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Single electron spintronics

Dempsey, KJ, Ciudad, D and Marrows, CH (2011) Single electron spintronics. Philosophical Transactions of the Royal Society A. Mathematical, Physical and Engineering Sciences, 369 (1948). 3150 - 3174 . ISSN 1364-503X

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Abstract

Single electron electronics is now well developed, and allows the manipulation of electrons one-by-one as they tunnel on and off a nanoscale conducting island. In the past decade or so, there have been concerted efforts in several laboratories to construct single electron devices incorporating ferromagnetic components in order to introduce spin functionality. The use of ferromagnetic electrodes with a non-magnetic island can lead to spin accumulation on the island. On the other hand, making the dot also ferromagnetic introduces new physics such as tunnelling magnetoresistance enhancement in the cotunnelling regime and manifestations of the Kondo effect. Such nanoscale islands are also found to have long spin lifetimes. Conventional spintronics makes use of the average spin-polarization of a large ensemble of electrons: this new approach offers the prospect of accessing the quantum properties of the electron, and is a candidate approach to the construction of solid-state spin-based qubits.

Item Type: Article
Copyright, Publisher and Additional Information: © 2011,The Royal Society. This is an author produced version of a paper published in Philosophical Transactions of the Royal Society A. Mathematical, Physical and Engineering Sciences. Uploaded in accordance with the publisher's self-archiving policy.
Keywords: spintronics, nanomagnetism, nanoelectronics, magnetic tunnel-junctions, coulomb-blockade regime, spin-polarized electrons, graphene quantum dots, room-temperature, magnetoresistance oscillations, ferromagnetic nanoparticles, enhanced magnetoresistance, giant magnetoresistance, transport
Institution: The University of Leeds
Academic Units: The University of Leeds > Faculty of Maths and Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds)
Depositing User: Symplectic Publications
Date Deposited: 25 Apr 2012 12:13
Last Modified: 07 Jun 2014 18:38
Published Version: http://dx.doi.org/10.1098/rsta.2011.0105
Status: Published
Publisher: The Royal Society
Identification Number: 10.1098/rsta.2011.0105
URI: http://eprints.whiterose.ac.uk/id/eprint/43878

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