SCANNING TUNNELING SPECTROSCOPY OF A VORTEX CORE FROM THE CLEAN TO THE DIRTY LIMIT

被引：138

作者：

RENNER, C ^{[1
]}

KENT, AD ^{[1
]}

NIEDERMANN, P ^{[1
]}

FISCHER, O ^{[1
]}

LEVY, F ^{[1
]}

机构：

[1] ECOLE POLYTECH FED LAUSANNE,INST PHYS APPL,CH-1015 LAUSANNE,SWITZERLAND

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 67卷 / 12期

关键词：

D O I：

10.1103/PhysRevLett.67.1650

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The local density of states of a superconducting vortex core has been measured as a function of disorder in the alloy system Nb1-xTaxSe2 using a low-temperature scanning tunneling microscope. The peak observed in the zero-bias conductance at a vortex center is found to be very sensitive to disorder. As the mean free path is decreased by substitutional alloying the peak gradually disappears and for x = 0.2 the density of states in the vortex center is found to be equal to that in the normal state. The vortex-core spectra hence may provide a sensitive measure of the quasiparticle scattering time.

引用

页码：1650 / 1652

页数：3

共 14 条

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