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Title: Phonon anomalies in FeS

Abstract

Here, we present results from light scattering experiments on tetragonal FeS with the focus placed on lattice dynamics. We identify the Raman active A1g and B1g phonon modes, a second order scattering process involving two acoustic phonons, and contributions from potentially defect-induced scattering. The temperature dependence between 300 and 20 K of all observed phonon energies is governed by the lattice contraction. Below 20 K the phonon energies increase by 0.5–1 cm-1 , thus indicating putative short range magnetic order. Additionally, along with the experiments we performed lattice-dynamical simulations and a symmetry analysis for the phonons and potential overtones and find good agreement with the experiments. In particular, we argue that the two-phonon excitation observed in a gap between the optical branches becomes observable due to significant electron-phonon interaction.

Authors:
 [1];  [2];  [2];  [3];  [4];  [1];  [5];  [2];  [2];  [6];  [5];  [7];  [7];  [8];  [5]
  1. Walther Meissner Institut, Bayerische Akademie der Wissenschaften, Garching (Germany); Technische Universität München, Garching (Germany). Fakultät für Physik
  2. University of Belgrade (Serbia). Center for Solid State Physics and New Materials, Institute of Physics Belgrade
  3. University of Belgrade (Serbia). Scientific Computing Laboratory, Center for the Study of Complex Systems, Institute of Physics Belgrade
  4. University of Belgrade (Serbia). Faculty of Physics
  5. Walther Meissner Institut, Bayerische Akademie der Wissenschaften, Garching (Germany)
  6. University of Belgrade (Serbia). Center for Solid State Physics and New Materials, Institute of Physics Belgrade; University of Wisconsin, Oshkosh, WI (United States)
  7. Brookhaven National Lab. (BNL), Upton, NY (United States). Condensed Matter Physics and Materials Science Department
  8. University of Belgrade (Serbia). Center for Solid State Physics and New Materials, Institute of Physics Belgrade; Serbian Academy of Sciences and Arts, Belgrade (Serbia)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Energy Frontier Research Centers (EFRC) (United States). Center for Emergent Superconductivity (CES)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
OSTI Identifier:
1430875
Alternate Identifier(s):
OSTI ID: 1420200
Report Number(s):
BNL-203431-2018-JAAM
Journal ID: ISSN 2469-9950; PRBMDO; TRN: US1802628
Grant/Contract Number:  
SC0012704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 97; Journal Issue: 5; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Baum, A., Milosavljevic, A., Lazarevic, N., Radonjic, M. M., Nikolic, B., Mitschek, M., Maranloo, Z. Inanloo, Scepanovic, M., Grujic-Brojcin, M., Stojilovic, N., Opel, M., Wang, Aifeng, Petrovic, C., Popovic, Z. V., and Hackl, R. Phonon anomalies in FeS. United States: N. p., 2018. Web. doi:10.1103/PhysRevB.97.054306.
Baum, A., Milosavljevic, A., Lazarevic, N., Radonjic, M. M., Nikolic, B., Mitschek, M., Maranloo, Z. Inanloo, Scepanovic, M., Grujic-Brojcin, M., Stojilovic, N., Opel, M., Wang, Aifeng, Petrovic, C., Popovic, Z. V., & Hackl, R. Phonon anomalies in FeS. United States. https://doi.org/10.1103/PhysRevB.97.054306
Baum, A., Milosavljevic, A., Lazarevic, N., Radonjic, M. M., Nikolic, B., Mitschek, M., Maranloo, Z. Inanloo, Scepanovic, M., Grujic-Brojcin, M., Stojilovic, N., Opel, M., Wang, Aifeng, Petrovic, C., Popovic, Z. V., and Hackl, R. 2018. "Phonon anomalies in FeS". United States. https://doi.org/10.1103/PhysRevB.97.054306. https://www.osti.gov/servlets/purl/1430875.
@article{osti_1430875,
title = {Phonon anomalies in FeS},
author = {Baum, A. and Milosavljevic, A. and Lazarevic, N. and Radonjic, M. M. and Nikolic, B. and Mitschek, M. and Maranloo, Z. Inanloo and Scepanovic, M. and Grujic-Brojcin, M. and Stojilovic, N. and Opel, M. and Wang, Aifeng and Petrovic, C. and Popovic, Z. V. and Hackl, R.},
abstractNote = {Here, we present results from light scattering experiments on tetragonal FeS with the focus placed on lattice dynamics. We identify the Raman active A1g and B1g phonon modes, a second order scattering process involving two acoustic phonons, and contributions from potentially defect-induced scattering. The temperature dependence between 300 and 20 K of all observed phonon energies is governed by the lattice contraction. Below 20 K the phonon energies increase by 0.5–1 cm-1 , thus indicating putative short range magnetic order. Additionally, along with the experiments we performed lattice-dynamical simulations and a symmetry analysis for the phonons and potential overtones and find good agreement with the experiments. In particular, we argue that the two-phonon excitation observed in a gap between the optical branches becomes observable due to significant electron-phonon interaction.},
doi = {10.1103/PhysRevB.97.054306},
url = {https://www.osti.gov/biblio/1430875}, journal = {Physical Review B},
issn = {2469-9950},
number = 5,
volume = 97,
place = {United States},
year = {Mon Feb 12 00:00:00 EST 2018},
month = {Mon Feb 12 00:00:00 EST 2018}
}

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Cited by: 17 works
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Works referencing / citing this record:

Temperature-Dependent Raman Study of Nanostructured and Multifunctional Materials
journal, March 2019