Localized spin-flip excitations in hexagonal HoMnO3
- Authors
- Nam, Ji-Yeon; Kim, Seung; Hien Thi Minh Nguyen; Chen, Xiang-Bai; Choi, Mahn-Soo; Lee, Daesu; Noh, T. W.; Yang, In-Sang
- Issue Date
- 11월-2020
- Publisher
- WILEY
- Keywords
- hexagonal HoMnO3; multiferroics; resonance Raman spectroscopy; spin-flip excitations; spin-frustrated triangular network
- Citation
- JOURNAL OF RAMAN SPECTROSCOPY, v.51, no.11, pp.2298 - 2304
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF RAMAN SPECTROSCOPY
- Volume
- 51
- Number
- 11
- Start Page
- 2298
- End Page
- 2304
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/51933
- DOI
- 10.1002/jrs.5969
- ISSN
- 0377-0486
- Abstract
- 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.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Science > Department of Physics > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.