Physics – Condensed Matter – Disordered Systems and Neural Networks
Scientific paper
2008-10-23
Phys. Rev. Lett. 102, 176803 (2009)
Physics
Condensed Matter
Disordered Systems and Neural Networks
Final version, as published; 4 pages, 3 figures
Scientific paper
10.1103/PhysRevLett.102.176803
We argue that giant jumps of current at finite voltages observed in disordered samples of InO, TiN and YSi manifest a bistability caused by the overheating of electrons. One of the stable states is overheated and thus low-resistive, while the other, high-resistive state is heated much less by the same voltage. The bistability occurs provided that cooling of electrons is inefficient and the temperature dependence of the equilibrium resistance, R(T), is steep enough. We use experimental R(T) and assume phonon mechanism of the cooling taking into account its strong suppression by disorder. Our description of details of the I-V characteristics does not involve adjustable parameters and turns out to be in a quantitative agreement with the experiments. We propose experiments for more direct checks of this physical picture.
Aleiner Igor L.
Altshuler Boris L.
Kravtsov Vladimir E.
Lerner Igor V.
No associations
LandOfFree
Jumps in current-voltage characteristics in disordered films does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Jumps in current-voltage characteristics in disordered films, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Jumps in current-voltage characteristics in disordered films will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-681223