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

Chunwei Hsu; Theo A. Costi; David Vogel; Christina Wegeberg; Marcel Mayor; Herre S.J. Van Der Zant; Pascal Gehring

doi:10.1103/PhysRevLett.128.147701

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

Chunwei Hsu, Theo A. Costi, David Vogel, Christina Wegeberg, Marcel Mayor, Herre S.J. Van Der Zant, Pascal Gehring^*

^*Corresponding author for this work

QN/van der Zant Lab

Research output: Contribution to journal › Article › Scientific › peer-review

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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.

Original language	English
Article number	147701
Number of pages	6
Journal	Physical Review Letters
Volume	128
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevLett.128.147701
Publication status	Published - 2022

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title = "Magnetic-Field Universality of the Kondo Effect Revealed by Thermocurrent Spectroscopy",

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.",

author = "Chunwei Hsu and Costi, {Theo A.} and David Vogel and Christina Wegeberg and Marcel Mayor and {Van Der Zant}, {Herre S.J.} and Pascal Gehring",

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AU - Hsu, Chunwei

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AU - Wegeberg, Christina

AU - Mayor, Marcel

AU - Van Der Zant, Herre S.J.

AU - Gehring, Pascal

PY - 2022

Y1 - 2022

N2 - 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.

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

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Data supplementary to the publication: Magnetic-Field Universality of the Kondo Effect Revealed by Thermocurrent Spectroscopy

Thermoelectricity in single-molecule quantum dots

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

Abstract

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Data supplementary to the publication: Magnetic-Field Universality of the Kondo Effect Revealed by Thermocurrent Spectroscopy

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Thermoelectricity in single-molecule quantum dots

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