High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point
Abstract Among the recently discovered 2D intrinsic van der Waals (vdW) magnets, Fe3GeTe2 (FGT) has emerged as a strong candidate for spintronics applications, due to its high Curie temperature (130 – 220 K) and magnetic tunability in response to external stimuli (electrical field, light, strain). T...
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| Format: | Article |
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Wiley
2023-03-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202206842 |
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| author | Ngoc‐Toan Dang Denis P. Kozlenko Olga N. Lis Sergey E. Kichanov Yevgenii V. Lukin Natalia O. Golosova Boris N. Savenko Dinh‐Loc Duong The‐Long Phan Tuan‐Anh Tran Manh‐Huong Phan |
| author_facet | Ngoc‐Toan Dang Denis P. Kozlenko Olga N. Lis Sergey E. Kichanov Yevgenii V. Lukin Natalia O. Golosova Boris N. Savenko Dinh‐Loc Duong The‐Long Phan Tuan‐Anh Tran Manh‐Huong Phan |
| author_sort | Ngoc‐Toan Dang |
| collection | DOAJ |
| description | Abstract Among the recently discovered 2D intrinsic van der Waals (vdW) magnets, Fe3GeTe2 (FGT) has emerged as a strong candidate for spintronics applications, due to its high Curie temperature (130 – 220 K) and magnetic tunability in response to external stimuli (electrical field, light, strain). Theory predicts that the magnetism of FGT can be significantly modulated by an external strain. However, experimental evidence is needed to validate this prediction and understand the underlying mechanism of strain‐mediated vdW magnetism in this system. Here, the effects of pressure (0 – 20 GPa) are elucidated on the magnetic and structural properties of Fe3GeTe2 by means of synchrotron Mössbauer source spectroscopy, X‐ray powder diffraction and Raman spectroscopy over a wide temperature range of 10 – 290 K. A strong suppression of ferromagnetic ordering is observed with increasing pressure, and a paramagnetic ground state emerges when pressure exceeds a critical value, PPM ≈ 15 GPa. The anomalous pressure dependence of structural parameters and vibrational modes is observed at PC ≈ 7 GPa and attributed to an isostructural phase transformation. Density functional theory calculations complement these experimental findings. This study highlights pressure as a driving force for magnetic quantum criticality in layered vdW magnetic systems. |
| first_indexed | 2024-04-09T21:52:21Z |
| format | Article |
| id | doaj.art-b2613fc6cf154537bb647df384eea390 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-04-09T21:52:21Z |
| publishDate | 2023-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-b2613fc6cf154537bb647df384eea3902023-03-24T12:30:05ZengWileyAdvanced Science2198-38442023-03-01109n/an/a10.1002/advs.202206842High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical PointNgoc‐Toan Dang0Denis P. Kozlenko1Olga N. Lis2Sergey E. Kichanov3Yevgenii V. Lukin4Natalia O. Golosova5Boris N. Savenko6Dinh‐Loc Duong7The‐Long Phan8Tuan‐Anh Tran9Manh‐Huong Phan10Institute of Research and Development Duy Tan University Da Nang 550000 VietnamFrank Laboratory of Neutron Physics JINR Moscow Reg. Dubna 141980 RussiaFrank Laboratory of Neutron Physics JINR Moscow Reg. Dubna 141980 RussiaFrank Laboratory of Neutron Physics JINR Moscow Reg. Dubna 141980 RussiaFrank Laboratory of Neutron Physics JINR Moscow Reg. Dubna 141980 RussiaFrank Laboratory of Neutron Physics JINR Moscow Reg. Dubna 141980 RussiaFrank Laboratory of Neutron Physics JINR Moscow Reg. Dubna 141980 RussiaCenter for Integrated Nanostructure Physics Institute for Basic Science Suwon 16419 Republic of KoreaFaculty of Engineering Physics and Nanotechnology VNU‐University of Engineering and Technology 144 Xuan Thuy, Cau Giay Ha Noi 100000 VietnamHo Chi Minh City University of Technology and Education Ho Chi Minh 700000 VietnamDepartment of Physics University of South Florida Tampa FL 33620 USAAbstract Among the recently discovered 2D intrinsic van der Waals (vdW) magnets, Fe3GeTe2 (FGT) has emerged as a strong candidate for spintronics applications, due to its high Curie temperature (130 – 220 K) and magnetic tunability in response to external stimuli (electrical field, light, strain). Theory predicts that the magnetism of FGT can be significantly modulated by an external strain. However, experimental evidence is needed to validate this prediction and understand the underlying mechanism of strain‐mediated vdW magnetism in this system. Here, the effects of pressure (0 – 20 GPa) are elucidated on the magnetic and structural properties of Fe3GeTe2 by means of synchrotron Mössbauer source spectroscopy, X‐ray powder diffraction and Raman spectroscopy over a wide temperature range of 10 – 290 K. A strong suppression of ferromagnetic ordering is observed with increasing pressure, and a paramagnetic ground state emerges when pressure exceeds a critical value, PPM ≈ 15 GPa. The anomalous pressure dependence of structural parameters and vibrational modes is observed at PC ≈ 7 GPa and attributed to an isostructural phase transformation. Density functional theory calculations complement these experimental findings. This study highlights pressure as a driving force for magnetic quantum criticality in layered vdW magnetic systems.https://doi.org/10.1002/advs.202206842high pressuremagnetic quantum criticalityvdW magnets |
| spellingShingle | Ngoc‐Toan Dang Denis P. Kozlenko Olga N. Lis Sergey E. Kichanov Yevgenii V. Lukin Natalia O. Golosova Boris N. Savenko Dinh‐Loc Duong The‐Long Phan Tuan‐Anh Tran Manh‐Huong Phan High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point Advanced Science high pressure magnetic quantum criticality vdW magnets |
| title | High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point |
| title_full | High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point |
| title_fullStr | High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point |
| title_full_unstemmed | High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point |
| title_short | High Pressure‐Driven Magnetic Disorder and Structural Transformation in Fe3GeTe2: Emergence of a Magnetic Quantum Critical Point |
| title_sort | high pressure driven magnetic disorder and structural transformation in fe3gete2 emergence of a magnetic quantum critical point |
| topic | high pressure magnetic quantum criticality vdW magnets |
| url | https://doi.org/10.1002/advs.202206842 |
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