Single-Electronic Radio-Frequency Refrigerator

Kafanov, S. and Kemppinen, A. and Pashkin, Yuri and Meschke, M. and Tsai, J. S. and Pekola, J. P. (2009) Single-Electronic Radio-Frequency Refrigerator. Physical review letters, 103 (12): 120801. -. ISSN 0031-9007

Abstract

We demonstrate experimentally that a hybrid single-electron transistor with superconducting leads and a normal-metal island can be refrigerated by an alternating voltage applied to the gate electrode. The simultaneous measurement of the dc current induced by the rf gate through the device at a small bias voltage serves as an in situ thermometer.