Surface/interface roughness effects on magneto-electrical properties of thin films

[摘要] We investigate roughness effects on electrical conductivity and giant magnetoresistance (GMR) in thin films with self-affine roughness, characterized by the r.m.s. roughness amplitude w, the in-plane correlation length xi, and the roughness exponent H. It is shown that dynamic roughening (evolution of the roughness parameters) plays an important role in electrical conductivity of growing films, and consequently also in the GMR. In both cases our theoretical predictions are in qualitative agreement with experimental observations. (C) 2002 Elsevier Science B.V. All rights reserved.

[发布日期] 2002-06-01

[效力级别]  Proceedings Paper

[关键词] electrical transport (conductivity, resistivity, mobility, etc.);magnetic films;surface structure, morphology, roughness, and;topography;magnetic interfaces