Toward High Temperature Quasi-two-dimensional Superconductivity

V. V. Kabanov; I. I. Piyanzina; D. A. Tayurskii; R. F. Mamin

doi:10.1103/PhysRevB.98.094522

paper

Toward High Temperature Quasi-two-dimensional Superconductivity

arXiv:1802.08569 · doi:10.1103/PhysRevB.98.094522

Abstract

The demonstration of a quasi-two-dimensional electron gas (2DEG) and superconducting properties in LaAlO $_{3}$ /SrTiO $_{3}$ heterostructures has stimulated intense research activity in recent ten years. The 2DEG has unique properties that are promising for applications in all-oxide electronic devices. The superconductivity in such heterostructures has been observed below 300 mK. For superconductivity applications it is desirable to have more wide temperature of the existence range and the ability to control superconductivity properties by external stimulus. Based on first-principles calculations and theoretical consideration we show that all-oxide heterostructures incorporating ferroelectric constituent, such as BaTiO $_{3}$ /La $_{2}$ CuO $_{4}$ , allow creating 2DEG. We predict a possibility of a high temperature guasi-two-dimensional superconductivity state. This state could be switchable between superconducting and conducting states by ferroelectric polarization reversal. We also discuss that such structures must be more simple for preparation. The proposed concept of ferroelectrically controlled interface superconductivity offers the possibility to design novel electronic devices.

arXiv comment5 pages 3 figures. arXiv admin note: text overlap with arXiv:1710.03967

References in corpus (11)

Cited by in corpus (1)

Fabrication of high-temperature quasi-two-dimensional superconductors at the interface of a ferroelectric Ba $_{0.8}$ Sr $_{0.2}$ TiO $_{3}$ film and an insulating parent compound of La $_{2}$ CuO $_{4}$