Magnetic-field modulation of the Josephson effect between polycrystalline CeCu2Si2 and Al
Magnetic-field modulation of the Josephson effect between polycrystalline CeCu2Si2 and Al
复制标题
多晶 CeCu2Si2 和 Al 之间约瑟夫森效应的磁场调制
DOI：
10.1088/1742-6596/273/1/012086
复制
发表时间：
2011
期刊：
影响因子：
--
通讯作者：
Y. Oda
中科院分区：
文献类型：
--
作者：
A. Sumiyama;N. Miyakawa;Y. Ushida;G. Motoyama;A. Yamaguchi;Y. Oda
在CeCu2Si2表面的结处测量了CeCu2Si2和Al之间的约瑟夫森临界电流Ic。在Ic的磁场H依赖性中，在零磁场处观察到一个显著的最大峰，这表明从不同取向的CeCu2Si2晶体流出的约瑟夫森电流在H = 0时处于相态。如果CeCu2Si2处于dx2−y2波状态，其中序参量的符号随晶体取向而变化，则在表面诱导的s波分量被认为是Ic(H)图案类s波行为的可能来源。
Josephson critical current Ic between a polycrystalline CeCu2Si2 and Al has been measured for the junctions on a CeCu2Si2 surface. A dominant maximum peak at zero magnetic field is observed in the magnetic field H dependence of Ic, suggesting that the Josephson currents flowing from variously-oriented crystallites of CeCu2Si2 are in phase at H = 0. If CeCu2Si2 is in the dx2−y2-wave state, in which the sign of the order parameter changes according to the crystallographic orientation, an s-wave component induced on the surface is considered as a possible origin of the s-wave-like behavior of Ic(H) patterns.
重费米子超导CelIn_5中约瑟夫森效应的磁场调制
DOI：
--
发表时间：
2007
期刊：
Journal of Magnetism and Magnetic Materials 310
影响因子：
--
作者：
Y. Sugibayashi;Y. Saiga;and D. S. Hirashima;Akihiko Sumiyama;Akihiko Sumiyama;Akihiko Sumiyama
通讯作者：
Akihiko Sumiyama