Issue 26, 2016
From the journal:

Nanoscale

Terahertz spin-wave waveguides and optical magnonics in one-dimensional NiO nanorods†

Ranjit A. Patil,a   Chiung-Wu Su,b   Chin-Jung Chuang,c   Chien-Chih Lai,a   Yung Lioud  and  Yuan-Ron Ma*a  

* Corresponding authors

a Department of Physics, National Dong Hwa University, Hualien 97401, Taiwan
E-mail: ronma@mail.ndhu.edu.tw

b Department of Electrophysics, National Chiayi University, Chiayi 60004, Taiwan

c Department of Opto-Electronic Engineering, National Dong Hwa University, Hualien, 97401, Taiwan

d Institute of Physics, Academia Sinica, Taipei 11529, Taiwan

Abstract

The two-magnon (2M) spin waves with a magnon frequency of 43 THz, generated by a polarized laser, were first observed in one-dimensional (1D) NiO nanorods. The 1D NiO nanorods of ∼700 nm length, which have perfectly in-plane antiferromagnetic spins lying on the (200) and (100) faces, are the smallest spin-wave waveguides. Due to the magneto-optical Faraday effect (MOFE), the significant change in the Faraday intensity can show the 2M information in the NiO nanorods. There are only two 2M-on and 2M-off states at various applied alternating-current magnetic fields and laser-incident angles, which make the 1D NiO nanorods excellent optical nanomagnonics.

Graphical abstract: Terahertz spin-wave waveguides and optical magnonics in one-dimensional NiO nanorods

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Article information

DOI
https://doi.org/10.1039/C6NR02531E
Article type
Paper
Submitted
27 Mar 2016
Accepted
29 May 2016
First published
31 May 2016

Nanoscale, 2016,8, 12970-12976

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Terahertz spin-wave waveguides and optical magnonics in one-dimensional NiO nanorods

R. A. Patil, C. Su, C. Chuang, C. Lai, Y. Liou and Y. Ma, Nanoscale, 2016, 8, 12970 DOI: 10.1039/C6NR02531E

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