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American Association for the Advancement of Science, Science, 6530(371), p. 716-721, 2021

DOI: 10.1126/science.aba5511

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Two-dimensional superconductivity and anisotropic transport at KTaO <sub>3</sub> (111) interfaces

Journal article published in 2021 by Changjiang Liu ORCID, Xi Yan ORCID, Dafei Jin ORCID, Yang Ma ORCID, Haw-Wen Hsiao, Yulin Lin, Terence M. Bretz-Sullivan, Xianjing Zhou ORCID, John Pearson, Brandon Fisher ORCID, J. Samuel Jiang, Wei Han ORCID, Jian-Min Zuo ORCID, Jianguo Wen ORCID, Dillon D. Fong ORCID and other authors.
This paper was not found in any repository, but could be made available legally by the author.
This paper was not found in any repository, but could be made available legally by the author.

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Abstract

A superconducting interface Interfaces between materials can harbor quantum states that belong to neither of the materials. A classic example is the superconducting interface between two insulating oxides, LaAlO 3 and SrTiO 3 , with a critical temperature of around 200 millikelvin. Liu et al. observed superconductivity at a different interface—formed between KTaO 3 as a substrate and an overlayer of either EuO or LaAlO 3 —at a considerably higher temperature of about 2 kelvin. Transport measurements displayed anisotropy, which may indicate an unusual superconducting state. Science , this issue p. 716