Evidence of Spin Frustration in a Vanadium Diselenide Monolayer Magnet

Evidence of Spin Frustration in a Vanadium Diselenide Monolayer Magnet

© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 31(2019), 23 vom: 16. Juni, Seite e1901185
1. Verfasser: Wong, Ping Kwan Johnny (VerfasserIn)
Weitere Verfasser: Zhang, Wen, Bussolotti, Fabio, Yin, Xinmao, Herng, Tun Seng, Zhang, Lei, Huang, Yu Li, Vinai, Giovanni, Krishnamurthi, Sridevi, Bukhvalov, Danil W, Zheng, Yu Jie, Chua, Rebekah, N'Diaye, Alpha T, Morton, Simon A, Yang, Chao-Yao, Ou Yang, Kui-Hon, Torelli, Piero, Chen, Wei, Goh, Kuan Eng Johnson, Ding, Jun, Lin, Minn-Tsong, Brocks, Geert, de Jong, Michel P, Castro Neto, Antonio H, Wee, Andrew Thye Shen
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2019
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article 2D materials monolayer magnet spin frustration van der Waals epitaxy vanadium diselenide
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520 |a Monolayer VSe2 , featuring both charge density wave and magnetism phenomena, represents a unique van der Waals magnet in the family of metallic 2D transition-metal dichalcogenides (2D-TMDs). Herein, by means of in situ microscopy and spectroscopic techniques, including scanning tunneling microscopy/spectroscopy, synchrotron X-ray and angle-resolved photoemission, and X-ray absorption, direct spectroscopic signatures are established, that identify the metallic 1T-phase and vanadium 3d1 electronic configuration in monolayer VSe2 grown on graphite by molecular-beam epitaxy. Element-specific X-ray magnetic circular dichroism, complemented with magnetic susceptibility measurements, further reveals monolayer VSe2 as a frustrated magnet, with its spins exhibiting subtle correlations, albeit in the absence of a long-range magnetic order down to 2 K and up to a 7 T magnetic field. This observation is attributed to the relative stability of the ferromagnetic and antiferromagnetic ground states, arising from its atomic-scale structural features, such as rotational disorders and edges. The results of this study extend the current understanding of metallic 2D-TMDs in the search for exotic low-dimensional quantum phenomena, and stimulate further theoretical and experimental studies on van der Waals monolayer magnets 
650 4 |a Journal Article 
650 4 |a 2D materials 
650 4 |a monolayer magnet 
650 4 |a spin frustration 
650 4 |a van der Waals epitaxy 
650 4 |a vanadium diselenide 
700 1 |a Zhang, Wen  |e verfasserin  |4 aut 
700 1 |a Bussolotti, Fabio  |e verfasserin  |4 aut 
700 1 |a Yin, Xinmao  |e verfasserin  |4 aut 
700 1 |a Herng, Tun Seng  |e verfasserin  |4 aut 
700 1 |a Zhang, Lei  |e verfasserin  |4 aut 
700 1 |a Huang, Yu Li  |e verfasserin  |4 aut 
700 1 |a Vinai, Giovanni  |e verfasserin  |4 aut 
700 1 |a Krishnamurthi, Sridevi  |e verfasserin  |4 aut 
700 1 |a Bukhvalov, Danil W  |e verfasserin  |4 aut 
700 1 |a Zheng, Yu Jie  |e verfasserin  |4 aut 
700 1 |a Chua, Rebekah  |e verfasserin  |4 aut 
700 1 |a N'Diaye, Alpha T  |e verfasserin  |4 aut 
700 1 |a Morton, Simon A  |e verfasserin  |4 aut 
700 1 |a Yang, Chao-Yao  |e verfasserin  |4 aut 
700 1 |a Ou Yang, Kui-Hon  |e verfasserin  |4 aut 
700 1 |a Torelli, Piero  |e verfasserin  |4 aut 
700 1 |a Chen, Wei  |e verfasserin  |4 aut 
700 1 |a Goh, Kuan Eng Johnson  |e verfasserin  |4 aut 
700 1 |a Ding, Jun  |e verfasserin  |4 aut 
700 1 |a Lin, Minn-Tsong  |e verfasserin  |4 aut 
700 1 |a Brocks, Geert  |e verfasserin  |4 aut 
700 1 |a de Jong, Michel P  |e verfasserin  |4 aut 
700 1 |a Castro Neto, Antonio H  |e verfasserin  |4 aut 
700 1 |a Wee, Andrew Thye Shen  |e verfasserin  |4 aut 
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