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 |
Fingerprint
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 journal › Article
}
TY - JOUR
T1 - Thermoelectric corrections to quantum voltage measurement
AU - Bergfield, Justin P.
AU - Stafford, Charles A
PY - 2014/12/29
Y1 - 2014/12/29
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84920278094&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84920278094&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.90.235438
DO - 10.1103/PhysRevB.90.235438
M3 - Article
AN - SCOPUS:84920278094
VL - 90
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 23
M1 - 235438
ER -