Spintronic terahertz emission from Ni/Pt, Ni/Au, and Ni/Ti bilayer films grown on MgO via electron beam deposition

Authors

  • Lourdes Nicole F. Dela Rosa National Institute of Physics, University of the Philippines Diliman
  • Hannah R. Bardolaza National Institute of Physics, University of the Philippines Diliman
  • Neil Irvin F. Cabello National Institute of Physics, University of the Philippines Diliman
  • John Paul R. Ferrolino Materials Science and Engineering Program, University of the Philippines Diliman
  • Vince Paul P. Juguilon National Institute of Physics, University of the Philippines Diliman
  • Ivan Cedrick M. Verona National Institute of Physics, University of the Philippines Diliman
  • Armando S. Somintac National Institute of Physics, University of the Philippines Diliman
  • Arnel A. Salvador National Institute of Physics, University of the Philippines Diliman
  • Alexander E. De Los Reyes National Institute of Physics, University of the Philippines Diliman
  • Elmer S. Estacio National Institute of Physics, University of the Philippines Diliman

Abstract

We report on the growth and terahertz (THz) spintronic emission of bilayer thin films consisting of ferromagnetic/nonmagnetic (FM/NM) metals. The FM metal used is Ni, while the the NM metals used are Pt, Au and Ti. The bilayer films were grown using electron beam deposition on MgO substrates, with nominal FM/NM layer thickness of 7 nm/6 nm. With an applied magnetic field of 20 mT, the THz spintronic emission intensities from the samples were measured using THz time-domain spectroscopy. The relative THz intensities exhibited by the different bilayer films (ETHzNi/Pt  > ETHzNi/Au  > ETHzNi/Ti) may be explained by the spin-Hall angles of the nonmagnetic metals affecting the spintronic THz emission efficiency.

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Published

2022-10-18

Issue

2022: Proceedings of the 40th Samahang Pisika ng Pilipinas Physics Conference

Section

Poster Session A (Materials Science, Instrumentation, and Photonics)

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How to Cite

[1]
“Spintronic terahertz emission from Ni/Pt, Ni/Au, and Ni/Ti bilayer films grown on MgO via electron beam deposition”, Proc. SPP, vol. 40, no. 1, p. SPP-2022-PA-19, Oct. 2022, Accessed: Mar. 30, 2026. [Online]. Available: https://proceedings.spp-online.org/article/view/SPP-2022-PA-19