Electronic Refrigeration of a Two-Dimensional Electron Gas

Prance, J. R. and Smith, C. G. and Griffiths, J. P. and Chorley, S. J. and Anderson, D. and Jones, G. A. C. and Farrer, I. and Ritchie, D. A. (2009) Electronic Refrigeration of a Two-Dimensional Electron Gas. Physical review letters, 102 (14). -. ISSN 0031-9007

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Abstract

Measurements are presented of a device designed to cool a 6 mu m(2) region of 2D electron gas using quantum dots. Electrostatic effects are found to be significant in the device, and a model that accounts for them is developed. At ambient electron temperatures above 120 mK the results are consistent with the model and the base temperature of the cooled region is estimated. At an ambient electron temperature of 280 mK, the 6 mu m(2) region is found to be cooled below 190 mK. Below 120 mK the results deviate from predictions, which is attributed to reduced electron-electron scattering rates.

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Uncontrolled Keywords:
/dk/atira/pure/researchoutput/libraryofcongress/qc
Subjects:
ID Code:
59555
Deposited By:
Deposited On:
26 Oct 2012 15:10
Refereed?:
Yes
Published?:
Published
Last Modified:
20 Oct 2020 02:14