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As you know, there is an effect called negative differential resistance in some electric devices and materials, but I could not find any article or book or any other reference to talk about the physical reason of this effect. I mean, what happens for electrons to show such a behavior? (NDR: decrease in current by increasing voltage.)

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  • $\begingroup$ Can be achieved by resonance effects have a look at page 190. I guess there are other ways to get an NDR as well. $\endgroup$ – mikuszefski May 22 '17 at 11:19
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    $\begingroup$ It depends what kind of device you are looking at. The mechanism in a glow tube is different from in a Gunn diode and different from the mechanism in a tunnel diode, just for starters. $\endgroup$ – The Photon May 22 '17 at 18:23
  • $\begingroup$ Yeah. I think you are completely right. I look for NDR reason in nanoribbons ,specifically!!! $\endgroup$ – P.A.M May 22 '17 at 18:30

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