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강상관계 물질 연구단
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Localized spin-flip excitations in hexagonal HoMnO3

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Title
Localized spin-flip excitations in hexagonal HoMnO3
Author(s)
Ji-Yeon Nam; Seung Kim; Hien Thi Minh Nguyen; Xiang-Bai Chen; Mahn-Soo Choi; Daesu Lee; Tae Won Noh; In-Sang Yang
Subject
hexagonal HoMnO3, ; multiferroics, ; resonance Raman spectroscopy, ; spin-flip excitations, ; spin-frustrated triangular network
Publication Date
2020-11
Journal
JOURNAL OF RAMAN SPECTROSCOPY, v.51, no.11, pp.2298 - 2304
Publisher
WILEY
Abstract
© 2020 John Wiley & Sons, Ltd. Growing demands for ultra-fast switching of spins have turned attention to optically controlled spintronics, which indeed has recently been demonstrated promising. Here we report localized spin-flip excitations revealed by resonance inelastic light scattering on hexagonal holmium manganite thin films with the magnetic manganese ions substituted by the nonmagnetic gallium ions (HoMn1 -xGaxO3). Our analyses on a broad Raman peak support that the corresponding spin excitation is associated with flipping of all three Mn(3+)spins in the elementary trimer of manganese ions and hence maintains the same excitation energy determined by the intrinsic spin-spin interaction between Mn(3+)ions. The nonmagnetic gallium ions only reduce the population of the spin excitations by breaking the spin-frustrated triangular network. Such localized spin-flip excitations show another promise towards optically controlled spin devices
URI
https://pr.ibs.re.kr/handle/8788114/7571
DOI
10.1002/jrs.5969
ISSN
0377-0486
Appears in Collections:
Center for Correlated Electron Systems(강상관계 물질 연구단) > 1. Journal Papers (저널논문)
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