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Journal articles
Driving Spin Excitations by Hydrostatic Pressure in BiFeO3
J. Buhot
1
C. Toulouse
1
Y. Gallais
1
A. Sacuto
1
R. de Sousa
2
D. Wang
3
L. Bellaiche
4, 5
M. Bibes
6
Alain Barthélémy
6
A. Forget
7
D. Colson
7
M. Cazayous
1
M-A. Measson
1
7
LNO - Laboratoire Nano-Magnétisme et Oxydes
SPEC - UMR3680 - Service de physique de l'état condensé, IRAMIS - Institut Rayonnement Matière de Saclay
R. de Sousa 2
Author
D. Wang 3
Author
L. Bellaiche 4, 5
Author
M. Bibes 6
Mail :
Author IdHAL : manuelbibes arXiv : https://arxiv.org/a/manuel.bibes ORCID : https://orcid.org/0000-0002-6704-3422
Alain Barthélémy 6
Mail :
Author Employer institution : Photonique Fibre et Sources Cohérentes IdHAL : alain-barthelemy-limoges ORCID : https://orcid.org/0000-0002-8589-3842
A. Forget 7
Author
D. Colson 7
Author
M. Cazayous 1
Author
M-A. Measson 1
Mail :
Author IdHAL : measson ResearcherId : http://www.researcherid.com/rid/E-6388-2015 ORCID : https://orcid.org/0000-0002-6495-7376
1
MPQ (UMR_7162) - Laboratoire Matériaux et Phénomènes Quantiques (Université Paris Diderot, Bât. Condorcet , 10 rue Alice Domon et Leonie Duquet, Case 7021, 75205 Paris cedex 13 - France)
- UPD7 - Université Paris Diderot - Paris 7 : UMR_7162 (5 rue Thomas-Mann - 75205 Paris cedex 13 - France)
- CNRS - Centre National de la Recherche Scientifique : UMR_7162 (France)
2
UVIC - University of Victoria [Canada] (University of Victoria
3800 Finnerty Road
Victoria BC V8P 5C2
Canada - Canada)
3
Xjtu - Xi'an Jiaotong University (28 Xianning W Rd, JiaoDa ShangYe JieQu, Beilin Qu, Xian Shi, Shaanxi Sheng - China)
4
Department Physics (Fayetteville, Arkansas - United States)
- University of Arkansas [Fayetteville] (1 University of Arkansas, Fayetteville, AR 72701 - United States)
5
Institute for nanosciences and engineering and physics departement (University of Arkansas Fayetteville Arkansas 72701 - United States)
- University of Arkansas [Fayetteville] (1 University of Arkansas, Fayetteville, AR 72701 - United States)
6
UMPhy CNRS/THALES - Unité mixte de physique CNRS/Thales ( 1 avenue Augustin Fresnel, 91767 Palaiseau Cedex, France - France)
- THALES (France)
- CNRS - Centre National de la Recherche Scientifique : UMR137 (France)
7
LNO - Laboratoire Nano-Magnétisme et Oxydes (France)
- SPEC - UMR3680 - Service de physique de l'état condensé (SPEC - UMR3680 CEA-CNRS
(ex-URA 2464),
CEA/Saclay,
Orme des Merisiers,
F-91191 GIF SUR YVETTE CEDEX - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
- CNRS - Centre National de la Recherche Scientifique : UMR3680 (France)
- IRAMIS - Institut Rayonnement Matière de Saclay (91191 Gif-sur-Yvette, France - France)
- CEA - Commissariat à l'énergie atomique et aux énergies alternatives : DRF/IRAMIS (Centre de Saclay Centre de Grenoble Centre de Cadarache etc - France)
- Université Paris-Saclay (Espace Technologique, Bat. Discovery - RD 128 - 2e ét., 91190 Saint-Aubin - France)
Abstract : Optical spectroscopy has been combined with computational and theoretical techniques to show how the spin dynamics in the model multiferroic BiFeO3 responds to the application of hydrostatic pressure and its corresponding series of structural phase transitions from R3c to the Pnma phases. As pressure increases, multiple spin excitations associated with non-collinear cycloidal magnetism collapse into two excitations, which show jump discontinuities at some of the ensuing crystal phase transitions. Effective Hamiltonian approach provides information on the electrical polarization and structural changes of the oxygen octahedra through the successive structural phases. The extracted parameters are then used in a Ginzburg-Landau model to reproduce the evolution with pressure of the spin waves excitations observed at low energy and we demonstrate that the structural phases and the magnetic anisotropy drive and control the spin excitations.
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Journal articles
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https://hal-cea.archives-ouvertes.fr/cea-01406870
Contributor : Dominique Girard <>
Submitted on : Thursday, December 1, 2016 - 4:19:01 PM
Last modification on : Wednesday, June 10, 2020 - 10:00:04 AM
Document(s) archivé(s) le : Tuesday, March 21, 2017 - 9:34:14 AM
Contributor : Dominique Girard <>
Submitted on : Thursday, December 1, 2016 - 4:19:01 PM
Last modification on : Wednesday, June 10, 2020 - 10:00:04 AM
Document(s) archivé(s) le : Tuesday, March 21, 2017 - 9:34:14 AM
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1509.00284v1.pdf
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Identifiers
- HAL Id : cea-01406870, version 1
- ARXIV : 1509.00284
- DOI : 10.1103/PhysRevLett.115.267204
Collections
CEA | CNRS | UNIV-PARIS7 | DSM-IRAMIS | IRAMIS-SPEC | CEA-UPSAY | USPC | UNIV-PARIS-SACLAY | CEA-DRF | UP-SCIENCES
Citation
J. Buhot, C. Toulouse, Y. Gallais, A. Sacuto, R. de Sousa, et al.. Driving Spin Excitations by Hydrostatic Pressure in BiFeO3. Physical Review Letters, American Physical Society, 2015, 115 (26), ⟨10.1103/PhysRevLett.115.267204⟩. ⟨cea-01406870⟩
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