Thermoelectric corrections to quantum voltage measurement

Justin P. Bergfield, Charles A Stafford

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A generalization of Büttiker's voltage probe concept for nonzero temperatures is an open third terminal of a quantum thermoelectric circuit. An explicit analytic expression for the thermoelectric correction to an ideal quantum voltage measurement in linear response is derived and interpreted in terms of local Peltier cooling/heating within the nonequilibrium system. The thermoelectric correction is found to be large (up to ±24% of the peak voltage) in a prototypical ballistic quantum conductor (graphene nanoribbon). The effects of measurement nonideality are also investigated. Our findings have important implications for precision local electrical measurements.

Original languageEnglish (US)
Article number235438
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume90
Issue number23
DOIs
StatePublished - Dec 29 2014

Fingerprint

Voltage measurement
electrical measurement
Nanoribbons
Carbon Nanotubes
Graphite
Electric potential
electric potential
Ballistics
Graphene
ballistics
graphene
conductors
Cooling
cooling
Heating
heating
Networks (circuits)
probes
Temperature
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Thermoelectric corrections to quantum voltage measurement. / Bergfield, Justin P.; Stafford, Charles A.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 23, 235438, 29.12.2014.

Research output: Contribution to journalArticle

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