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 language | English (US) |
|---|---|
| Article number | 235438 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 90 |
| Issue number | 23 |
| DOIs | |
| State | Published - Dec 29 2014 |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
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Bergfield, J. P., & Stafford, C. A. (2014). Thermoelectric corrections to quantum voltage measurement. Physical Review B - Condensed Matter and Materials Physics, 90(23), [235438]. https://doi.org/10.1103/PhysRevB.90.235438