255 citations · 1k across the 24 of their papers we have counts for
16 papers · 1 filter
Material systems for FM-/AFM-coupled skyrmions in Co/Pt-based multilayers
Hongying Jia, Bernd Zimmermann, Markus Hoffmann +3
By means of systematic first-principles calculations based on density functional theory we search for suitable materials that can host antiferromagnetically coupled skyrmions. We c…
Electric dipole moment as descriptor for interfacial Dzyaloshinskii-Moriya interaction
Hongying Jia, Bernd Zimmermann, Gregor Michalicek +2
Chiral magnets are of fundamental interest and have important technological ramifications. The origin of chiral magnets lies in the Dzyaloshinskii-Moriya interaction (DMI), an inte…
Comparison of first-principles methods to extract magnetic parameters in ultra-thin films: Co/Pt(111)
Bernd Zimmermann, Gustav Bihlmayer, Marie Böttcher +6
We compare three distinct computational approaches based on first-principles calculations within density functional theory to explore the magnetic exchange and the Dzyaloshinskii-M…
Dzyaloshinskii-Moriya interaction at disordered interfaces from ab initio theory: robustness against intermixing and tunability through dusting
Bernd Zimmermann, William Legrand, Davide Maccariello +4
The Dzyaloshinskii-Moriya interaction (DMI), which is essential for the stabilization of topologically non-trivial chiral magnetic textures such as skyrmions, is particularly stron…
First-principles investigation of chiral magnetic properties in multilayers: Rh/Co/Pt and Pd/Co/Pt
Hongying Jia, Bernd Zimmermann, Stefan Blügel
The magnetic properties of (111)-oriented Rh/Co/Pt and Pd/Co/Pt multilayers are investigated by first-principles calculations. We focus on the interlayer exchange coupling, and ide…
Non-local field-like spin-orbit torques in Rashba systems: an ab-initio study of AgBi/Ag/Fe film
Guillaume Géranton, Bernd Zimmermann, Nguyen H. Long +4
We investigate from first principles the field-like spin-orbit torques (SOTs) in a AgBi-terminated Ag(111) film grown on ferromagnetic Fe(110). We find that a large part of t…
Influence of complex disorder on skew-scattering Hall effects in -ordered FePt alloy
Bernd Zimmermann, Nguyen H. Long, Phivos Mavropoulos +2
We show by first-principles calculations that the skew-scattering anomalous Hall and spin-Hall angles of L-ordered FePt drastically depend on different types of disorder. A di…
Spin-orbit torques and spin accumulation in FePt/Pt and Co/Cu thin films from first principles: the role of impurities
Guillaume Géranton, Bernd Zimmermann, Nguyen Hoang Long +4
Using the Boltzmann formalism based on the first principles electronic structure and scattering rates, we investigate the current-induced spin accumulation and spin-orbit torques i…
Fermi surfaces, spin-mixing parameter, and colossal anisotropy of spin relaxation in transition metals from ab initio theory
Bernd Zimmermann, Phivos Mavropoulos, Nguyen H. Long +3
The Fermi-surfaces and Elliott-Yafet spin-mixing parameter (EYP) of several elemental metals are studied by \emph{ab initio} calculations. We focus first on the anisotropy of the E…
Quantum well states and amplified spin-dependent Friedel oscillations in thin films
Mohammed Bouhassoune, Bernd Zimmermann, Phivos Mavropoulos +4
Electrons mediate many of the interactions between atoms in a solid. Their propagation in a material determines its thermal, electrical, optical, magnetic and transport properties.…
First-principles analysis of a homo-chiral cycloidal magnetic structure in a monolayer Cr on W(110)
Bernd Zimmermann, Marcus Heide, Gustav Bihlmayer +1
The magnetic structure of a Cr monolayer on a W(110) substrate is investigated by means of first-principles calculations based on the noncollinear spin density functional theory (D…
Skew scattering in dilute ferromagnetic alloys
Bernd Zimmermann, Kristina Chadova, Diemo Ködderitzsch +8
The challenging problem of skew scattering for Hall effects in dilute ferromagnetic alloys, with intertwined effects of spin-orbit coupling, magnetism and impurity scattering, is s…
Spin relaxation and spin Hall transport in 5d transition-metal ultrathin films
Nguyen H. Long, Phivos Mavropoulos, Bernd Zimmermann +3
The spin relaxation induced by the Elliott-Yafet mechanism and the extrinsic spin Hall conductivity due to the skew-scattering are investigated in 5d transition-metal ultrathin fil…
Spin-flip hot spots in ultrathin films of monovalent metals: Enhancement and anisotropy of the Elliott-Yafet parameter
Nguyen H. Long, Phivos Mavropoulos, Swantje Heers +3
In contrast to the long-known fact that spin-flip hot spots, i.e., special \vc{k}-points on the Fermi surface showing a high spin-mixing parameter, do not occur in the bulk of mono…
Spin relaxation and the Elliott-Yafet parameter in W(001) ultrathin films: surface states, anisotropy and oscillation effects
Nguyen H. Long, Phivos Mavropoulos, Bernd Zimmermann +4
Using first-principles methods based on density-functional theory we investigate the spin relaxation in W(001) ultrathin films. Within the framework of the Elliott-Yafet theory we…
Anisotropy of spin relaxation in metals
Bernd Zimmermann, Phivos Mavropoulos, Swantje Heers +3
The concept of anisotropy of spin relaxation in non-magnetic metals with respect to the spin direction of the injected electrons relative to the crystal orientation is introduced.…