Spin-asymmetric material

As a consequence, if a current is passed from such a spin-asymmetric material, for example cobalt, into a paramagnetic material such as silver (which has no spin asymmetry between spin channels), there is a net influx into the silver of up-spins over down-spins. Thus, a surplus of up-spins appears in the silver, and with it a small associated magnetic moment per unit volume. This surplus is known as a spin accumulation. Evidently, for a constant current flow, the spin accumulation cannot increase indefinitely. The spin-up electrons injected across... 

The preparation and characterization of K3[0s(CN)5(NH3)] 2H20 have been described. This complex is a useful starting material for the synthesis of other [Os (CN)5L] species (e.g., L = py, pyz) and [0s(CN)5(H20)] can be obtained by the controlled aquation of [Os(Cf 5(NH3)f The kinetics of these ligand displacements have been investigated and mechanisms for the processes have been discussed. The UV-vis spectrum of each complex in the series [Os"(CN)5L] in which L is py, pyz, Mepz, or derivatives thereof, exhibits an intense, asymmetric MLCT absorption, split by spin-orbit coupling, and the effects of the electronic properties of L on the spectra have been examined. Redox properties of the complexes and the kinetics of the dissociation of pyz from [Os(CN)s(pyz)] have also been reported. ... 

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