Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer
La0.7Sr0.3MnO3(LSMO) and Pt capped La0.7Sr0.3MnO3 20 nm thick films have been grown on SrTiO3 substrates by pulsed laser deposition. Microstrip line ferromagnetic resonance (MS-FMR) technique is then used to investigate their magnetic dynamic properties and to particularly measure the damping consta...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2015-09-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4931383 |
| _version_ | 1830490559817449472 |
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| author | G. Y. Luo M. Belmeguenai Y. Roussigné C. R. Chang J. G. Lin S. M. Chérif |
| author_facet | G. Y. Luo M. Belmeguenai Y. Roussigné C. R. Chang J. G. Lin S. M. Chérif |
| author_sort | G. Y. Luo |
| collection | DOAJ |
| description | La0.7Sr0.3MnO3(LSMO) and Pt capped La0.7Sr0.3MnO3 20 nm thick films have been grown on SrTiO3 substrates by pulsed laser deposition. Microstrip line ferromagnetic resonance (MS-FMR) technique is then used to investigate their magnetic dynamic properties and to particularly measure the damping constant based on the frequency dependence of microwave absorption linewidth. The results show that the effective damping constant of LSMO(20nm)/Pt(5.5nm) is three times larger than that of LSMO(20nm) and the films present weak in-plane uniaxial anistropy. The enhancement of the magnetic damping constant due to the capping of Pt is the manifestaction of the generation of spin current in Pt layer. Furthermore, the spin current induces an inverse spin Hall effect (ISHE) in LSMO(20nm)/Pt(5.5nm) system, measured using the FMR in cavity with 9.8 GHz excitation frequency. The linear dependence of ISHE on microwave power validates the mechenism of spin pumping in this bilayer system. |
| first_indexed | 2024-12-21T19:55:08Z |
| format | Article |
| id | doaj.art-b0c2402ec2fc43bebbae8986165af74e |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T19:55:08Z |
| publishDate | 2015-09-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-b0c2402ec2fc43bebbae8986165af74e2022-12-21T18:52:07ZengAIP Publishing LLCAIP Advances2158-32262015-09-0159097148097148-710.1063/1.4931383048509ADVEnhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layerG. Y. Luo0M. Belmeguenai1Y. Roussigné2C. R. Chang3J. G. Lin4S. M. Chérif5Deparment of Physics, National Taiwan University, Taipei 10617, TaiwanLSPM (CNRS-UPR 3407), Université Paris 13, Sorbonne Paris Cité, 99 avenue Jean-Baptiste Clément, 93430 Villetaneuse, FranceLSPM (CNRS-UPR 3407), Université Paris 13, Sorbonne Paris Cité, 99 avenue Jean-Baptiste Clément, 93430 Villetaneuse, FranceDeparment of Physics, National Taiwan University, Taipei 10617, TaiwanCenter for Condensed Matter Sciences, National Taiwan University, Taipei 10617, TaiwanLSPM (CNRS-UPR 3407), Université Paris 13, Sorbonne Paris Cité, 99 avenue Jean-Baptiste Clément, 93430 Villetaneuse, FranceLa0.7Sr0.3MnO3(LSMO) and Pt capped La0.7Sr0.3MnO3 20 nm thick films have been grown on SrTiO3 substrates by pulsed laser deposition. Microstrip line ferromagnetic resonance (MS-FMR) technique is then used to investigate their magnetic dynamic properties and to particularly measure the damping constant based on the frequency dependence of microwave absorption linewidth. The results show that the effective damping constant of LSMO(20nm)/Pt(5.5nm) is three times larger than that of LSMO(20nm) and the films present weak in-plane uniaxial anistropy. The enhancement of the magnetic damping constant due to the capping of Pt is the manifestaction of the generation of spin current in Pt layer. Furthermore, the spin current induces an inverse spin Hall effect (ISHE) in LSMO(20nm)/Pt(5.5nm) system, measured using the FMR in cavity with 9.8 GHz excitation frequency. The linear dependence of ISHE on microwave power validates the mechenism of spin pumping in this bilayer system.http://dx.doi.org/10.1063/1.4931383 |
| spellingShingle | G. Y. Luo M. Belmeguenai Y. Roussigné C. R. Chang J. G. Lin S. M. Chérif Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer AIP Advances |
| title | Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer |
| title_full | Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer |
| title_fullStr | Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer |
| title_full_unstemmed | Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer |
| title_short | Enhanced magnetic damping in La0.7Sr0.3MnO3 capped by normal metal layer |
| title_sort | enhanced magnetic damping in la0 7sr0 3mno3 capped by normal metal layer |
| url | http://dx.doi.org/10.1063/1.4931383 |
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