Department of Physics and Astronomy: Publications and Other Research

 

Date of this Version

5-1-2021

Document Type

Article

Citation

PHYSICAL REVIEW MATERIALS 5, 054406 (2021)

DOI: 10.1103/PhysRevMaterials.5.054406

Comments

©2021 American Physical Society. Used by permission.

Abstract

The magnetic anisotropy in MgO-capped MnPt films and its voltage control are studied using first-principles calculations. Sharp variation of the magnetic anisotropy with film thickness, especially in the Pt-terminated film, suggests that it may be widely tuned by adjusting the film thickness. In thick films the linear voltage control coefficient is as large as 1.5 and -0.6 pJ/Vm for Pt-terminated and Mn-terminated interfaces, respectively. The combination of a widely tunable magnetic anisotropy energy and a large voltage-control coefficient suggest that MgO-capped MnPt films can serve as a versatile platform for magnetic memory and antiferromagnonic applications.

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