Preparation and superconducting properties of the (Cu,C)Ba2Ca3Cu4O11+y films with zero-resistance transition temperature of 96 K

被引：10

作者：

Duan, Tianfeng ^{[1
,2
]}

Hao, Jiahao ^{[1
,2
]}

Chu, Haifeng ^{[3
]}

Wen, Hai-Hu ^{[1
,2
,4
]}

机构：

[1] Nanjing Univ, Ctr Superconducting Phys & Mat, Natl Lab Solid State Microstruct, Nanjing 210093, Peoples R China

[2] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

[3] Nanjing Xiaozhuang Univ, Coll Elect Engn, Nanjing 211171, Peoples R China

[4] Nanjing Univ, Collaborat Innovat Ctr Adv Microstruct, Nanjing 210093, Peoples R China

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2020年 / 33卷 / 02期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

cuprate superconductor film; PLD; (Cu; C)Ba2Ca3Cu4O11+y; OXYCARBONATE THIN-FILMS; GROWTH;

D O I：

10.1088/1361-6668/ab5eef

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

(Cu,C)Ba2Ca3Cu4O11+y is a nontoxic cuprate system with a superconducting transition temperature (T-c) of about 117 K for bulk samples. Recently, it is found that the bulk samples of this material synthesized under high pressure hold the highest irreversibility line among all the superconductors, which is very promising for the application in the liquid nitrogen temperature region. In this paper, we report successful growth of a-axis oriented (Cu,C)Ba2Ca3Cu4O11+y films by pulsed laser deposition method on LaAlO3 (001) substrates. The maximum zero-resistance T-c obtained in our work is as high as 96 K which is 18 K higher than the T-c reported previously in this system. The magnetization and resistivity measurements reveal that the superconducting properties of the films are significantly improved. These newly observed properties enhance the prospect of potential applications of this material.

引用

页数：5

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