Controlling effective field contributions to laser-induced magnetization precession by heterostructure design
Abstract Nanoscale heterostructure design can control laser-induced heat dissipation and strain propagation, as well as their efficiency for driving magnetization precession. Here, we incorporate MgO layers into the experimental platform of metallic Pt-Cu-Ni heterostructures to block the propagation...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-03-01
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| Series: | Communications Physics |
| Online Access: | https://doi.org/10.1038/s42005-024-01602-z |
| _version_ | 1797233521465491456 |
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| author | Jasmin Jarecki Maximilian Mattern Fried-Conrad Weber Jan-Etienne Pudell Xi-Guang Wang Juan-Carlos Rojas Sánchez Michel Hehn Alexander von Reppert Matias Bargheer |
| author_facet | Jasmin Jarecki Maximilian Mattern Fried-Conrad Weber Jan-Etienne Pudell Xi-Guang Wang Juan-Carlos Rojas Sánchez Michel Hehn Alexander von Reppert Matias Bargheer |
| author_sort | Jasmin Jarecki |
| collection | DOAJ |
| description | Abstract Nanoscale heterostructure design can control laser-induced heat dissipation and strain propagation, as well as their efficiency for driving magnetization precession. Here, we incorporate MgO layers into the experimental platform of metallic Pt-Cu-Ni heterostructures to block the propagation of hot electrons. We show via ultrafast x-ray diffraction the capability of our platform to control the spatio-temporal shape of the transient heat and strain. Time-resolved magneto-optical Kerr experiments with systematic tuning of the magnetization precession frequency showcase control of the magnetization dynamics in the Ni layer. Our experimental analysis highlights the role of quasi-static strain as a driver of precession when the magnetic material is rapidly heated via electrons. The effective magnetic field change originating from demagnetization partially compensates the change induced by quasi-static strain. The strain pulses can be shaped via the nanoscale heterostructure design to efficiently drive the precession, paving the way for opto-magneto-acoustic devices with low heat energy deposited in the magnetic layer. |
| first_indexed | 2024-04-24T16:17:29Z |
| format | Article |
| id | doaj.art-56cd3759fe2e4592824bc89486d236fc |
| institution | Directory Open Access Journal |
| issn | 2399-3650 |
| language | English |
| last_indexed | 2024-04-24T16:17:29Z |
| publishDate | 2024-03-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Communications Physics |
| spelling | doaj.art-56cd3759fe2e4592824bc89486d236fc2024-03-31T11:22:54ZengNature PortfolioCommunications Physics2399-36502024-03-017111010.1038/s42005-024-01602-zControlling effective field contributions to laser-induced magnetization precession by heterostructure designJasmin Jarecki0Maximilian Mattern1Fried-Conrad Weber2Jan-Etienne Pudell3Xi-Guang Wang4Juan-Carlos Rojas Sánchez5Michel Hehn6Alexander von Reppert7Matias Bargheer8Institut für Physik & Astronomie, Universität PotsdamInstitut für Physik & Astronomie, Universität PotsdamInstitut für Physik & Astronomie, Universität PotsdamInstitut für Physik & Astronomie, Universität PotsdamSchool of Physics and Electronics, Central South UniversityInstitut Jean Lamour (UMR CNRS 7198), Université LorraineInstitut Jean Lamour (UMR CNRS 7198), Université LorraineInstitut für Physik & Astronomie, Universität PotsdamInstitut für Physik & Astronomie, Universität PotsdamAbstract Nanoscale heterostructure design can control laser-induced heat dissipation and strain propagation, as well as their efficiency for driving magnetization precession. Here, we incorporate MgO layers into the experimental platform of metallic Pt-Cu-Ni heterostructures to block the propagation of hot electrons. We show via ultrafast x-ray diffraction the capability of our platform to control the spatio-temporal shape of the transient heat and strain. Time-resolved magneto-optical Kerr experiments with systematic tuning of the magnetization precession frequency showcase control of the magnetization dynamics in the Ni layer. Our experimental analysis highlights the role of quasi-static strain as a driver of precession when the magnetic material is rapidly heated via electrons. The effective magnetic field change originating from demagnetization partially compensates the change induced by quasi-static strain. The strain pulses can be shaped via the nanoscale heterostructure design to efficiently drive the precession, paving the way for opto-magneto-acoustic devices with low heat energy deposited in the magnetic layer.https://doi.org/10.1038/s42005-024-01602-z |
| spellingShingle | Jasmin Jarecki Maximilian Mattern Fried-Conrad Weber Jan-Etienne Pudell Xi-Guang Wang Juan-Carlos Rojas Sánchez Michel Hehn Alexander von Reppert Matias Bargheer Controlling effective field contributions to laser-induced magnetization precession by heterostructure design Communications Physics |
| title | Controlling effective field contributions to laser-induced magnetization precession by heterostructure design |
| title_full | Controlling effective field contributions to laser-induced magnetization precession by heterostructure design |
| title_fullStr | Controlling effective field contributions to laser-induced magnetization precession by heterostructure design |
| title_full_unstemmed | Controlling effective field contributions to laser-induced magnetization precession by heterostructure design |
| title_short | Controlling effective field contributions to laser-induced magnetization precession by heterostructure design |
| title_sort | controlling effective field contributions to laser induced magnetization precession by heterostructure design |
| url | https://doi.org/10.1038/s42005-024-01602-z |
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