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Ferroelectrics Volume 605, 2023 - Issue 1
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Research Article

Conductivity and photoconductivity of Ba0.8Sr0.2TiO3/LaMnO3 heterostructure

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
,
N. N. Garif’yanovZavoisky 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 21-26 | 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 are presented. It is shown that the electrical resistance of the heterostructure decreases significantly with cooling and exhibits metallic behavior at low temperatures, and its properties depend on magnetic field application. The effect of green (514 nm) and infrared (1028 nm) pulsed laser light on Ba0.8Sr0.2TiO3/LaMnO3 heterostructure electrical resistance leads to a decrease in the electrical resistance. It is assumed that the effect is related to polarization screening in the ferroelectric film, and atomic force microscopy studies confirm this hypothesis.

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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