Observation of multiple superconducting gaps in Fe1+yTe1-xSex via a nanoscale approach to point-contact spectroscopy

被引：4
|
作者：
Peng, Haibing [1 ]
De, Debtanu
Wu, Zheng
Diaz-Pinto, Carlos
机构：
[1] Univ Houston, Dept Phys, Houston, TX 77204 USA
来源：
JOURNAL OF PHYSICS-CONDENSED MATTER | 2012年 / 24卷 / 45期
关键词：
IRON;
D O I：
10.1088/0953-8984/24/45/455703
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
We report a novel experimental approach to point-contact Andreev reflection spectroscopy with diagnostic capability via a unique design for nanoscale normal metal/superconductor devices with excellent thermomechanical stability, and have employed this method to unveil the existence of two superconducting energy gaps in iron chalcogenide Fe1+yTe1-xSex, which is crucial for understanding its pairing mechanism. This work opens up new opportunities to study gap structures in superconductors and elemental excitations in solids.
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页数：6
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