PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO3

Thi Minh Hien Nguyen; Xuan Nghia Nguyen; Thi Huyen Nguyen; Thi Kim Oanh Vu; Duc Huy Le; Van Minh Nguyen; In Sang Yang; Sang Wook Cheong

doi:10.1016/j.saa.2023.122753

PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO₃

Thi Minh Hien Nguyen, Xuan Nghia Nguyen, Thi Huyen Nguyen, Thi Kim Oanh Vu, Duc Huy Le, Van Minh Nguyen, In Sang Yang, Sang Wook Cheong

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Two-dimensional correlation spectroscopy (2D-COS) and perturbation-correlation moving window two-dimensional correlation spectroscopy (PCMW2D) analysis are performed on the temperature-dependent Raman spectra of hexagonal LuMnO₃ single crystal. Under the resonance with the on-site Mn d-d transitions, the correlation between the phonons which are relate to the vibration of Mn ions’ bonds and spin-excitation peaks suggest a strong spin-phonon coupling in LuMnO₃. The PCMW2D results clearly show that the significant change in phonons and spin-excitation peaks occurs around the Néel temperature and the spin reorientation transition. The multiple components in the broad spin-excitation peaks also suggest variations in spin symmetries in the ground state. Furthermore, we propose that the 2D-COS and PCMW2D Raman correlation spectroscopies provide a simple and powerful method for investigating the couplings and the transitions, which would be very important for understanding systematically the magnetoelectric properties of multiferroic materials.

Original language	English
Article number	122753
Journal	Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
Volume	297
DOIs	https://doi.org/10.1016/j.saa.2023.122753
State	Published - 5 Sep 2023

Bibliographical note

Funding Information:
This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grand number 103.02-2018.39. I-S. Y. was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A10039823). The measurements in this work were supported by Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (2020R 1A 6C 101B194). We are grateful for the use of facilities of the joint optics lab between IOP and GUST, VAST.

Publisher Copyright:
© 2023 Elsevier B.V.

Keywords

Hexagonal LuMnO
Perturbation-correlation moving window two-dimensional correlation spectroscopy
Raman scattering
Spin phonon coupling
Two-dimension correlation spectroscopy

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10.1016/j.saa.2023.122753

Cite this

Nguyen, T. M. H., Nguyen, X. N., Nguyen, T. H., Vu, T. K. O., Le, D. H., Nguyen, V. M., Yang, I. S., & Cheong, S. W. (2023). PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO₃. Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy, 297, Article 122753. https://doi.org/10.1016/j.saa.2023.122753

@article{4d12ca051ae1446ebec4a2162176457f,

title = "PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO3",

abstract = "Two-dimensional correlation spectroscopy (2D-COS) and perturbation-correlation moving window two-dimensional correlation spectroscopy (PCMW2D) analysis are performed on the temperature-dependent Raman spectra of hexagonal LuMnO3 single crystal. Under the resonance with the on-site Mn d-d transitions, the correlation between the phonons which are relate to the vibration of Mn ions{\textquoteright} bonds and spin-excitation peaks suggest a strong spin-phonon coupling in LuMnO3. The PCMW2D results clearly show that the significant change in phonons and spin-excitation peaks occurs around the N{\'e}el temperature and the spin reorientation transition. The multiple components in the broad spin-excitation peaks also suggest variations in spin symmetries in the ground state. Furthermore, we propose that the 2D-COS and PCMW2D Raman correlation spectroscopies provide a simple and powerful method for investigating the couplings and the transitions, which would be very important for understanding systematically the magnetoelectric properties of multiferroic materials.",

keywords = "Hexagonal LuMnO, Perturbation-correlation moving window two-dimensional correlation spectroscopy, Raman scattering, Spin phonon coupling, Two-dimension correlation spectroscopy",

author = "Nguyen, {Thi Minh Hien} and Nguyen, {Xuan Nghia} and Nguyen, {Thi Huyen} and Vu, {Thi Kim Oanh} and Le, {Duc Huy} and Nguyen, {Van Minh} and Yang, {In Sang} and Cheong, {Sang Wook}",

note = "Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grand number 103.02-2018.39. I-S. Y. was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A10039823). The measurements in this work were supported by Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (2020R 1A 6C 101B194). We are grateful for the use of facilities of the joint optics lab between IOP and GUST, VAST. Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

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T1 - PCMW2D and 2D Raman correlation spectroscopy evidence for presence of spin-phonon coupling in hexagonal LuMnO3

AU - Nguyen, Thi Minh Hien

AU - Nguyen, Xuan Nghia

AU - Nguyen, Thi Huyen

AU - Vu, Thi Kim Oanh

AU - Le, Duc Huy

AU - Nguyen, Van Minh

AU - Yang, In Sang

AU - Cheong, Sang Wook

N1 - Funding Information: This research is funded by Vietnam National Foundation for Science and Technology Development (NAFOSTED) under grand number 103.02-2018.39. I-S. Y. was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2021R1A6A1A10039823). The measurements in this work were supported by Korea Basic Science Institute (National Research Facilities and Equipment Center) grant funded by the Ministry of Education (2020R 1A 6C 101B194). We are grateful for the use of facilities of the joint optics lab between IOP and GUST, VAST. Publisher Copyright: © 2023 Elsevier B.V.

PY - 2023/9/5

Y1 - 2023/9/5

N2 - Two-dimensional correlation spectroscopy (2D-COS) and perturbation-correlation moving window two-dimensional correlation spectroscopy (PCMW2D) analysis are performed on the temperature-dependent Raman spectra of hexagonal LuMnO3 single crystal. Under the resonance with the on-site Mn d-d transitions, the correlation between the phonons which are relate to the vibration of Mn ions’ bonds and spin-excitation peaks suggest a strong spin-phonon coupling in LuMnO3. The PCMW2D results clearly show that the significant change in phonons and spin-excitation peaks occurs around the Néel temperature and the spin reorientation transition. The multiple components in the broad spin-excitation peaks also suggest variations in spin symmetries in the ground state. Furthermore, we propose that the 2D-COS and PCMW2D Raman correlation spectroscopies provide a simple and powerful method for investigating the couplings and the transitions, which would be very important for understanding systematically the magnetoelectric properties of multiferroic materials.

AB - Two-dimensional correlation spectroscopy (2D-COS) and perturbation-correlation moving window two-dimensional correlation spectroscopy (PCMW2D) analysis are performed on the temperature-dependent Raman spectra of hexagonal LuMnO3 single crystal. Under the resonance with the on-site Mn d-d transitions, the correlation between the phonons which are relate to the vibration of Mn ions’ bonds and spin-excitation peaks suggest a strong spin-phonon coupling in LuMnO3. The PCMW2D results clearly show that the significant change in phonons and spin-excitation peaks occurs around the Néel temperature and the spin reorientation transition. The multiple components in the broad spin-excitation peaks also suggest variations in spin symmetries in the ground state. Furthermore, we propose that the 2D-COS and PCMW2D Raman correlation spectroscopies provide a simple and powerful method for investigating the couplings and the transitions, which would be very important for understanding systematically the magnetoelectric properties of multiferroic materials.

KW - Hexagonal LuMnO

KW - Perturbation-correlation moving window two-dimensional correlation spectroscopy

KW - Raman scattering

KW - Spin phonon coupling

KW - Two-dimension correlation spectroscopy

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