Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality
Abstract 2D magnetic crystals with atomic thickness exhibit intriguing physical properties, which have attracted considerable research interest in the related materials’ family, both in fundamental research and in developing spintronic devices. The recent discovery of some non‐van der Waals 2D magne...
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2025-05-01
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| Series: | Advanced Electronic Materials |
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| Online Access: | https://doi.org/10.1002/aelm.202400720 |
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| author | Guangyao Miao Minghui Gu Haojie Sun Pan Chen Jiade Li Siwei Xue Nuoyu Su Zhibin Su Weiliang Zhong Zhihan Zhang Xuetao Zhu Jiandi Zhang Yugui Yao Wei Jiang Meng Meng Weihua Wang Jiandong Guo |
| author_facet | Guangyao Miao Minghui Gu Haojie Sun Pan Chen Jiade Li Siwei Xue Nuoyu Su Zhibin Su Weiliang Zhong Zhihan Zhang Xuetao Zhu Jiandi Zhang Yugui Yao Wei Jiang Meng Meng Weihua Wang Jiandong Guo |
| author_sort | Guangyao Miao |
| collection | DOAJ |
| description | Abstract 2D magnetic crystals with atomic thickness exhibit intriguing physical properties, which have attracted considerable research interest in the related materials’ family, both in fundamental research and in developing spintronic devices. The recent discovery of some non‐van der Waals 2D magnetic crystals expands the systems. Nevertheless, the relationship between the dimensionality of microscopic magnetic exchange interactions and macroscopic magnetic properties at the 2D limit remains to be fully elucidated. Here, we have fabricated mono‐phased continuous ultrathin CrTe2 and Cr3Te4 films by molecular beam epitaxy and elucidated the diverse magnetism tuned by the dimensionality of exchange interactions by a joint study of spin‐polarized scanning tunneling microscopy, magnetization, magneto‐transport measurements, and density functional theory calculations. The transition from a zigzag‐antiferromagnetic order in the monolayer CrTe2 to a ferromagnetic (FM) order in the second‐layer CrTe2 is confirmed, which is driven by their varied in‐plane lattice constants induced change of 2D exchange interactions. A robust FM state with large perpendicular magnetic anisotropy in Cr3Te4 is observed, originating from its strong 3D exchange interactions. The observed evolution of magnetism demonstrates that the dimensionality of magnetic exchange interactions strongly influences magnetism even at the 2D limit. |
| format | Article |
| id | doaj-art-d0047b2b5f924ece97f85f78b2d3ffe6 |
| institution | DOAJ |
| issn | 2199-160X |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Electronic Materials |
| spelling | doaj-art-d0047b2b5f924ece97f85f78b2d3ffe62025-08-20T03:08:00ZengWiley-VCHAdvanced Electronic Materials2199-160X2025-05-01117n/an/a10.1002/aelm.202400720Tuning the Magnetism in Ultrathin CrxTey Films by Lattice DimensionalityGuangyao Miao0Minghui Gu1Haojie Sun2Pan Chen3Jiade Li4Siwei Xue5Nuoyu Su6Zhibin Su7Weiliang Zhong8Zhihan Zhang9Xuetao Zhu10Jiandi Zhang11Yugui Yao12Wei Jiang13Meng Meng14Weihua Wang15Jiandong Guo16Beijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaCentre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaSchool of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaCentre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 ChinaCentre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaBeijing National Laboratory for Condensed Matter Physics and Institute of Physics Chinese Academy of Sciences Beijing 100190 ChinaAbstract 2D magnetic crystals with atomic thickness exhibit intriguing physical properties, which have attracted considerable research interest in the related materials’ family, both in fundamental research and in developing spintronic devices. The recent discovery of some non‐van der Waals 2D magnetic crystals expands the systems. Nevertheless, the relationship between the dimensionality of microscopic magnetic exchange interactions and macroscopic magnetic properties at the 2D limit remains to be fully elucidated. Here, we have fabricated mono‐phased continuous ultrathin CrTe2 and Cr3Te4 films by molecular beam epitaxy and elucidated the diverse magnetism tuned by the dimensionality of exchange interactions by a joint study of spin‐polarized scanning tunneling microscopy, magnetization, magneto‐transport measurements, and density functional theory calculations. The transition from a zigzag‐antiferromagnetic order in the monolayer CrTe2 to a ferromagnetic (FM) order in the second‐layer CrTe2 is confirmed, which is driven by their varied in‐plane lattice constants induced change of 2D exchange interactions. A robust FM state with large perpendicular magnetic anisotropy in Cr3Te4 is observed, originating from its strong 3D exchange interactions. The observed evolution of magnetism demonstrates that the dimensionality of magnetic exchange interactions strongly influences magnetism even at the 2D limit.https://doi.org/10.1002/aelm.2024007202D materialsbilayerdimensionality effectmagnetismmonolayernon‐van der Waals magnets |
| spellingShingle | Guangyao Miao Minghui Gu Haojie Sun Pan Chen Jiade Li Siwei Xue Nuoyu Su Zhibin Su Weiliang Zhong Zhihan Zhang Xuetao Zhu Jiandi Zhang Yugui Yao Wei Jiang Meng Meng Weihua Wang Jiandong Guo Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality Advanced Electronic Materials 2D materials bilayer dimensionality effect magnetism monolayer non‐van der Waals magnets |
| title | Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality |
| title_full | Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality |
| title_fullStr | Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality |
| title_full_unstemmed | Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality |
| title_short | Tuning the Magnetism in Ultrathin CrxTey Films by Lattice Dimensionality |
| title_sort | tuning the magnetism in ultrathin crxtey films by lattice dimensionality |
| topic | 2D materials bilayer dimensionality effect magnetism monolayer non‐van der Waals magnets |
| url | https://doi.org/10.1002/aelm.202400720 |
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