Sahakyan A.S., Movsesyan R.M., Kocharian A.N.
California State University, US
Keywords: multilayered structures, noncollinearity, noncomplanarity, spin dependent transport, spin polarization
We consider structures consisting of repeating ferromagnetic and nonmagnetic layers. The periodicity of the potential profile, consisting of alternating magnetic barriers and non-magnetic quantum wells, is broken by noncollinearity or noncomplanarity of the magnetizations of neighboring magnetic layers. It is assumed that the non-magnetic quantum well shields the exchange magnetic interaction between the two adjacent barriers. Particular examples of such structures are the systems consisting of two “ferromagnetic domains” with canted magnetization vectors rotated relative to each other. In addition we also consider systems consisting of “antiferromagnetic pairs” or, e.g., of two or more “antiferromagnetic domains” with different orientations, including the two ferromagnetic or antiferromagnetic domains separated by “magnetic impurity “- when the magnetization of the barrier separating them – is oriented noncollinearly towards these domains. In these structures, besides the magnetic degrees of freedom described by the angles between the corresponding magnetizations, there exist other characteristics such as corresponding domain lengths that can influence the transport and polarization properties. The spin dependent transport and spin-polarizing properties in these magnetic multilayered structures are investigated. The variation of introduced degrees of freedom affects distinct physical properties of these multilayered nanostructures, by allowing these changes to appear in a controlled way.
Journal: TechConnect Briefs
Volume: 1, Advanced Materials: TechConnect Briefs 2017
Published: May 14, 2017
Pages: 180 - 183
Industry sector: Advanced Materials & Manufacturing
Topic: Nanoparticle Synthesis & Applications
ISBN: 978-0-9975117-8-9