Frozen conductivity of lead telluride
Krylov I. P., Nadgornyi B. E.
The injection of hot electrons into an oxidized PbTe film at liquid-helium temperature, or illumination of the film, puts the film in a low-resistivity state. The inverse transition to the high-resistivity state can be induced by heating the sample to liquid-nitrogen temperature or by applying an electric field Ε > 103 V/cm.