Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/102811
Title: Two-Dimensional Chromium Bismuthate: A Room-Temperature Ising Ferromagnet with Tunable Magneto-Optical Response
Authors: Mogulkoc, A.
Modarresi, M.
Rudenko, A. N.
Issue Date: 2021
Publisher: American Physical Society
Citation: Mogulkoc A. Two-Dimensional Chromium Bismuthate: A Room-Temperature Ising Ferromagnet with Tunable Magneto-Optical Response / A. Mogulkoc, M. Modarresi, A. N. Rudenko. — DOI 10.1103/PhysRevApplied.15.064053 // Physical Review Applied. — 2021. — Vol. 15. — Iss. 6. — 064053.
Abstract: We present a density-functional-theory-based study of a two-dimensional phase of chromium bismuthate (CrBi), a previously unknown material with exceptional magnetic and magneto-optical characteristics. Monolayer CrBi is a ferromagnetic metal with strong spin-orbit coupling induced by the heavy bismuth atoms, resulting in a strongly anisotropic Ising-type magnetic ordering with the Curie temperature estimated to be higher than 300 K. The electronic structure of the system is topologically nontrivial, giving rise to a nonzero Berry curvature in the ground magnetic state, leading to the anomalous Hall effect with a conductivity plateau of about 1.5e2/h at the Fermi level. Remarkably, the Hall conductivity and the magneto-optical constant are found to be strongly dependent on the direction of magnetization. Besides, monolayer CrBi demonstrates the polar magneto-optical Kerr effect in the visible and near-ultraviolet spectral ranges with the maximum rotation angles of up to 10 mrad. Our findings suggest that monolayer CrBi is a promising system for practical applications in magneto-optical and spintronic devices. © 2021 American Physical Society.
Keywords: BINARY ALLOYS
BISMUTH ALLOYS
CHROMIUM
CHROMIUM ALLOYS
DENSITY FUNCTIONAL THEORY
ELECTRIC CURRENTS
ELECTRONIC STRUCTURE
FERROMAGNETIC MATERIALS
FERROMAGNETISM
MONOLAYERS
OPTICAL KERR EFFECT
SPIN FLUCTUATIONS
SPIN HALL EFFECT
ANOMALOUS HALL EFFECTS
GROUND MAGNETIC STATE
HALL CONDUCTIVITY
MAGNETO-OPTICAL
MAGNETO-OPTICAL CONSTANT
MAGNETO-OPTICAL KERR EFFECTS
NEAR ULTRAVIOLET
SPINTRONIC DEVICE
SPIN ORBIT COUPLING
URI: http://hdl.handle.net/10995/102811
Access: info:eu-repo/semantics/openAccess
SCOPUS ID: 85108967613
PURE ID: 22193827
ISSN: 23317019
DOI: 10.1103/PhysRevApplied.15.064053
metadata.dc.description.sponsorship: The authors acknowledge the Ankara University for high performance computing facility through the AYP under Grant No. 17A0443001. This work is supported by the Scientific and Technological Research Council of Turkey (TUBITAK) under Project No. 119F361. The numerical calculations reported in this paper were partially performed at TUBITAK ULAKBIM, High Performance and Grid Computing Center (TRUBA resources).
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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