Open AccessTailoring quasi-two-dimensional high conductivity and superconductivity areas at the interfaces of ferroelectric/dielectric heterostructures
Author(s) -
Р. Ф. Мамин,
Д. П. Павлов,
Irina Piyanzina,
Yury Lysogorskiy,
В. М. Мухортов,
Tadashi Adachi,
Takayuki Kawamata,
Yuna Koike,
A. M. Balbashev,
D. A. Tayurskiı̆,
V. V. Kabanov
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/699/1/012026
Subject(s) - heterojunction , ferroelectricity , materials science , superconductivity , condensed matter physics , dielectric , oxide , electrical resistivity and conductivity , conductivity , transition temperature , optoelectronics , chemistry , electrical engineering , physics , metallurgy , engineering
The results of the investigations of high conducting and superconducting areas at the interfaces between ferroelectric oxide and insulating oxide are presented. The numerical simulations of BaTiO 3 /LaMnO 3 and BaTiO 3 /La 2 CuO 4 heterostructures have been performed. It is found that in the samples of the Ba 0.8 Sr 0.2 TiO 3 /LaMnO 3 heterostructure the electrical resistance decreases significantly and exhibits metallic behaviour at low temperatures for the case when the c axis of ferroelectric film is directed along the normal to the surface of the single crystal. The superconducting behaviour with transition temperature T c about 30K has been found at the interface of the Ba 0.8 Sr 0.2 TiO 3 /La 2 CuO 4 heterostructure. The proposed concept promises the ferroelectrically controlled interface conductivity and superconductivity.