Paramagnetic Meissner Effect at High Fields in Y1-xCaxBa2Cu3O7-δ (x=0.05, 0.125, 0.2) films

被引：2

作者：

Li, Qing ^{[1
]}

Feng, Zhenjie ^{[1
,2
,3
]}

Yu, Chuan ^{[1
]}

Chu, Hao ^{[4
]}

Yin, Xunqing ^{[1
]}

Cao, Yiming ^{[1
]}

Lu, Bo ^{[5
]}

Jing, Chao ^{[1
]}

Deng, Dongmei ^{[1
]}

Cao, Shixun ^{[1
,2
,3
]}

Zhang, Jincang ^{[2
]}

机构：

[1] Shanghai Univ, Dept Phys, Shanghai 200444, Peoples R China

[2] Shanghai Univ, Mat Genome Inst, Shanghai 200444, Peoples R China

[3] Shanghai Key Lab High Temp Superconductors, Shanghai 200444, Peoples R China

[4] CALTECH, Dept Appl Phys, Pasadena, CA 91125 USA

[5] Shanghai Univ, Lab Microstruct, Shanghai 200444, Peoples R China

来源：

JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2017年 / 30卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Paramagnetic Meissner effect; Ca-doped; YBCO; MELT-TEXTURED YBA2CU3O7-DELTA; SUPERCONDUCTORS; CRYSTALS; CA;

D O I：

10.1007/s10948-016-3705-x

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on systematic field-cooled magnetization experiments on three different Y1-x Ca (x) Ba2Cu3O7-delta (x = 0.05, 0.125, 0.2) film samples. The samples are made by pulsed laser deposition (PLD) method. Magnetic fields ranging from 0.02 T up to 5 T are applied and a paramagnetic response related to the superconducting state is observed when a strong field is applied parallel to the Cu-O plane. The magnitude of the high field paramagnetic moment (HFPME) increases as the field is increased. For x < 0.2 the paramagnetic moment increases with x. However, for x > 0.2, the paramagnetic moment abruptly decreases. We discuss our results in terms of the flux compression scenario in the sample modulated by Ca concentration.

引用

页码：293 / 295

页数：3

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