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Strength of the Effective Coulomb Interaction at Metal and Insulator Surfaces
Ersoy Sasioglu, Christoph Friedrich, Stefan Blügel
The effective on-site Coulomb interaction (Hubbard ) between localized electrons at crystal surfaces is expected to be enhanced due to the reduced coordination number and reduce…
Engineering ultrafast spin currents and terahertz transients by magnetic heterostructures
T. Kampfrath, M. Battiato, P. Maldonado +9
In spin-based electronics, information is encoded by the spin state of electron bunches. Processing this information requires the controlled transport of spin angular momentum thro…
Parity effect in ground state localization of antiferromagnetic chains coupled to a ferromagnet
Simon Holzberger, Tobias Schuh, Stefan Blügel +2
We investigate the ground states of antiferromagnetic Mn nanochains on Ni(110) by spin-polarized scanning tunneling microscopy in combination with theory. While the ferrimagnetic l…
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.…
Exchange interactions and local moment fluctuation corrections in ferromagnets at finite temperatures based on non-collinear density-functional calculations
Marjana Lezaic, Phivos Mavropoulos, Gustav Bihlmayer +1
We explore the derivation of interatomic exchange interactions in ferromagnets within density-functional theory (DFT) and the mapping of DFT results onto a spin Hamiltonian. We del…
Lifetime reduction of surface states at Cu, Ag and Au(111) caused by impurity scattering
Swantje Heers, Phivos Mavropoulos, Samir Lounis +2
We present density-functional results on the lifetime of the (111) surface state of the noble metals. We consider scattering on the Fermi surface caused by impurity atoms belonging…