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Unconventional Magnetism in Layered Transition Metal Dichalcogenides

Laboratory for Muon Spin Spectroscopy, Paul Scherrer Institute, CH-5232 Villigen PSI, Switzerland
Condens. Matter 2020, 5(2), 42; https://doi.org/10.3390/condmat5020042
Received: 18 May 2020 / Revised: 15 June 2020 / Accepted: 17 June 2020 / Published: 20 June 2020
In this contribution to the MDPI Condensed Matter issue in Honor of Nobel Laureate Professor K.A. Müller I review recent experimental progress on magnetism of semiconducting transition metal dichalcogenides (TMDs) from the local-magnetic probe point of view such as muon-spin rotation and discuss prospects for the creation of unique new device concepts with these materials. TMDs are the prominent class of layered materials, that exhibit a vast range of interesting properties including unconventional semiconducting, optical, and transport behavior originating from valley splitting. Until recently, this family has been missing one crucial member: magnetic semiconductor. The situation has changed over the past few years with the discovery of layered semiconducting magnetic crystals, for example CrI 3 and VI 2 . We have also very recently discovered unconventional magnetism in semiconducting Mo-based TMD systems 2H-MoTe 2 and 2H-MoSe 2 [Guguchia et. al., Science Advances 2018, 4(12)]. Moreover, we also show the evidence for the involvement of magnetism in semiconducting tungsten diselenide 2H-WSe 2 . These results open a path to studying the interplay of 2D physics, semiconducting properties and magnetism in TMDs. It also opens up a host of new opportunities to obtain tunable magnetic semiconductors, forming the basis for spintronics. View Full-Text
Keywords: transition metal dichalcogenides; magnetic semiconductor spintronics transition metal dichalcogenides; magnetic semiconductor spintronics
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Guguchia, Z. Unconventional Magnetism in Layered Transition Metal Dichalcogenides. Condens. Matter 2020, 5, 42.

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