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Showing 2003 · cond-mat.mtrl-sciShow all

9 papers · 2 filters

cond-mat.mtrl-sci2003★ 49 cited

Anomalous Ferromagnetism of Monatomic Co Wire at the Pt(111) Surface Step Edge

Alexander B. Shick, Frantishek Maca, Peter M. Oppeneer

A first-principles investigation of the anomalous ferromagnetism of a quasi-one-dimensional Co chain at the Pt(111) step edge is reported. Our calculations show that the symmetry b…

cond-mat.mtrl-sci2003★ 3 cited

Superparamagnetism and Spin Glass Dynamics of Interacting Magnetic Nanoparticle Systems

Petra E. Jönsson

The physical properties of magnetic nanoparticles have been investigated with focus on the influence of dipolar interparticle interaction. For weakly coupled nanoparticles, thermod…

cond-mat.mtrl-sci2003★ 1 cited

Landauer conductance of tunnel junctions: Strong impact from boundary conditions

Peter Zahn, Ingrid Mertig

We present model calculations for the Landauer conductance of tunnel junctions. The tunneling of free electrons through a rectangular potential barrier is considered. The conductan…

cond-mat.mtrl-sci2003★ 142 cited

Electronic structure and magnetism of Mn doped GaN

B. Sanyal, O. Bengone, S. Mirbt

Mn doped semiconductors are extremely interesting systems due to their novel magnetic properties suitable for the spintronics applications. It has been shown recently by both theor…

cond-mat.mtrl-sci2003★ 143 cited

Ferromagnetic materials in the zinc-blende structure

B. Sanyal, L. Bergqvist, O. Eriksson

New materials are currently sought for use in spintronics applications. Ferromagnetic materials with half metallic properties are valuable in this respect. Here we present the elec…

cond-mat.mtrl-sci2003★ 108 cited

Spin Glasses: A Ghost Story

P. E. Jönsson, R. Mathieu, P. Nordblad +3

Extensive experimental and numerical studies of the non-equilibrium dynamics of spin glasses subjected to temperature or bond perturbations have been performed to investigate chaos…

cond-mat.mtrl-sci2003

Magnetic properties of GaMnAs single layers and GaInMnAs superlattices investigated at low temperature and high magnetic field

C. Hernandez, F. Terki, S. Charar +4

Magnetotransport properties of GaMnAs single layers and InGaMnAs/InGaAs superlattice structures were investigated at temperatures from 4 K to 300 K and magnetic fields up to 23 T t…

cond-mat.mtrl-sci2003

Nitrogen local electronic structure in Ga(In)AsN alloys by soft-X-ray absorption and emission: Implications for optical properties

V. N. Strocov, P. O. Nilsson, T. Schmitt +7

Soft-X-ray emission and absorption spectroscopies with their elemental specificity are used to determine the local electronic structure of N atoms in Ga(In)AsN diluted semiconducto…

cond-mat.mtrl-sci2003★ 70 cited

First Principles Calculations of Fe on GaAs (100)

S. Mirbt, B. Sanyal, C. Isheden +1

We have calculated from first principles the electronic structure of 0.5 monolayer upto 5 monolayer thick Fe layers on top of a GaAs (100) surface. We find the Fe magnetic moment t…