Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures
Abstract Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding of the magneto-mechanical coupling in these materials. In this work, we suspend thin...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2022-06-01
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| Series: | npj 2D Materials and Applications |
| Online Access: | https://doi.org/10.1038/s41699-022-00315-7 |
| _version_ | 1818240715171299328 |
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| author | Makars Šiškins Samer Kurdi Martin Lee Benjamin J. M. Slotboom Wenyu Xing Samuel Mañas-Valero Eugenio Coronado Shuang Jia Wei Han Toeno van der Sar Herre S. J. van der Zant Peter G. Steeneken |
| author_facet | Makars Šiškins Samer Kurdi Martin Lee Benjamin J. M. Slotboom Wenyu Xing Samuel Mañas-Valero Eugenio Coronado Shuang Jia Wei Han Toeno van der Sar Herre S. J. van der Zant Peter G. Steeneken |
| author_sort | Makars Šiškins |
| collection | DOAJ |
| description | Abstract Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding of the magneto-mechanical coupling in these materials. In this work, we suspend thin Cr2Ge2Te6 layers and their heterostructures, creating ferromagnetic nanomechanical membrane resonators. We probe their mechanical and magnetic properties as a function of temperature and strain by observing magneto-elastic signatures in the temperature-dependent resonance frequency near the Curie temperature, T C. We compensate for the negative thermal expansion coefficient of Cr2Ge2Te6 by fabricating heterostructures with thin layers of WSe2 and antiferromagnetic FePS3, which have positive thermal expansion coefficients. Thus we demonstrate the possibility of probing multiple magnetic phase transitions in a single heterostructure. Finally, we demonstrate a strain-induced enhancement of T C in a suspended Cr2Ge2Te6-based heterostructure by 2.5 ± 0.6 K by applying a strain of 0.026% via electrostatic force. |
| first_indexed | 2024-12-12T13:17:51Z |
| format | Article |
| id | doaj.art-2cd6a5709e854d39a4766d874b7db435 |
| institution | Directory Open Access Journal |
| issn | 2397-7132 |
| language | English |
| last_indexed | 2024-12-12T13:17:51Z |
| publishDate | 2022-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj 2D Materials and Applications |
| spelling | doaj.art-2cd6a5709e854d39a4766d874b7db4352022-12-22T00:23:21ZengNature Portfolionpj 2D Materials and Applications2397-71322022-06-01611810.1038/s41699-022-00315-7Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructuresMakars Šiškins0Samer Kurdi1Martin Lee2Benjamin J. M. Slotboom3Wenyu Xing4Samuel Mañas-Valero5Eugenio Coronado6Shuang Jia7Wei Han8Toeno van der Sar9Herre S. J. van der Zant10Peter G. Steeneken11Kavli Institute of Nanoscience, Delft University of TechnologyKavli Institute of Nanoscience, Delft University of TechnologyKavli Institute of Nanoscience, Delft University of TechnologyKavli Institute of Nanoscience, Delft University of TechnologyInternational Center for Quantum Materials, Peking UniversityInstituto de Ciencia Molecular (ICMol), Universitat de ValènciaInstituto de Ciencia Molecular (ICMol), Universitat de ValènciaInternational Center for Quantum Materials, Peking UniversityInternational Center for Quantum Materials, Peking UniversityKavli Institute of Nanoscience, Delft University of TechnologyKavli Institute of Nanoscience, Delft University of TechnologyKavli Institute of Nanoscience, Delft University of TechnologyAbstract Two-dimensional magnetic materials with strong magnetostriction are attractive systems for realizing strain-tuning of the magnetization in spintronic and nanomagnetic devices. This requires an understanding of the magneto-mechanical coupling in these materials. In this work, we suspend thin Cr2Ge2Te6 layers and their heterostructures, creating ferromagnetic nanomechanical membrane resonators. We probe their mechanical and magnetic properties as a function of temperature and strain by observing magneto-elastic signatures in the temperature-dependent resonance frequency near the Curie temperature, T C. We compensate for the negative thermal expansion coefficient of Cr2Ge2Te6 by fabricating heterostructures with thin layers of WSe2 and antiferromagnetic FePS3, which have positive thermal expansion coefficients. Thus we demonstrate the possibility of probing multiple magnetic phase transitions in a single heterostructure. Finally, we demonstrate a strain-induced enhancement of T C in a suspended Cr2Ge2Te6-based heterostructure by 2.5 ± 0.6 K by applying a strain of 0.026% via electrostatic force.https://doi.org/10.1038/s41699-022-00315-7 |
| spellingShingle | Makars Šiškins Samer Kurdi Martin Lee Benjamin J. M. Slotboom Wenyu Xing Samuel Mañas-Valero Eugenio Coronado Shuang Jia Wei Han Toeno van der Sar Herre S. J. van der Zant Peter G. Steeneken Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures npj 2D Materials and Applications |
| title | Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures |
| title_full | Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures |
| title_fullStr | Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures |
| title_full_unstemmed | Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures |
| title_short | Nanomechanical probing and strain tuning of the Curie temperature in suspended Cr2Ge2Te6-based heterostructures |
| title_sort | nanomechanical probing and strain tuning of the curie temperature in suspended cr2ge2te6 based heterostructures |
| url | https://doi.org/10.1038/s41699-022-00315-7 |
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