Conveners
thursday afternoon
- Andrea Droghetti (Dipartimento di Scienze Molecolari e dei Sistemi Nanoscopici - Università Ca’ Foscari, Venice, Italy)
X-ray magnetic circular dichroism (XMCD) is a well-established technique for investigating magnetism. Here, we present theoretical studies of XMCD at the manganese L$_{2,3}$ edge in two altermagnets, MnTe [1] and MnF$_2$ [2], with experimental data available for MnTe. Our calculations reveal that spin-orbit coupling in the valence states has a negligible effect on the XMCD spectra. In other...
Antiferromagnetic conductors with suitably broken spatial symmetries host spin-polarized bands even in the absence of spin-orbit coupling, leading to transport phenomena commonly observed in metallic ferromagnets. Here we show that, in the two-dimensional (2D) limit, an electric field can control the relevant symmetries. Two situations are discussed. First, we show by first-principles...
The recent isolation of two-dimensional (2D) magnets offers tantalizing opportunities for spintronics, magnonics and quantum technologies at the limit of miniaturization. [1] In this presentation, I will provide an overview of our recent results on this fascinating topic. First, we will take advantage of the outstanding deformation capacity of 2D materials to answer the question: Can we use...
Engineering all magnetic phases within a single material platform would mark a significant milestone in materials science, simplifying device fabrication by eliminating the need for integrating different materials. We demonstrate that graphene can host all non-relativistic magnetic phases—diamagnetism, paramagnetism, ferromagnetism, antiferromagnetism, ferrimagnetism, altermagnetism and fully...
The impact of proximity-induced spin-orbit coupling and Hund interactions on the correlated phase diagram of Bernal bilayer graphene (BBG) is theoretically investigated. Using an effective ab initio-fitted BBG/WS$_2$ van der Waals heterostructure model, Coulomb and Hund interactions are incorporated through the random-phase approximation to examine possible correlated phases across various...
Borophene, a two-dimensional (2D) allotrope of boron, exhibits exceptional physical and chemical properties, positioning it as a promising candidate for various practical applications, potentially surpassing graphene [1]. However, its high reactivity and susceptibility to oxidation under ambient conditions present significant challenges. Strategies such as hydrogenation of monolayer [3] and...
Superconducting transition metal dichalcogenides provide a rich platform for exploring unconventional superconductivity, the spin-orbit coupling effects, and impurity-induced phenomena in two-dimensional systems [1,2,3]. In the talk we discuss the impact of scalar and magnetic single impurities on the quasiparticle interference (QPI) patterns in the superconducting phase of monolayer NbSe$_2$,...
