Artículos de revistas
Theory of giant magnetoresistance in granular alloys
Registro en:
Physical Review B. American Physical Soc, v. 59, n. 13, n. 8412, n. 8415, 1999.
0163-1829
WOS:000079754100019
10.1103/PhysRevB.59.8412
Autor
Ferrari, EF
da Silva, FCS
Knobel, M
Institución
Resumen
A theory of giant magnetoresistance in granular alloys was developed by considering the spin-dependent scattering within the magnetic granules and at their boundaries and the continuous distributions of granule sizes and directions of magnetization. The CPP formalism was recovered in the limit when the effective conductivities in the granules are much larger than the matrix conductivity. When this condition is not satisfied, the transport properties of the granular alloys derive from the crossover of the parallel and perpendicular current configurations. [S0163-1829(99)10309-6]. 59 13 8412 8415