Spin Dependent Transport in Magnetic Nanostructures
In magnetic systems of nano-meter size, the interplay between spin and charge of electrons provides unique transport phenomena. In magnetic superlattices, magnetic and non-magnetic metallic thin films with thickness of the order of one nano-meter are piled-up alternately. Since the discovery of giant magnetoresistance (GMR) in these superlattices in 1988, spin dependent transport phenomena in magnetic nanostructures have received much attention from both academic and technological points of...
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In magnetic systems of nano-meter size, the interplay between spin and charge of electrons provides unique transport phenomena. In magnetic superlattices, magnetic and non-magnetic metallic thin films with thickness of the order of one nano-meter are piled-up alternately. Since the discovery of giant magnetoresistance (GMR) in these superlattices in 1988, spin dependent transport phenomena in magnetic nanostructures have received much attention from both academic and technological points of view.Ferromagnetic tunnel junctions made of ferromagnetic metal electrodes and a very thin insulating barrier between them are also of current interest as magnetoresistive devices, where the tunneling current depends on the relative orientation of magnetization (TMR). In addition to magnetic superlattices and magnetic tunnel junctions, magnetic granular systems and magnetic dots have been studied extensively as magnetoresistive systems. Edited by two of the world's leading authorities, Spin Dependent Transport in Magnetic Nanostructures introduces and explains the basic physics and applications of a variety of spin-dependent transport phenomena in magnetic nanostructures with particular emphasis on magnetic multilayers and magnetic tunnel junctions.
List of ContributorsPreface1Experiments of Giant Magnetoresistance1GMR in multilayered systems: experimental aspects5Studies on nanomagnetic systems using GMR effect342Theory of Giant Magnetoresistance47Formalisms51Layered structures63Two current model73Origins of GMR76Relation of GMR to TMR1053Experiments of Tunnel Magnetoresistance113Fabrication process and various kinds of magnetic tunnel junctions114Temperature and applied voltage dependence of TMR ratio122Local transport properties127Inelastic Electron Tunneling Spectroscopy1314Theory of Tunnel Magnetoresistance143Models of spin-dependent tunneling144Effects of Coulomb blockade on TMR163Spin accumulation197Other quantum effects on TMR2145Applications of Magnetic Nanostructures237Magnetic recording239Non-volatile magnetic memory263Index279
