P-type transparent superconductivity in a layered oxide.

ABSTRACT: Development of p-type transparent conducting materials has been a challenging issue. The known p-type transparent conductors unsatisfy both of high transparency and high conductivity nor exhibit superconductivity. Here, we report on epitaxial synthesis, excellent p-type transparent conductivity, and two-dimensional superconductivity of Li_1-x NbO₂. The LiNbO₂ epitaxial films with NbO₂ sheets parallel to (111) plane of cubic MgAl₂O₄ substrates were stabilized by heating amorphous films. The hole doping associated with Li⁺ ion deintercalation triggered superconductivity below 4.2 kelvin. Optical measurements revealed that the averaged transmittance to the visible light of ~100-nanometer-thick Li_1-x

SUBMITTER: Soma T 

PROVIDER: S-EPMC7439643 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature