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arXiv · 1101.4198

Cotunneling through a magnetic single-molecule transistor based on N\atC60

Nicolas Roch·Romain Vincent·Florian Elste·Wolfgang Harneit·Wolfgang Wernsdorfer·Carsten Timm·Franck Balestro
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Abstract

We present an experimental and theoretical study of a magnetic single-molecule transistor based on N@C60 connected to gold electrodes. Particular attention is paid to the regime of intermediate molecule-lead coupling, where cotunneling effects manifest themselves in the Coulomb-blockade regime. The experimental results for the differential conductance as a function of bias, gate voltage, and external magnetic field are in agreement with our analysis of the tunneling rates and provide evidence of magnetic signatures in single-N@C60 devices arising from an antiferromagnetic exchange interaction between the C60 spin and the nitrogen spin.

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Nicolas Roch, Romain Vincent, Florian Elste, Wolfgang Harneit, Wolfgang Wernsdorfer, Carsten Timm, Franck Balestro. 2011-01-21. Cotunneling through a magnetic single-molecule transistor based on N\atC60. https://doi.org/10.1103/physrevb.83.081407

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