Shot noise as a probe of spin-correlated transport through single atoms

S. Pradhan; J. Fransson

doi:10.1103/physrevb.97.115409

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arXiv · 1802.00837

Shot noise as a probe of spin-correlated transport through single atoms

S. Pradhan·J. Fransson

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Abstract

We address the shot noise in the tunneling current through a localized spin, pertaining to recent experiments on magnetic adatoms and single molecular magnets. We show that both uncorrelated and spin-correlated scattering processes contribute vitally to the noise spectrum. The spin-correlated scattering processes provide an additional contribution to the Landauer-Büttiker shot noise expression, accounting for correlations between the tunneling electrons and the localized spin moment. By calculating the Fano factor, we show that both super- and sub-Poissonian shot noise can be described within our approach. Our theory provides transparent insights to noise spectroscopy, consistent with recent experiments using local probing techniques on magnetic atoms.

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S. Pradhan, J. Fransson. 2018-02-02. Shot noise as a probe of spin-correlated transport through single atoms. https://doi.org/10.1103/physrevb.97.115409

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