Tunneling spectroscopy of Bi2Sr2CaCu2O8 single crystals

被引：11

作者：

Vedeneev, SI ^{[1
]}

Jansen, AGM ^{[1
]}

Wyder, P ^{[1
]}

机构：

[1] PN LEBEDEV PHYS INST,MOSCOW 117924,RUSSIA

来源：

PHYSICA B | 1996年 / 218卷 / 1-4期

关键词：

D O I：

10.1016/0921-4526(95)00597-8

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The tunneling spectra on Bi2Sr2CaCu2O8 Single crystals have been investigated in magnetic fields up to 20 T by using the break-junction technique. The second derivatives d(2)I/dV(2)(V) exhibited additional symmetrical structures at voltages above the energy gap. These structures were broadened in magnetic fields together with the gap structure, but remained at 20 T. The data were inverted by using the Rowell-McMillan program in order to obtain the alpha(2)F(omega) function for the electron-phonon interaction. The main features of alpha(2)F(omega) are well reproduced for different samples and can be reasonably compared with the phonon density of states obtained by inelastic neutron scattering.

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收藏

页码：213 / 216

页数：4

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