Nanoscale temperature sensing using the Seebeck effect

F. L. Bakker*, J. Flipse, B. J. van Wees

*Corresponding author for this work

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Abstract

We experimentally study the effect of Joule heating on the electron temperature in metallic nanoscale devices and compare the results with a diffusive 3D finite element model. The temperature is probed using four thermocouples located at different distances from the heater. A good quantitative agreement, within 30%, between the experimental data and the modeling is obtained. Since we observe a strong thickness dependence of the electrical conductivity of our metals, we find that the Joule heating in nanoscale devices is often incorrectly calculated if bulk conductivities are used. Furthermore, Peltier heating/cooling is investigated and the combination with Seebeck temperature measurements provides us with a method to determine the Seebeck coefficient of a material.
Original languageEnglish
Article number084306
Pages (from-to)084306-1-084306-4
Number of pages4
JournalJournal of Applied Physics
Volume111
Issue number8
DOIs
Publication statusPublished - 15-Apr-2012

Keywords

  • SPIN
  • CONDUCTIVITY
  • FILMS

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