68 citations · 188 across the 13 of their papers we have counts for
10 papers · 1 filter
Spin-orbit torques and their associated effective fields from gigahertz to terahertz
Filipe S. M. Guimarães, Juba Bouaziz, Manuel dos Santos Dias +1
Terahertz spintronics offers the prospect of devices which are both faster and more energy-efficient. A promising route to achieve this goal is to exploit current-induced spin-orbi…
The chiral biquadratic pair interaction
Sascha Brinker, Manuel dos Santos Dias, Samir Lounis
Magnetic interactions underpin a plethora of magnetic states of matter, hence playing a central role both in fundamental physics and for future spintronic and quantum computation d…
Spin dynamics of and impurities embedded in prototypical topological insulators
Juba Bouaziz, Manuel dos Santos Dias, Filipe Souza Mendes Guimarães +1
Topological insulators are insulating bulk materials hosting conducting surface states. Their magnetic doping breaks time-reversal symmetry and generates numerous interesting effec…
Impurity-induced orbital magnetization in a Rashba electron gas
Juba Bouaziz, Manuel dos Santos Dias, Filipe Souza Mendes Guimarães +2
We investigate the induced orbital magnetization density in a Rashba electron gas with magnetic impurities. Relying on classical electrodynamics, we obtain this quantity through th…
Nonlocal orbital magnetism of 3d adatoms deposited on the Pt(111) surface
Sascha Brinker, Manuel dos Santos Dias, Samir Lounis
The orbital magnetic moment is still surprisingly not well understood, in contrast to the spin part. Its description in finite systems, such as isolated atoms and molecules, is not…
Longitudinal and transverse spin relaxation times of magnetic single adatoms: an ab initio analysis
J. Ibañez-Azpiroz, M. dos Santos Dias, S. Blügel +1
We present a systematic ab initio investigation of the longitudinal and transverse spin relaxation times of magnetic single adatoms deposited on metallic substrates. Our analysis b…
Tuning paramagnetic spin-excitations of single adatoms
J. Ibañez-Azpiroz, M. dos Santos Dias, B. Schweflinghaus +2
Around 50 years ago, Doniach [Proc. Phys. Soc. 91, 86 (1967)] predicted the existence of paramagnons in nearly ferromagnetic materials, recently measured in bulk Pd [Phys. Rev. Let…
Engineering elliptical spin-excitations by complex anisotropy fields in Fe adatoms and dimers on Cu(111)
Filipe S. M. Guimarães, Manuel dos Santos Dias, Benedikt Schweflinghaus +1
We investigate the dynamics of Fe adatoms and dimers deposited on the Cu(111) metallic surface in the presence of spin-orbit coupling, within time-dependent density functional theo…
Three-atom magnets with strong substrate coupling: a gateway towards non-collinear spin processing
J. Hermenau, J. Ibañez-Azpiroz, Chr. Hübner +10
A cluster composed of a few magnetic atoms assembled on the surface of a nonmagnetic substrate is one suitable realization of a bit for future concepts of spin-based information te…
Theoretical probing of inelastic spin-excitations in adatoms on surfaces
Samir Lounis, Benedikt Schweflinghaus, Manuel dos Santos Dias +3
We review our recent work on the simulation, description and prediction of spin-excitations in adatoms and dimers deposited on metallic surfaces. This work done together with Dougl…