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Measuring Temperature Gradients over Nanometer Length Scales.

  • Eric A Hoffmann
  • Henrik Nilsson
  • Jason E Matthews
  • Natthapon Nakpathomkun
  • Ann Persson
  • Lars Samuelson
  • Heiner Linke
Publiceringsår: 2009
Språk: Engelska
Sidor: 779-783
Publikation/Tidskrift/Serie: Nano Letters
Volym: 9
Nummer: 2
Dokumenttyp: Artikel i tidskrift
Förlag: The American Chemical Society


When a quantum dot is subjected to a thermal gradient, the temperature of electrons entering the dot can be determined from the dot's thermocurrent if the conductance spectrum and background temperature are known. We demonstrate this technique by measuring the temperature difference across a 15 nm quantum dot embedded in a nanowire. This technique can be used when the dot's energy states are separated by many kT and will enable future quantitative investigations of electron-phonon interaction, nonlinear thermoelectric effects, and the efficiency of thermoelectric energy conversion in quantum dots.


  • Nano Technology


  • ISSN: 1530-6992

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