Ultrafast light-induced magnetization in non-magnetic films: from orbital and spin Hall phenomena to the inverse Faraday effect

H Hamamera, F Souza Mendes Guimarães… - Frontiers in …, 2024 - frontiersin.org
The field of orbitronics has emerged with great potential to impact information technology by
enabling environmentally friendly electronic devices. The main electronic degree of freedom …

Orbital magnetoelectric effect in nanoribbons of transition metal dichalcogenides

TP Cysne, FSM Guimarães, LM Canonico, M Costa… - Physical Review B, 2023 - APS
The orbital magnetoelectric effect (OME) generically refers to the appearance of an orbital
magnetization induced by an applied electric field. Here, we show that nanoribbons of …

Orbital magnetoelectric effect in zigzag nanoribbons of -band systems

TP Cysne, FSM Guimarães, LM Canonico… - Physical Review B, 2021 - APS
Profiles of the spin and orbital angular momentum accumulations induced by a
longitudinally applied electric field are explored in nanoribbons of p-band systems with a …

First-principles study of the angular dependence of the spin-orbit torque in Pt/Co and Pd/Co bilayers

F Mahfouzi, N Kioussis - Physical Review B, 2018 - APS
Spin-orbit torque (SOT) induced by spin Hall and interfacial effects in heavy-metal
(HM)/ferromagnetic (FM) bilayers has recently been employed to switch the magnetization …

Impact of symmetry on anisotropic magnetoresistance in textured ferromagnetic thin films

A Philippi-Kobs, A Farhadi, L Matheis, D Lott… - Physical review …, 2019 - APS
We report on the magnetoresistance of textured films consisting of 3 d-ferromagnetic layers
sandwiched by Pt. While the conventional cos 2 φ behavior of the anisotropic …

Controlling the orbital Hall effect in gapped bilayer graphene in the terahertz regime

TP Cysne, WJM Kort-Kamp, TG Rappoport - Physical Review Research, 2024 - APS
We study the orbital Hall effect (OHE) in the AC regime using bilayer graphene (BLG) as a
prototypical material platform. While the unbiased BLG has gapless electronic spectra …

Microscopic origin of spin-orbit torque in ferromagnetic heterostructures: A first-principles approach

F Mahfouzi, R Mishra, PH Chang, H Yang, N Kioussis - Physical Review B, 2020 - APS
We present an ab initio based theoretical framework which elucidates the origin of the spin-
orbit torque (SOT) in normal-metal (NM)/ferromagnet (FM) heterostructures. The SOT is …

Superconductivity in nb: impact of temperature, dimensionality and cooper-pairing

UA Aceves Rodriguez, FSM Guimarães, S Lounis - Nanomaterials, 2024 - mdpi.com
The ability to realistically simulate the electronic structure of superconducting materials is
important to understand and predict various properties emerging in both the …

Polarisation-dependent single-pulse ultrafast optical switching of an elementary ferromagnet

H Hamamera, FSM Guimarães… - Communications …, 2022 - nature.com
The ultimate control of magnetic states of matter at femtosecond (or even faster) timescales
defines one of the most pursued paradigm shifts for future information technology. In this …

Theory of spin-Hall magnetoresistance in the ac terahertz regime

DA Reiss, T Kampfrath, PW Brouwer - Physical Review B, 2021 - APS
In bilayers consisting of a normal metal (N) with spin-orbit coupling and a ferromagnet (F),
the combination of the spin-Hall effect, the spin-transfer torque, and the inverse spin-Hall …