期刊
ADVANCED SCIENCE
卷 3, 期 6, 页码 -出版社
WILEY
DOI: 10.1002/advs.201500295
关键词
-
资金
- MICIN (NANOSELECT) [CSD2007-00041, MAT2014-51778-C2-1-R]
- Generalitat de Catalunya [2014SGR 753, Xarmae]
- EU [EU-FP7 NMP-LA-2012-280432]
- EU (Cost Action) [MP1201]
- MINECO [SEV-2015-0496, FIS2013-45469-C4-3-R]
- US DOE Office of Basic Energy Sciences, Materials Sciences and Engineering Division
- Scientific User Facilities Division
- NanoAraCat
- ERC [239739 STEMOX]
- MICINN-Spain [JCI-2011-09428]
- U.S. DOE [DE-FG02-09ER46554]
- McMinn Endowment
- Ramon y Cajal program [RYC-2012-11709, RYC-2013-12448]
Defects in ceramic materials are generally seen as detrimental to their functionality and applicability. Yet, in some complex oxides, defects present an opportunity to enhance some of their properties or even lead to the discovery of exciting physics, particularly in the presence of strong correlations. A paradigmatic case is the high-temperature superconductor YBa2Cu3O7-delta(Y123), in which nanoscale defects play an important role as they can immobilize quantized magnetic flux vortices. Here previously unforeseen point defects buried in Y123 thin films that lead to the formation of ferromagnetic clusters embedded within the superconductor are unveiled. Aberration-corrected scanning transmission microscopy has been used for exploring, on a single unit-cell level, the structure and chemistry resulting from these complex point defects, along with density functional theory calculations, for providing new insights about their nature including an unexpected defect-driven ferromagnetism, and X-ray magnetic circular dichroism for bearing evidence of Cu magnetic moments that align ferromagnetically even below the superconducting critical temperature to form a dilute system of magnetic clusters associated with the point defects.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据