Negative temperature co-efficient of reistance

hello everyone,

Could you provide the explanation for the negative coefficient of thermal resistance of a JFET device in terms of electrons, holes and their transport mechanism etc. In want to know this behavior in quantitative terms.

regards,

proffy

www.springer.com/cda/content/document/cda_downloaddocument/9781461407478-c1.pdf?SGWID=0-0-45-1268751-p174130080 negative temperature coefficient of jfet in terms of electrons hole
i think this link will be usefull to you