Surface Сonductivity Dynamics in PbSnTe:In Films in the Vicinity of a Band Inversion

• Published in: Semiconductors (Woodbury, N.Y.) Vol. 53; no. 9; pp. 1182 - 1186
• Main Authors: Klimov, A. E., Akimov, A. N., Akhundov, I. O., Golyashov, V. A., Gorshkov, D. V., Ishchenko, D. V., Sidorov, G. Yu, Suprun, S. P., Tarasov, A. S., Epov, V. S., Tereshchenko, O. E.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01-09-2019; Springer Nature B.V
• Subjects: 2019; Aluminum oxide; Helium; Magnetic Materials; Magnetism; March 11–14; Nizhny Novgorod; Organic chemistry; Physics; Physics and Astronomy; Xxiii International Symposium “Nanophysics and Nanoelectronics”; PbSnTe:In solid solution; MIS structure; surface conductivity; field effect
• ISSN: 1063-7826; 1090-6479
• DOI: 10.1134/S1063782619090094

The features of transient processes under the field effect in PbSnTe:In films with a variation in the current up to a factor of 10
5
are studied at helium temperatures. These features qualitatively correspond to a model, in which a high concentration of traps with different parameters is present on the PbSnTe:In surface. The role of the surface is confirmed by a strong variation in the experimental characteristic after the chemical removal of native oxides from the PbSnTe:In surface and its passivation by an Al
2
O
3
layer.