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

IF 0.2 Q4 PHYSICS, APPLIED

Progress in Superconductivity and Cryogenics Pub Date : 2016-06-30 DOI:10.9714/PSAC.2016.18.2.014

Woobeen Jung, D. Song, Suejin Cho, Changyoung Kim, S. Park

引用次数: 0

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 Pr0.9La1.0Ce0.1CuO4 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.

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保护退火电子掺杂铜酸盐超导性能与赝隙的退火条件依赖性

在低氧分压条件下退火生长的电子掺杂铜酸盐是实现超导性的必要步骤。最近发现，从超导转变温度和体积分数的角度来看，所谓的保护退火可以获得更好的超导性能。在本文中，我们报道了保护退火电子掺杂铜Pr0.9La1.0Ce0.1CuO4的角分辨光发射光谱研究，其超导性和赝隙性取决于退火条件。值得注意的是，我们发现超导性能较好的材料几乎没有赝隙，而其他材料由于反铁磁序而具有很强的赝隙特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Progress in Superconductivity and Cryogenics PHYSICS, APPLIED-

CiteScore

0.40

自引率

33.30%

发文量

期刊介绍： Progress in Superconductivity and Cryogenics is the official publication of The Korea Institute of Applied Superconductivity and Cryogenics and the Korean Superconductivity Society. It was launched in 1999, and accepts original research articles and review papers on research on superconductivity and related fields of physics, electronic devices, materials science, large-scale applications for magnets, power and energy, and cryogenics. The Journal is published quarterly in March, June, September, and December each year. Supplemental issues are published occasionally. The official title of the journal is ''Progress in Superconductivity and Cryogenics'' and the abbreviated title is ''Prog. Supercond. Cryog.'' All submitted manuscripts are peer-reviewed by two reviewers. The text must be written in English. All the articles in this journal are KCI and SCOPUS as of 2015. The URL address of the journal is http://psac.kisac.org where full text is available. This work was supported by the Korean Federation of Science and Technology Societies grant funded by the Korea government.