Ni/Pt spintronic emitters as potential reliable THz source

Authors

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