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Ferroelectrics Volume 605, 2023 - Issue 1
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Research Article

Conductivity and photoresistance of the film heterostructure Ba0.8Sr0.2TiO3/LaMnO3/Ba0.8Sr0.2TiO3 on the MgO substrate

A. O. ChibirevZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Kazan, RussiaView further author information
,
A. V. LeontyevZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Kazan, RussiaView further author information
,
T. M. SalikhovZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Kazan, RussiaView further author information
,
M. I. BannikovZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Kazan, RussiaView further author information
&
R. F. MaminZavoisky Physical-Technical Institute, FRC Kazan Scientific Center of RAS, Kazan, RussiaCorrespondence[email protected]
View further author information
Pages 15-20 | Received 24 Aug 2022, Accepted 12 Jan 2023, Published online: 15 Mar 2023
 
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Abstract

The results of the study of high conducting areas at the interface between ferroelectric and insulating oxides Ba0.8Sr0.2TiO3/LaMnO3/Ba0.8Sr0.2TiO3 on the MgO substrate are presented. It is shown that the electrical resistance of the heterostructure decreases significantly with cooling and exhibits metallic behavior at low temperatures. Green (514 nm) and infrared (1028 nm) laser illumination of Ba0.8Sr0.2TiO3/LaMnO3/Ba0.8Sr0.2TiO3 heterostructure leads to a decrease in the electrical resistance. The time constant of the negative photoresistance effect is ∼30 ÷ 50 s.

Additional information

Funding

The reported study was funded by Russian Science Foundation according to the research project No. 21-12-00179.

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