Reflexion of ballistic electrons at interfaces with heavy-fermion metals

被引：7

作者：

Gloos, K. ^{[1
]}

Martin, F. ^{[1
]}

Schank, C. ^{[1
]}

Geibel, C. ^{[1
]}

Steglich, F. ^{[1
]}

机构：

[1] Tech Hsch Darmstadt, Inst Festkorperphys, SFB 252,Hochschulstr 8, D-64289 Darmstadt, Germany

来源：

PHYSICA B-CONDENSED MATTER | 1995年 / 206卷

关键词：

D O I：

10.1016/0921-4526(94)00434-W

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

An interface between a heavy-fermion compound and a simple metal should be highly reflecting for ballistic electrons. Since the ratio of Fermi velocities from both sides of the interface is of order 100, the transmission probability should be of order 1% only. We present point-contact experiments on CeCu2Ge2 and CeCu2Si2 revealing almost total reflection of ballistic electrons. From the measured reflection coefficient we estimated the Fermi velocities of CeCu2Ge2 (10 km/s) and CeCu2Si2 (1.5 km/s).

引用

页码：282 / 284

页数：3

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