Article (Scientific journals)
Lattice dynamics and in-plane antiferromagnetism in MnxZn1-xPS3 across the entire composition range
Oliva, Robert; Ritov, Esther; Horani, Faris et al.
2023In Physical Review. B, 107 (10)
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Keywords :
Composition ranges; High frequency phonons; Lower frequencies; Magnetic phase diagrams; Magnetic transitions; Phonon mode; Raman signatures; Spin-phonon coupling; Electronic, Optical and Magnetic Materials; Condensed Matter Physics
Abstract :
[en] Alloyed MnxZn1-xPS3 samples have been grown covering the whole compositional range and studied by means of Raman spectroscopy at temperatures from 4 to 850 K. Our results, supported by superconducting quantum interference device magnetic measurements, allowed us, on one hand, to complete the magnetic phase diagram of MnxZn1-xPS3 and establish x≥0.3 as the composition at which the alloy retains antiferromagnetism and, on the other hand, to identify the Raman signatures indicative of a magnetic transition. The origin of these Raman signatures is discussed in terms of spin-phonon coupling, resulting in the appearance of low- and high-frequency phonon modes. For the alloy, an assignation of the first- and second-order modes is provided with the aid of first-principles lattice-dynamical calculations. The compositional dependence of all phonon modes is described, and the presence of zone-folded modes is shown to take place for the alloy. Finally, a comparison of the Raman spectra of ZnPS3 to other compounds of the transition metal phosphorus trisulfide family allowed us to conclude that low-frequency phonon peaks exhibit an abnormally large broadening. This is consistent with previous claims on the occurrence of a second-order Jahn-Teller effect that takes place for ZnPS3 and Zn-rich MnxZn1-xPS3.
Disciplines :
Physics
Author, co-author :
Oliva, Robert ;  Department of Physics and Materials Science, University of Luxembourg, Belvaux, Luxembourg ; Geosciences Barcelona (geo3bcn-CSIC), Barcelona, Spain
Ritov, Esther;  Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Center, Nancy and Stephen Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa, Israel
Horani, Faris;  Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Center, Nancy and Stephen Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa, Israel
Etxebarria, Iñigo;  Fisika Saila and EHU Quantum Center, Euskal Herriko Unibertsitatea UPV/EHU, Leioa, Spain
Budniak, Adam K.;  Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Center, Nancy and Stephen Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa, Israel
Amouyal, Yaron;  Department of Materials Science and Engineering, Technion-Israel Institute of Technology, Haifa, Israel
Lifshitz, Efrat;  Schulich Faculty of Chemistry, Solid State Institute, Russell Berrie Nanotechnology Institute, Helen Diller Quantum Center, Nancy and Stephen Grand Technion Energy Program, Technion-Israel Institute of Technology, Haifa, Israel
GUENNOU, Mael  ;  University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
External co-authors :
yes
Language :
English
Title :
Lattice dynamics and in-plane antiferromagnetism in MnxZn1-xPS3 across the entire composition range
Publication date :
March 2023
Journal title :
Physical Review. B
ISSN :
2469-9950
eISSN :
2469-9969
Publisher :
American Physical Society
Volume :
107
Issue :
10
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Ministerio de Ciencia e Innovación
Funding text :
F.H., E.R., and E.L. acknowledge the contribution of the QMR center and Dr. Anna Eyal for performing the SQUID measurements. The authors would like to thank Prof. Francisco Javier Zúñiga Lagares for his contribution to XRD measurements on the samples studied here. I.E. acknowledges the financial support of the “Ministerio de Ciencia e Innovación” (No. PID2019-106644GB-I00) and the Basque Country Government (No. IT1458-22). A.K.B. and E.L. were supported by the European Commission via the Marie Skłodowska-Curie action Phonsi (No. H2020-MSCA-ITN-642656).
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