Magnetic-Field Universality of the Kondo Effect Revealed by Thermocurrent Spectroscopy

Journal article (2022)

Authors

C. Hsu QN/van der Zant Lab - AS
Theo A. Costi Forschungszentrum Jülich
David Vogel University of Basel
Christina Wegeberg University of Basel
Marcel Mayor University of Basel, Sun Yat-sen University, Karlsruhe Institut für Technologie
H.S.J. van der Zant Kavli institute of nanoscience Delft, QN/van der Zant Lab - AS
P. Gehring Kavli institute of nanoscience Delft, Université Catholique de Louvain, QN/van der Zant Lab - AS
Research Group
QN/van der Zant Lab (AS) (TU Delft)
Copyright: © 2022 C. Hsu, Theo A. Costi, David Vogel, Christina Wegeberg, Marcel Mayor, H.S.J. van der Zant, P. Gehring
DOI: https://doi.org/10.1103/PhysRevLett.128.147701
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Published Date

2022

Language

English

Reuse Rights

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Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/van der Zant Lab

Abstract

Probing the universal low-temperature magnetic-field scaling of Kondo-correlated quantum dots via electrical conductance has proved to be experimentally challenging. Here, we show how to probe this in nonlinear thermocurrent spectroscopy applied to a molecular quantum dot in the Kondo regime. Our results demonstrate that the bias-dependent thermocurrent is a sensitive probe of universal Kondo physics, directly measures the splitting of the Kondo resonance in a magnetic field, and opens up possibilities for investigating nanosystems far from thermal and electrical equilibrium.

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