynn Katrine Mag-usara ⋅ JP Research Center for Development of Far-Infrared Region, University of Fukui, Japan
Jessica Afalla ⋅ JP Faculty of Pure and Applied Sciences, University of Tsukuba, Japan
Miezel Talara ⋅ JP Research Center for Development of Far-Infrared Region, University of Fukui, Japan
Hideaki Kitahara ⋅ JP Research Center for Development of Far-Infrared Region, University of Fukui, Japan
Wilson Garcia ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman
Arnel Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Masahiko Tani ⋅ JP Research Center for Development of Far-Infrared Region, University of Fukui, Japan
Elmer Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

This work presents an evaluation of the capabilities of Ni/Pt spintronic emitter as terahertz (THz) emitters for possible future applications. The Ni/Pt structure is grown on a MgO substrate using an electron beam deposition facility. The THz emission from the spintronic Ni/Pt emitter is obtained by utilizing a THz time-domain spectroscopy system. The results are evaluated by comparing to the THz emission from known sources such as p-InAs and commercial butterfly photoconductive antenna. The Ni/Pt emitter has THz signal amplitude 2-3 orders of magnitude smaller compared to the other two THz sources. The detected bandwidth, however, is larger with a value of ~2.08 THz. The frequency at peak amplitude is also larger for the Ni/Pt emitter at 0.893 THz.

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Issue

2021: Proceedings of the 39th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2021-3E-02

Section

Atomic, Molecular, and Optical Physics

Published

2021-10-07

How to Cite

[1]

JP Ferrolino, NI Cabello, A De Los Reyes, H Bardolaza, IC Verona, VK Mag-usara, J Afalla, M Talara, H Kitahara, W Garcia, A Somintac, A Salvador, M Tani, and E Estacio, Ni/Pt spintronic emitters as potential reliable THz source, Proceedings of the Samahang Pisika ng Pilipinas 39, SPP-2021-3E-02 (2021). URL: https://proceedings.spp-online.org/article/view/SPP-2021-3E-02.