Magnetic phase diagrams from non-collinear canonical band theory

Magnetic phase diagrams from non-collinear canonical band theory

S. Shallcross,1,2,* L. Nordström,3 and S. Sharma4,5 1Lehrstuhl für Theoretische Festkörperphysik, Staudstrasse 7-B2, 91058 Erlangen, Germany 2Department of Physics, Technical University of Denmark, Building 307, DK-2800 Kongens Lyngby, Denmark 3Department of Physics, Condensed Matter Theory Group, Box 530, SE-751 21 Uppsala, Sweden 4Fritz Haber Institute of the Max Planck Society, Faradayweg 4-...

From Digital to Analogue Magnetoelectronics: Theory of Transport in Non-Collinear Magnetic Nanostructures

Magnetoelectronics is mainly digital, i.e. governed by up and down magnetizations. In contrast, analogue magnetoelectronics makes use of phenomena occuring for non-collinear magnetization configurations. Here we review theories which have recently been applied to the transport in noncollinear magnetic nanostructures in two and multiterminal structures, viz. random matrix and circuit theory. Bot...

Non-collinear Magnetic States: From Density Functional Theory to Model Hamiltonians

Recent observation of \colossal magnetoresistance" in La 1?x Ca x MnO 3 and related compounds suggest the importance of orientational disordering of Mn magnetic moments, especially near the Curie temperature. Several interesting compounds even display non-collinear moments (NCM) in their ground states. Although self-consistent local density functional based treatments of NCM are already availab...

Magnetic phase diagrams of the

Facilitation from collinear flanks is cancelled by non-collinear flanks

Detection of a central Gabor pattern is facilitated by the presence of collinear flanking patterns. We find that this facilitation is greatly reduced when the collinear flanks are combined with non-collinear flanks to form a coherent surround. These results are unlikely to be explained by mechanisms that merely transduce local contrast in a nonlinear fashion. A model wherein the outputs of such...