Project C04: Nature Communincations 2017

Correlation Driven Transport Asymmetries Through Coupled Spins in a Tunnel Junction

Spin–spin correlations are fundamental to many material properties because they favor certain ground states and are key in numerous models that describe the behavior of strongly correlated materials. While the sum of collective correlations usually lead to a macroscopically measurable change in properties, a direct quantification of correlations in atomic scale systems is difficult.
Using a scanning tunneling microscope we now determined the correlations between a localized spin and its electron bath by observing the appearance of differential conductance asymmetries during the coupling to a second spin in the junction.

M. Muenks, P. Jacobson, M. Ternes, and K. Kern
Nature Communincations 8,14119 (2017)
DOI: 10.1038/ncomms14119