High performance temperature controller: application to the excess noise measurements of YBCO thermometers in the transition region
Guillet, B. · Mechin, L. · Robbes, D.
Original · EN
Dedicated read-out electronics was developed for low impedance resistive thermometers. Using this high performance temperature controller, the temperature dependence of the excess noise of a YBa2Cu307-d (YBCO) sample in the superconducting transition was monitored as a function of the current bias. The noise could reach 3.10-8 K Hz-1/2 at 1 Hz, 5 mA bias and 90 K.
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