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| Título: | Spin-phonon coupling in epitaxial Sr0.6Ba0.4MnO3 thin films |
Autor: | Goian, V.; Langenberg, Eric CSIC ORCID; Marcano, N. CSIC ORCID; Bovtun, V.; Maurel, Laura; Kempa, M.; Prokscha, Thomas; Algarabel, Pedro A. CSIC ORCID; Pardo, J. A. CSIC ORCID; Kamba, S. | Fecha de publicación: | 2017 | Editor: | American Physical Society | Citación: | Physical Review B 95(7): 075126 (2017) | Resumen: | Spin-phonon coupling is investigated in epitaxially strained Sr1-xBaxMnO3 thin films with perovskite structure by means of microwave (MW) and infrared (IR) spectroscopy. In this work we focus on the Sr0.6Ba0.4MnO3 composition grown on (LaAlO3)0.3(Sr2AlTaO6)0.7 substrate. The MW complex electromagnetic response shows a decrease in the real part and a clear anomaly in the imaginary part around 150 K. Moreover, it coincides with a 17% hardening of the lowest-frequency polar phonon seen in IR reflectance spectra. In order to further elucidate this phenomenon, low-energy muon-spin spectroscopy was carried out, signaling the emergence of antiferromagnetic order with Néel temperature (TN) around 150 K. Thus, our results confirm that epitaxial Sr0.6Ba0.4MnO3 thin films display strong spin-phonon coupling below TN, which may stimulate further research on tuning the magnetoelectric coupling by controlling the epitaxial strain and chemical pressure in the Sr1-xBaxMnO3 system. | Descripción: | Under the terms of the Creative Commons Attribution license.-- et al. | Versión del editor: | https://doi.org/10.1103/PhysRevB.95.075126 | URI: | http://hdl.handle.net/10261/148733 | DOI: | 10.1103/PhysRevB.95.075126 | Identificadores: | doi: 10.1103/PhysRevB.95.075126 issn: 2469-9950 e-issn: 2469-9969 |
| Aparece en las colecciones: | (ICMA) Artículos |
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| spin-phonon.pdf | 1,12 MB | Adobe PDF |  Visualizar/Abrir |
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