Electron tunneling into intermediate valence intermetallics

Electron tunneling into intermediate valence intermetallics
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电子隧道进入中间价金属间化合物

DOI:
10.1016/0304-8853(85)90489-5
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发表时间:
1985
影响因子:
2.7
通讯作者:
G. Güntherodt
G. Güntherodt
中科院分区:
材料科学3区
文献类型:
--
作者:
W. Schmitt;G. Güntherodt

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用GaAs肖特基势垒点接触隧穿方法研究了中价金属间化合物(YbInAu_2,YbAl_2,CeCu_2Si_2和CeRu_2)的电子隧穿.没有发现IV型超导体的不对称性,也没有发现强重整化隧穿态密度的迹象,IV型超导体CeRu_2(Tc= 6K)的能隙为2Δ =(3.3±0.3 meV).
Electron tunneling into Intermediate-Valent (IV) intermetallics (YbInAu2, YbAl2, CeCu2Si2and CeRu2) has been investigated by GaAs Schottky barrier point-contact tunneling. No IV-related asymmetries or indications for a strongly renormalized tunneling density of states are found. The IV superconductor CeRu2(Tc= 6K) shows a strongly enlarged gap of 2Δ = (3.3±0.3 meV).