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): 146602. -. ISSN 0031-9007
Full text not available from this repository.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.