Interior and Edge Magnetization in Thin Exfoliated CrGeTe3 Films
Entity
UAM. Departamento de Física de la Materia CondensadaPublisher
American Chemical SocietyDate
2022-04-13Citation
10.1021/acs.nanolett.1c04665
Nano Letters 22.7 (2022): 3165 - 3172
ISSN
15306984DOI
10.1021/acs.nanolett.1c04665Project
Gobierno de España. PID2020-114071RB-I00; Gobierno de España. CEX2018-000805-M; Comunidad de Madrid. NANOMAGCOSTCM (Program No.S2018/NMT-4321)Subjects
2Dmagnetism; edgemagnetism; superconducting/ferromagneticinterface; scanningSQUID-on-tipmicroscopy; CrGeTe3; FísicaRights
© 2022 The AuthorsAbstract
CrGeTe3(CGT) is a semiconducting vdW ferromagnet shown to possess magnetism down to a two-layer thick sample. Although CGT is one of the leading candidates for spintronics devices, a comprehensive analysis of CGT thickness dependent magnetization is currently lacking. In this work, we employ scanning SQUID-on-Tip (SOT) microscopy to resolve the magnetic properties of exfoliated CGT flakes at 4.2 K. Combining transport measurements of CGT/NbSe2samples with SOT images, we present the magnetic texture and hysteretic magnetism of CGT, thereby matching the global behavior of CGT to the domain structure extracted from local SOT magnetic imaging. Using this method, we provide a thickness dependent magnetization state diagram of bare CGT films. No zero-field magnetic memory was found for films thicker than 10 nm, and hard ferromagnetism was found below that critical thickness. Using scanning SOT microscopy, we identify a unique edge magnetism, contrasting the results attained in the CGT interior
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Google Scholar:Noah, Avia
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Alpern, Hen
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Singh, Sourabh
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Gutfreund, Alon
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Zisman, Gilad
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Feld, Tomer D.
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Vakahi, Atzmon
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Remennik, Sergei
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Paltiel, Yossi
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Huber, Martin Emile
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Barrena Escolar, Víctor
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Suderow Rodríguez, Hermann Jesús
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