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10 papers · 2 filters
Spin-Transfer Torque in Helical Spin-Density Waves
O. Wessely, B. Skubic, L. Nordstrom
The current driven magnetisation dynamics of a helical spin-density wave is investigated. Expressions for calculating the spin-transfer torque of real systems from first principles…
Reversible phase transformation and doubly-charged anions at the surface of simple cubic RbC60
Roberto Macovez, Andrea Goldoni, Luca Petaccia +3
The simple cubic phase of a RbC60 thin film has been studied using photoelectron spectroscopy. The simple cubic-to-dimer transition is found to be reversible at the film surface. A…
Atomistic spin dynamics of the CuMn spin glass alloy
B. Skubic, O. E. Peil, J. Hellsvik +3
We demonstrate the use of Langevin spin dynamics for studying dynamical properties of an archetypical spin glass system. Simulations are performed on CuMn (20% Mn) where we study t…
Dynamics of diluted magnetic semiconductors from atomistic spin dynamics simulations: Mn doped GaAs as a case study
J. Hellsvik, B. Skubic, L. Nordström +4
The dynamical behavior of the magnetism of diluted magnetic semiconductors (DMS) has been investigated by means of atomistic spin dynamics simulations. The conclusions drawn from t…
Detection of the spin character of Fe(001) surface states by scanning tunneling microscopy: A theoretical proposal
Athanasios N. Chantis, Darryl L. Smith, J. Fransson +1
We consider the magnetic structure on the Fe(001) surface and theoretically study the scanning tunneling spectroscopy using a spin-polarized tip (SP-STM). We show that minority-spi…
Data mining and accelerated electronic structure theory as a tool in the search for new functional materials
C. Ortiz, O. Eriksson, M. Klintenberg
Data mining is a recognized predictive tool in a variety of areas ranging from bioinformatics and drug design to crystal structure prediction. In the present study, an electronic s…
Radiation damage in biological material: electronic properties and electron impact ionization in urea
C. Caleman, C. Ortiz, E. Marklund +6
Radiation damage is an unavoidable process when performing structural investigations of biological macromolecules with X-ray sources. In crystallography this process can be limited…
Quantitative magnetic information from reciprocal space maps in transmission electron microscopy
Hans Lidbaum, Ján Rusz, Andreas Liebig +5
One of the most challenging issues in the characterization of magnetic materials is to obtain quantitative analysis on the nanometer scale. Here we describe how electron magnetic c…
A method for atomistic spin dynamics simulations: implementation and examples
B. Skubic, J. Hellsvik, L. Nordström +1
We present a method for performing atomistic spin dynamic simulations. A comprehensive summary of all pertinent details for performing the simulations such as equations of motions,…
Intrinsic electric polarization in spin-orbit coupled semiconductor heterostructures
A. V. Rodina, A. Yu. Alekseev
We present Maxwell equations with source terms for the electromagnetic field interacting with a moving electron in a spin-orbit coupled semiconductor heterostructure. We start with…