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(Color online) (a) Schematic description of the experiment. (b) Heat exchange diagram for modeling the system. The sample and the sample-holder are connected with a thermal link . At the same time, both parts are connected with a thermal bath at a constant temperature T0 through the thermal links and for the sample and the sample-holder, respectively.
(Color online) Temperature difference as a function of time for different applied voltages. The voltage is applied during 600 s and then it is turned off. The lines are the fitting function using Eq. (3).
(Color online) Fitting parameters obtained from the measurements shown in Fig. 2 at different applied voltages. Characteristic times (panel a), A 1 (panel b), and (panel c). The Joule heating contribution is presented as a dotted line in panel (c). Circles and triangles indicate increasing and decreasing voltage, respectively.
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