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원자제어 저차원 전자계 연구단
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Raman signatures of spin-phonon coupling in a self-intercalated van der Waals magnet Mn3Si2Te6

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Title
Raman signatures of spin-phonon coupling in a self-intercalated van der Waals magnet Mn3Si2Te6
Author(s)
Chang Il Kwon; Kim, Kwangrae; Kim, So Young; Susilo, Resta A.; Beomtak Kang; Kim, Kyoo; Kim, Duck Young; Jonghwan Kim; B.J. Kim; Jun Sung Kim
Publication Date
2023-09
Journal
Current Applied Physics, v.53, pp.51 - 55
Publisher
Elsevier
Abstract
We report the results of Raman spectroscopy on a self-intercalated van der Waals ferrimagnet Mn3Si2Te6. Using polarization-resolved Raman spectroscopy, we identify twelve phonon modes with Eg and A1g symmetries, in agreement with the first principle calculations. Below the ferrimagnetic transition temperature Tc∼ 78 K, we observed a significant deviation of the phonon frequency from the anharmonic model, accompanied by a strong line broadening, indicating a substantial spin-phonon coupling in Mn3Si2Te6. Among twelve phonon modes, this spin-phonon coupling is found to be strong mostly in the out-of-plane vibrational modes. These results highlight the dominant role of the interlayer superexchange interaction in determining the magnetic properties, reflecting the self-intercalated van der Waals structure of Mn3Si2Te6. © 2023 Korean Physical Society
URI
https://pr.ibs.re.kr/handle/8788114/14159
DOI
10.1016/j.cap.2023.06.005
ISSN
1567-1739
Appears in Collections:
Center for Artificial Low Dimensional Electronic Systems(원자제어 저차원 전자계 연구단) > 1. Journal Papers (저널논문)
Center for Van der Waals Quantum Solids(반데르발스 양자 물질 연구단) > 1. Journal Papers (저널논문)
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