Direct observation of rectification effect of quantized magnetic flux

直接观察量子化磁通的整流效果

• 批准号: 21560344
• 负责人: ARISAWA Shunichi
• 金额: $ 2.91万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21560344/
• 关键词: 電気; 電子材料(半導体、誘電体、磁性体、超誘電体、有機物、絶縁体、超伝導体など); 走査SQUID顕微鏡; 磁束量子; 超伝導

The objective of this study is to reveal the behavior of the quantized flux(fluxon) in superconducting thin films with respect to fluxon rectification effect. Grain boundary in an oxide superconducting thin film works as a weak link. In this study, fluxons in superconducting thin films were observed by scanning SQUID(superconducting quantum interference device) microscopy(SSM). By using SSM, fluxons can be observed one by one. Further, measurement of method of pin-point current flow in a superconducting film by using SSM was established. Behavior of fluxons in films can be investigated with pin-point current vector monitored. Fabrication of thin films of Bi-based superconductor based on quasi-equilibrium was also investigated.

本研究的目的是揭示超导薄膜中量子化通量（fluxon）相对于通量子整流效应的行为。氧化物超导薄膜中的晶界是薄弱环节。本研究通过扫描SQUID（超导量子干涉装置）显微镜（SSM）观察超导薄膜中的通量子。通过使用SSM，可以一一观察通量子。此外，建立了使用SSM测量超导膜中的精确电流的方法。可以通过监测精确的电流矢量来研究薄膜中磁通子的行为。还研究了基于准平衡的铋基超导体薄膜的制备。

项目成果

Scanning SQUID Microscopy Observation of Grain Boundary Junction in Tri-Phase Epitaxy NdBa2Cu_3O_ Thin Film

三相外延NdBa2Cu_3O_<7-δ>薄膜晶界结的扫描SQUID显微镜观察

• 发表时间: 2010
• 作者: Shunichi Arisawa; Kyungsung Yun; Kazuya Mochiduki; Ienari Iguchi; Takeshi Hatano; Huabing Wang;Akira Ishii
• 通讯作者: Akira Ishii

酸化物超伝導体の層状構造に起因した物性の電子デバイスへの応用と課題

氧化物超导体层状结构引起的物理特性在电子器件中的应用及问题

• 发表时间: 2009
• 作者: 有沢俊一

Scanning SQUID Microscopy for Observing Small Currents in Oxide Superconductor Thin Films

用于观察氧化物超导薄膜中小电流的扫描 SQUID 显微镜

• 发表时间: 2009
• 作者: Shunichi Arisawa; Kyungsung Yun; Kazuya Mochiduki; Ienari Iguchi; Takeshi Hatano; Huabing Wang;Akira Ishii
• 通讯作者: Akira Ishii

Growth of Complex Epitaxial Multi-Component Oxide Thin Films and Heterostructures with Strong Anisotropy

具有强各向异性的复杂外延多组分氧化物薄膜和异质结构的生长

• 发表时间: 2011
• 作者: Kazuhiro Endoa; Petre Badica; Hidehito Nanto; Yoshinori Takei; Shunichi Arisawa; Hirofumi Yamasakia; Katherine Develos
• 通讯作者: Katherine Develos

ナノテクノロジーサミット2010-米国のナノテク10年-

2010 年纳米技术峰会 - 美国纳米技术十年 -

• 发表时间: 2011
• 作者: 有沢俊一