Spatial Variation of Superconducting Gap: STM Measurements for NbN

Autor:	John R. Kirtley, S. I. Raider, Aaron P. Fein, Randall M. Feenstra
Rok vydání:	1987
Předmět:	Superconductivity Superconducting energy gap Materials science Condensed matter physics Band gap law Condensed Matter::Superconductivity General Engineering General Physics and Astronomy Spatial variability Scanning tunneling microscope Magnetic field law.invention
Zdroj:	Japanese Journal of Applied Physics. 26:817
ISSN:	1347-4065 0021-4922
DOI:	10.7567/jjaps.26s3.817
Popis:	A low temperature scanning tunneling microscope [1] was used to study the relationship between NbN film properties and topographic structure by simultaneously measuring the surface topography and the spatial variation of the superconducting energy gap. The images show significant variation of the energy gap with position. Regions with no superconducting energy gap arise when magnetic fields of 6 Tesla are applied and some evidence of a correlation between the surface and energy gap topography appears.
Databáze:	OpenAIRE
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