Nanoscale Superconductivity
Nanoscale Superconductivity
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纳米级超导
DOI：
10.1142/s0217979212300137
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
Hidemi Nagao
中科院分区：
文献类型：
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作者：
Sergei P. Kruchinin;Hidemi Nagao
我们处理纳米尺度的超导问题。纳米尺度的超导电性一直是凝聚态物质研究的热点之一。最近的技术和实验已经制备了高质量的超导MgB2纳米颗粒。本文将Richardson精确解推广到两带系统，研究了超小晶粒中的两带超导性，发展了纳米尺度铁磁粒子与超导体之间的相互作用理论。还研究了纳米双能隙超导体的性质以及超导超小颗粒中的近藤效应。介绍了约瑟夫森效应的基本原理，分析了它在量子计算中的应用。
We deal with the problem of nanoscale superconductivity. Nanoscale superconductivity remains to be one of the most interesting research areas in condensed mater. Recent technology and experiments have fabricated high-quality superconducting MgB2nanoparticles. We consider the two-band superconductivity in ultrasmall grains, by extending the Richardson exact solution to two-band systems, and develop the theory of interactions between nano-scale ferromagnetic particles and superconductors. The properties of nano-sized two-gap superconductors and the Kondo effect in superconducting ultrasmall grains are investigated as well. The theory of the Josephson effect is presented, and his application to quantum computing are analyzed.