具有磁离子的双作用分子超导体
Bin Zhang1, Hisashi Tanaka, Hideki Fujiwara
1Institute for Molecular Science, Myodaiji, Okazaki, Aichi 444-8585, Japan.
Journal of the American Chemical Society
|August 22, 2002
概括
研究人员发现了使用bis (乙烯基) 素 (BETS) 分子的双重作用有机超导体. 这些材料允许外部磁场精确控制导电特性,开启或关闭超导.
科学领域:
- 材料科学 材料科学 材料科学
- 凝聚物质物理学 凝聚物质物理学
- 有机电子 有机电子
背景情况:
- 有机超导体具有可调节的电子特性.
- 通过外部电场控制导电性对于先进的电子技术至关重要.
- 基于双乙烯基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基基
研究的目的:
- 研究具有磁性可控制性质的双作用有机超导体.
- 探索BETS系统中磁离子和超导状态之间的关系.
- 通过使用磁场,逐步控制绝缘,金属和超导状态.
主要方法:
- 有机导电层的合成基于bis (乙烯基) 素 (BETS) 分子.
- 将磁性离子 (例如FeBr4,Fe0.4Ga0.6Cl4) 纳入晶体结构.
- 对导电平面平行和垂直的外部磁场的应用.
主要成果:
- 发现了双作用有机超导体,其中导电性受到磁场的严格控制.
- 在kappa-BETS2FeBr4中,由于离子层的超磁性,可以证明如何打开或关闭超导状态.
- 在lambda-BETS2Fe0.4Ga0.6Cl4中,通过调整磁场,实现绝缘,金属和超导状态之间的逐步过渡.
结论:
- 带有磁离子的BETS基有机材料具有独特的场控制超导特性.
- 离子层的超磁性是切换超导性的关键.
- 这些发现为具有精确调节状态的新型电子设备铺平了道路.
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