Published July 24, 2009
| Version Published + Submitted
Journal Article
Open
Hot-electron thermocouple and the diffusion thermopower of two-dimensional electrons in GaAs
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1.
California Institute of Technology
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2.
Sandia National Laboratories
Abstract
A simple hot-electron thermocouple is realized in a two-dimensional electron system (2DES) and used to measure the diffusion thermopower of the 2DES at zero magnetic field. This hot-electron technique, which requires no micron-scale patterning of the 2DES, is much less sensitive than conventional methods to phonon-drag effects. Our thermopower results are in good agreement with the Mott formula for diffusion thermopower for temperatures up to T~2 K.
Additional Information
© 2009 The American Physical Society. Received 4 March 2009; published 23 July 2009. We thank Gil Refael, Sankar Das Sarma, and Ady Stern for helpful discussions. This work was supported via DOE Grant No. DE-FG03-99ER45766 and Microsoft Project Q.Attached Files
Published - Chickering2009p5537Phys_Rev_Lett.pdf
Submitted - 0903.0835.pdf
Files
0903.0835.pdf
Additional details
Identifiers
- Eprint ID
- 14878
- Resolver ID
- CaltechAUTHORS:20090808-142459891
Related works
- Describes
- https://arxiv.org/abs/0903.0835 (URL)
Funding
- Department of Energy (DOE)
- DE-FG03-99ER45766
- Microsoft
Dates
- Created
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2009-09-03Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field