CrAs Monolayer: Low Buckled 2D Half‐Metal Ferromagnet

Rahman, Gul; Jahangirli, Z. A.

doi:10.1002/pssr.201900509

Cited by 7 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the size of the insulating gap is an important evaluation criterion for half metals. As shown in figure 3(b), we can observe that the insulating gap in the EuOBr monolayer can be as large as 4.384 eV, which is much larger than typical 2D half metals found so far including FeI 2 , CrAs, AgN, FeCl 3 , Cr 2 O 3 [12,17,[52][53][54][55][56][57][58][59]. In the spin-up channel, we can notice that there are several band crossings near the Fermi energy level (see figure 3(a)).…”

Section: Topological Band Structurementioning

confidence: 70%

Two-dimensional half-metallicity and fully spin-polarized topological fermions in monolayer EuOBr

et al. 2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Two-dimensional (2D) half-metallicity and topological states of matter have been the current research focus in condensed matter physics. Herein, we report a novel 2D material named EuOBr monolayer, which can simultaneously show 2D half-metallicity and topological fermions. The material features conducting electronic states in the spin-up channel but a large insulating gap of 4.38 eV in the spin-down channel. In the conducting spin channel, the EuOBr monolayer shows the coexistence of Weyl points and nodal lines near the Fermi energy. The nodal lines in the material contain rich categories including type-I, hybrid, closed, and open nodal lines. The symmetry analysis suggests these nodal lines are protected by the horizontal mirror symmetry, which cannot be broken even spin-orbit coupling (SOC) is included because the ground magnetization direction in the material is out-of-plane [001]. The topological fermions in the EuOBr monolayer are fully spin-polarized, which can be meaningful for future applications in topological spintronic nano-devices.

show abstract

Section: Topological Band Structurementioning

confidence: 70%

Two-dimensional half-metallicity and fully spin-polarized topological fermions in monolayer EuOBr

et al. 2023

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…Recently, ferromagnetism has been predicted in 2D chromium pnictides [41,62,63]. This was motivating us to consider another member of this family, namely, hexagonal monolayer CrBi.…”

Section: Introductionmentioning

confidence: 99%

Two-dimensional chromium bismuthate: A room-temperature Ising ferromagnet with tunable magneto-optical response

Mogulkoc,

Modarresi,

Rudenko

2020

Preprint

View full text Add to dashboard Cite

We study a two-dimensional phase of chromium bismuthate (CrBi), previously unknown material with exceptional magnetic and magnetooptical 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 the conductivity plateau of ∼1.5 e 2 /h at the Fermi level. Besides, monolayer CrBi demonstrates the magnetooptical Kerr effect in the visible and near-ultraviolet spectral ranges with the maximum rotation angles of up to 10 mrad. Remarkably, the magnetooptical response is strongly dependent on the direction of magnetization, which makes monolayer CrBi a promising system for practical applications in magnetooptical and spintronic devices.

show abstract

A half-metallic ferrimagnet of CeCu3Cr4O12 with 4f itinerant electron

Sun

et al. 2020

Applied Physics Letters

View full text Add to dashboard Cite

Half-metals have drawn extensive interest due to their unique electronic structure and wide application in spintronics. We report an A-site-ordered quadruple perovskite CeCu3Cr4O12 with half-metallic behaviors using first-principles calculations. Our calculations demonstrate that CeCu3Cr4O12 is a ferrimagnet with a saturated magnetic moment of 7.00 μB f.u.–1. Effective ferrimagnetic interactions are generated from the antiparallel spin arrangement between the A′-site Cu and B-site Cr. The electronic structure analyses reveal that CeCu3Cr4O12 exhibits half-metal performance, which can be attributed to the mixed-valence of B-site Cr. More importantly, a small amount of 4f itinerant electrons are located on the A-site Ce, i.e., both itinerant electron magnetism and localized magnetic moments are observed in the theoretical calculations. The charge distribution in this system is confirmed to be Ce(4−δ)+Cu2+3Cr(3.5+δ)+4O2−12. The physical properties of the AA′3B4O12-type perovskite CeCu3Cr4O12 revealed in this study show that this class of materials shows promise in applications of half-metals.

show abstract

CrAs Monolayer: Low Buckled 2D Half‐Metal Ferromagnet

Cited by 7 publications

References 38 publications

Two-dimensional half-metallicity and fully spin-polarized topological fermions in monolayer EuOBr

Two-dimensional half-metallicity and fully spin-polarized topological fermions in monolayer EuOBr

Two-dimensional chromium bismuthate: A room-temperature Ising ferromagnet with tunable magneto-optical response

A half-metallic ferrimagnet of CeCu3Cr4O12 with 4f itinerant electron

Contact Info

Product

Resources

About