Exchange Bias Between van der Waals Materials: Tilted Magnetic States and Field-Free Spin–Orbit-Torque Switching

Cham, Thow Jerald; Dorrian, Reiley J.; Zhang, Xiyue S.; Dismukes, Avalon H.; Chica, Daniel G.; May, Andrew F.; Roy, Xavier; Muller, David A.; Ralph, Daniel C.; Luo, Yunqiu Kelly

doi:10.1002/adma.202305739

Exchange Bias Between van der Waals Materials: Tilted Magnetic States and Field-Free Spin–Orbit-Torque Switching

Journal Article · Fri Oct 06 00:00:00 EDT 2023 · Advanced Materials

DOI:https://doi.org/10.1002/adma.202305739· OSTI ID:2434347

^[1]; Dorrian, Reiley J. ^[1]; Zhang, Xiyue S. ^[1]; Dismukes, Avalon H. ^[2]; Chica, Daniel G. ^[2]; ^[3]; Roy, Xavier ^[2]; Muller, David A. ^[4]; ^[4]; ^[5]

Cornell Univ., Ithaca, NY (United States)
Columbia Univ., New York, NY (United States)
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Cornell Univ., Ithaca, NY (United States); Kavli Institute at Cornell, Ithaca, NY (United States)
Cornell Univ., Ithaca, NY (United States); Kavli Institute at Cornell, Ithaca, NY (United States); Univ. of Southern California, Los Angeles, CA (United States)

Magnetic van der Waals heterostructures provide a unique platform to study magnetism and spintronics device concepts in the 2D limit. Here, studies of exchange bias from the van der Waals antiferromagnet CrSBr acting on the van der Waals ferromagnet Fe3GeTe2 (FGT) are reported. Additionally, the orientation of the exchange bias is along the in-plane easy axis of CrSBr, perpendicular to the out-of-plane anisotropy of the FGT, inducing a strongly tilted magnetic configuration in the FGT. Furthermore, the in-plane exchange bias provides sufficient symmetry breaking to allow deterministic spin–orbit torque switching of the FGT in CrSBr/FGT/Pt samples at zero applied magnetic field. A minimum thickness of the CrSBr of >10 nm is needed to provide a non-zero exchange bias at 30 K.

View Accepted Manuscript (DOE)

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Programmable Quantum Materials (Pro-QM); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE; USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division (MSE)

Grant/Contract Number:: AC05-00OR22725; SC0019443

OSTI ID:: 2434347

Alternate ID(s):: OSTI ID: 2280703

Journal Information:: Advanced Materials, Journal Name: Advanced Materials Journal Issue: 13 Vol. 36; ISSN 0935-9648

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Exchange Bias Between van der Waals Materials: Tilted Magnetic States and Field-Free Spin–Orbit-Torque Switching

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