View : 157 Download: 0

Localized spin-flip excitations in hexagonal HoMnO3

Title
Localized spin-flip excitations in hexagonal HoMnO3
Authors
Nam, Ji-YeonKim, SeungHien Thi Minh NguyenChen, Xiang-BaiChoi, Mahn-SooLee, DaesuNoh, T. W.Yang, In-Sang
Ewha Authors
양인상
SCOPUS Author ID
양인상scopus
Issue Date
2020
Journal Title
JOURNAL OF RAMAN SPECTROSCOPY
ISSN
0377-0486JCR Link

1097-4555JCR Link
Citation
JOURNAL OF RAMAN SPECTROSCOPY vol. 51, no. 11, pp. 2298 - 2304
Keywords
hexagonal HoMnO3multiferroicsresonance Raman spectroscopyspin-flip excitationsspin-frustrated triangular network
Publisher
WILEY
Indexed
SCIE; SCOPUS WOS scopus
Document Type
Article
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.
Show the fulltext
DOI
10.1002/jrs.5969
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE