Spin-dependent tunneling and Coulomb blockade in ferromagnetic nanoparticles
Kay Yakushiji, Franck Ernult, Seiji Mitani, Koki Takanashi, Hiroyasu, Fujimori
TL;DR
This review explores spin-dependent tunneling in ferromagnetic nanoparticles, highlighting phenomena like enhanced tunnel magnetoresistance and sign changes due to spin accumulation, with implications for spintronic devices.
Contribution
It provides a comprehensive overview of spin-dependent tunneling mechanisms and experimental results in ferromagnetic nanoparticle systems.
Findings
Enhanced tunnel magnetoresistance due to co-tunneling in Coulomb blockade regime
Sign changes of TMR caused by spin accumulation in nanoparticles
Discussion of nanoparticle assembly methods and transport mechanisms
Abstract
We review studies on spin-dependent tunneling phenomena in systems containing ferromagnetic nanoparticles. We discuss preparation methods of assembling nanoparticles as well as the mechanisms and results of spin-dependent transport properties. The emphasis of this review is on characteristic spin-dependent tunneling phenomena such as enhanced tunnel magnetoresistance (TMR) due to co-tunneling in the Coulomb blockade regime and sign changes of the TMR due to spin accumulation in nanoparticles.
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