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Ferroelectrics Volume 542, 2019 - Issue 1: Proceedings of SPM-2018 and IWMN-2018, Part II of II
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Articles

Quasi-two-dimensional electron system at the interface between antiferromagnet LaMnO3 and ferroelectric Ba0.8Sr0.2TiO3

D. P. PavlovZavoisky Physical-Technical Institute of FRC KazanSC RAS, Kazan, Russia; View further author information
,
N. N. Garif’yanovZavoisky Physical-Technical Institute of FRC KazanSC RAS, Kazan, Russia; View further author information
,
A. V. LeontyevZavoisky Physical-Technical Institute of FRC KazanSC RAS, Kazan, Russia; View further author information
,
D. K. ZharkovZavoisky Physical-Technical Institute of FRC KazanSC RAS, Kazan, Russia; View further author information
,
V. V. KabanovZavoisky Physical-Technical Institute of FRC KazanSC RAS, Kazan, Russia; ;Department for Complex Matter, Jozef Stefan Institute, Ljubljana, SloveniaView further author information
&
R. F. MaminZavoisky Physical-Technical Institute of FRC KazanSC RAS, Kazan, Russia; Correspondence[email protected]
View further author information
Pages 1-6 | Received 29 Aug 2018, Accepted 26 Nov 2018, Published online: 09 Jul 2019
 
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Abstract

We investigate the properties of quasi-two-dimensional electron gas (q2DEG) at the interface between ferroelectric oxide and insulating oxide in Ba0.8Sr0.2TiO3/LaMnO3 heterostructure. The influence of light on the electrical resistance of this heterostructure has been studied. It is found that in the samples with the film with ferroelectric polarization axis directed perpendicular to the surface of the single crystal, the electrical resistance decreases significantly with temperature, exhibiting metallic behavior below 160 K. The transition to the state with q2DEG at the interface is demonstrated. It is shown that the resistivity of the interface BSTO/LMO decreases under illumination by ultraviolet light.

Additional information

Funding

The reported study was funded by Russian Scientific Foundation, research project No. 18-12-00260.

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