Tunneling spectroscopy studies of SmB6 and YbB12

被引：0
|
作者：
Batkova, M. [1 ]
Batko, I. [1 ]
Konovalova, E. S. [2 ]
Shitsevalova, N. [2 ]
机构：
[1] Slovak Acad Sci, Inst Expt Phys, Kosice 04001, Slovakia
[2] NASU, Inst Problems Mat Sci, UA-252680 Kiev, Ukraine
来源：
ACTA PHYSICA POLONICA A | 2008年 / 113卷 / 01期
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中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Reported electron tunneling studies of SmB6 and YbB12 in the temperature region with a strongly temperature activated transport reveal a qualitative change of tunneling regime upon cooling. While the differential conductance curves above 50 K resemble the tunneling between two different metals, the spectra observed at 4.2 K are typical of the tunneling between a metal and a (narrow-gap) valence fluctuating semiconductor.
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页码：255 / 258
页数：4
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