Abstract
A simulation of the temperature distribution in a three-layer functional nanoelement consisting of NbN nanowires separated by layers of Al2O3 has been performed. A nanowire with a built-in area of normal metal is located in the middle layer of the device. The simulation is performed for all three wires included in the device. A constant current of ~0.9 from the Ic was passed through each of the wires. The time of transition of the upper nanowire to the normal state as a result of heating is estimated, taking into account its gradual warming up and the dependence of Ic on temperature.
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