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Portrait of Heiner Linke; Photo: Kennet Ruona

Heiner Linke

Professor, Deputy dean at Faculty of Engineering, LTH

Portrait of Heiner Linke; Photo: Kennet Ruona

Thermoelectric Characterization of the Kondo Resonance in Nanowire Quantum Dots

Author

  • Artis Svilans
  • Martin Josefsson
  • Adam M. Burke
  • Sofia Fahlvik
  • Claes Thelander
  • Heiner Linke
  • Martin Leijnse

Summary, in English

We experimentally verify hitherto untested theoretical predictions about the thermoelectric properties of Kondo correlated quantum dots (QDs). The specific conditions required for this study are obtained by using QDs epitaxially grown in nanowires, combined with a recently developed method for controlling and measuring temperature differences at the nanoscale. This makes it possible to obtain data of very high quality both below and above the Kondo temperature, and allows a quantitative comparison with theoretical predictions. Specifically, we verify that Kondo correlations can induce a polarity change of the thermoelectric current, which can be reversed either by increasing the temperature or by applying a magnetic field.

Department/s

  • Solid State Physics
  • NanoLund

Publishing year

2018-11-16

Language

English

Publication/Series

Physical Review Letters

Volume

121

Issue

20

Document type

Journal article

Publisher

American Physical Society

Topic

  • Condensed Matter Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0031-9007