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Breakdown of the resistor model of CPP-GMR in magnetic multilayered nanostructures.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Published
<mark>Journal publication date</mark>2000
<mark>Journal</mark>Physical review B
Issue number20
Volume61
Number of pages4
Pages (from-to)14225-14228
Publication StatusPublished
<mark>Original language</mark>English

Abstract

We study the effect on CPP GMR of changing the order of the layers in a multilayer. Using a tight-binding simple cubic two band model (s-d), magneto-transport properties are calculated in the zero-temperature, zero-bias limit, within the Landauer-Büttiker formalism. We demonstrate that for layers of different thicknesses formed from a single magnetic metal and multilayers formed from two magnetic metals, the GMR ratio and its dependence on disorder is sensitive to the order of the layers. This effect disappears in the limit of large disorder, where the results of the widely-used Boltzmann approach to transport are restored.