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Imaging of Superconducting Vortices

 

作者: H. F. Hess,  

 

期刊: AIP Conference Proceedings  (AIP Available online 1991)
卷期: Volume 241, issue 1  

页码: 95-100

 

ISSN:0094-243X

 

年代: 1991

 

DOI:10.1063/1.41407

 

出版商: AIP

 

数据来源: AIP

 

摘要:

The low temperature scanning tunneling microscope, STM, is capable of measuring the local density of states across a surface of a superconductor. This allows vortices and the flux lattice to be imaged by measuring the spatial variations in the local tunneling spectra. Different vortex energy eigenstates can be imaged depending on the tip sample bias. The evolution of the conductance spectrum as the tip passes over the vortex core reveals several subgap peaks. The energy position of these peaks vary with radius and may provide a measure of the coherence length. Angle dependent anisotropies may reflect further complications from the details of the Fermi surface.

 

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