Annealing condition dependence of the superconducting property and the pseudo-gap in the protect-annealed electron-doped cuprates

Title & Authors
Annealing condition dependence of the superconducting property and the pseudo-gap in the protect-annealed electron-doped cuprates
Jung, Woobeen; Song, Dongjoon; Cho, Su Hyun; Kim, Changyoung; Park, Seung Ryong;

Abstract
Annealing as-grown electron-doped cuprates under a low oxygen-partial-pressure condition is a necessary step to achieve superconductivity. It has been recently found that the so-called protect annealing results in much better superconducting properties in terms of the superconducting transition temperature and volume fraction. In this article, we report on angle-resolved photoemission spectroscopy studies of a protect-annealed electron-doped cuprate $\small{Pr_{0.9}La_{1.0}Ce_{0.1}CuO_4}$ on annealing condition dependent superconducting and pseudo-gap properties. Remarkably, we found that the one showing a better superconducting property possesses almost no pseudo-gap while others have strong pseudo-gap feature due to an anti-ferromagnetic order.
Keywords
protect-annealed electron-doped cuprate;angle-resolved photoemission spectroscopy;pseudo-gap;
Language
English
Cited by
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