Uppsala University

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2001 · cond-mat.mtrl-sciShow all

13 papers · 2 filters

cond-mat.mtrl-sci2001★ 70 cited

General boundary conditions for the envelope function in multiband k.p model

A. V. Rodina, A. Yu. Alekseev, Al. L. Efros +2

We have derived general boundary conditions (BC) for the multiband envelope functions (which do not contain spurious solutions) in semiconductor heterostructures with abrupt hetero…

cond-mat.mtrl-sci2001★ 27 cited

Ferromagnetic GaMnAs/GaAs superlattices - MBE growth and magnetic properties

J. Sadowski, R. Mathieu, P. Svedlindh +9

We have studied the magnetic properties of (GaMnAs)m/(GaAs)n superlattices with magnetic GaMnAs layers of thickness between 8 and 16 molecular layers (ML) (23-45 Å), and with nonma…

cond-mat.mtrl-sci2001★ 46 cited

Photoemission studies of Ga $_{1 - x}$ Mn $_{x}$ As: Mn-concentration dependent properties

H. Asklund, L. Ilver, J. Kanski +2

Using angle-resolved photoemission, we have investigated the development of the electronic structure and the Fermi level pinnning in Ga $_{1 - x}$ Mn $_{x}$ As with Mn concentrations in…

cond-mat.mtrl-sci2001★ 29 cited

Interlayer exchange coupling and giant magnetoresistance in Fe/V (001) superlattices

A. Broddefalk, R. Mathieu, P. Nordblad +4

Magnetization and magnetoresistivity studies of Fe/V (001) superlattices are reported. The first giant magnetoresistance peak with respect to the vanadium and iron layer thicknesse…

cond-mat.mtrl-sci2001★ 12 cited

Magnetic properties of 3d-impurities substituted in GaAs

S. Mirbt, B. Sanyal, P. Mohn

We have calculated the magnetic properties of substituted 3d-impurities (Cr-Ni) in a GaAs host by means of first principles electronic structure calculations. We provide a novel mo…

cond-mat.mtrl-sci2001★ 3 cited

Magnetotransport in a bi-crystal film of La_0.7Sr_0.3MnO_3

R. Mathieu, P. Svedlindh, R. Chakalov +1

Transport properties of an epitaxial film of La_0.7Sr_0.3MnO_3 (LSMO), deposited epitaxially on a LaAlO_3 bi-crystal substrate having a misorientation angle of 9.2 deg., have been…

cond-mat.mtrl-sci2001★ 26 cited

Fragility of the spin-glass-like collective state to a magnetic field in an interacting Fe-C nanoparticle system

P. E. Jönsson, S. Felton, P. Svedlindh +2

The effect of applied magnetic fields on the collective nonequilibrium dynamics of a strongly interacting Fe-C nanoparticle system has been investigated. It is experimentally shown…

cond-mat.mtrl-sci2001★ 9 cited

Cooling rate dependence of the antiferromagnetic domain structure of a single crystalline charge ordered manganite

R. Mathieu, P. Nordblad, A. R. Raju +1

The low temperature phase of single crystals of Nd $_{0.5}$ Ca $_{0.5}$ MnO $_{3}$ and Gd $_{0.5}$ Ca $_{0.5}$ MnO $_{3}$ manganites is investigated by squid magnetometry. Nd $_{0.5}$ Ca $_{0.5}$ Mn…

cond-mat.mtrl-sci2001★ 50 cited

Memory and chaos in an Ising spin glass

R. Mathieu, P. E. Jönsson, P. Nordblad +2

The non-equilibrium dynamics of the model 3d-Ising spin glass - Fe $_{0.55}$ Mn $_{0.45}$ TiO $_{3}$ - has been investigated from the temperature and time dependence of the zero field coo…

cond-mat.mtrl-sci2001

A novel method of self interaction corrections in density functional calculations

Urban Lundin, Olle Eriksson

It is demonstrated that the commonly applied self interaction correction (SIC) used in density functional theory does not remove all self interaction. We present as an alternative…

cond-mat.mtrl-sci2001★ 61 cited

Structural and magnetic properties of GaMnAs layers with high Mn content grown by Migration Enhanced Epitaxy on GaAs(100) substrates

J. Sadowski, R. Mathieu, P. Svedlindh +8

We have grown the ferromagnetic semiconductor GaMnAs containing up to 10% Mn by migration enhanced epitaxy at a substrate temperature of 150^oC. The alternate supply of As2 molecul…

cond-mat.mtrl-sci2001★ 39 cited

Relaxation time of weakly interacting superparamagnets

P. E. Jönsson, J. L. Garcia-Palacios

The relaxation time of weakly interacting classical spins is calculated by introducing the averages of the local dipolar field, obtained by thermodynamic perturbation theory, in a…

cond-mat.mtrl-sci2001★ 34 cited

Thermodynamic perturbation theory for dipolar superparamagnets