Layer-Dependent Magnetism and Spin Fluctuations in Atomically Thin van der Waals Magnet CrPS4

Huang, Mengqi; Green, Jazmine C.; Zhou, Jingcheng; Williams, Violet; Li, Senlei; Lu, Hanyi; Djugba, Dziga; Wang, Hailong; Flebus, Benedetta; Ni, Ni; Du, Chunhui Rita

doi:10.1021/acs.nanolett.3c02129

Layer-Dependent Magnetism and Spin Fluctuations in Atomically Thin van der Waals Magnet CrPS₄

Journal Article · Fri Sep 01 00:00:00 EDT 2023 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.3c02129· OSTI ID:2229570

^[1]; Green, Jazmine C. ^[2]; Zhou, Jingcheng ^[3]; Williams, Violet ^[4]; Li, Senlei ^[3]; Lu, Hanyi ^[5]; Djugba, Dziga ^[3]; Wang, Hailong ^[3]; Flebus, Benedetta ^[4]; Ni, Ni ^[2]; ^[3]

University of California, San Diego, La Jolla, CA (United States); Georgia Institute of Technology, Atlanta, GA (United States); Georgia Institute of Technology
University of California, Los Angeles, CA (United States)
University of California, San Diego, La Jolla, CA (United States); Georgia Institute of Technology, Atlanta, GA (United States)
Boston College, Chestnut Hill, MA (United States)
University of California, San Diego, La Jolla, CA (United States)

van der Waals (vdW) magnets, an emerging family of two-dimensional (2D) materials, have received tremendous attention due to their rich fundamental physics and significant potential for cutting-edge technological applications. In contrast to the conventional bulk counterparts, vdW magnets exhibit significant tunability of local material properties, such as stacking engineered interlayer coupling and layer-number dependent magnetic and electronic interactions, which promise to deliver previously unavailable merits to develop multifunctional microelectronic devices. As a further ingredient of this emerging topic, here we report nanoscale quantum sensing and imaging of atomically thin vdW magnet chromium thiophosphate CrPS₄, revealing its characteristic layer-dependent 2D static magnetism and dynamic spin fluctuations. We also show a large tunneling magnetoresistance in CrPS₄-based spin filter vdW heterostructures. Here, the excellent material stability, robust strategy against environmental degradation, in combination with tailored magnetic properties highlight the potential of CrPS₄ in developing state-of-the-art 2D spintronic devices for next-generation information technologies.

View Accepted Manuscript (DOE)

Research Organization:: University of California, San Diego, CA (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0021117; SC0022946

OSTI ID:: 2229570

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 17 Vol. 23; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Layer-Dependent Magnetism and Spin Fluctuations in Atomically Thin van der Waals Magnet CrPS4

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Layer-Dependent Magnetism and Spin Fluctuations in Atomically Thin van der Waals Magnet CrPS₄