Coherent Transport in High Performance Double Magnetic Junctions
Authors: Silva, H. G.; Pogorelov, Y. G.
Source: Journal of Nanoscience and Nanotechnology, Volume 10, Number 4, April 2010 , pp. 2917-2920(4)
Publisher: American Scientific Publishers
Abstract:Spin-dependent transport is considered in double magnetic tunnel junctions of two types F-I-F-I-F and F-I-N-I-F with thin insulating (I) barriers between the ferromagnetic (F) or non-magnetic (N) electrodes. Using the Landauer formalism within single-band tight-binding dynamics for atomically perfect epitaxial multilayers, the dependencies of tunnel magnetoresistance (TMR) on the on-site atomic energies I or N and number nI of atomic planes in the respective layers are obtained. It is found that the maximum TMR corresponds to the "shallow band" regime with respect to N and a series of peaks appears with respect to nI, essentially enhancing the performance of a simple F-I-F junction. These results suggest the material and structural choices for optimum TMR devices of advanced compositions.
Document Type: Research Article
Publication date: April 1, 2010
- Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
- Editorial Board
- Information for Authors
- Subscribe to this Title
- Terms & Conditions
- ingentaconnect is not responsible for the content or availability of external websites