Low-temperature scanning tunneling spectroscopic observation of vortex in a NbCxN1−x thin film
- 12 October 1992
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 61 (15) , 1847-1849
- https://doi.org/10.1063/1.108393
Abstract
Scanning tunneling spectroscopic studies were performed on superconducting NbCxN1−x thin films at 4.2 K. An image of a spatial variation of a gap obtained in a magnetic field of 0.3 T showed a clear vortex lattice. Two types of the spatial variations of the local density of states around the vortex cores were observed. Type I had a normal center in the core, and a gap variation around the core was consistent with a theory for dirty limit superconductors. Type II did not have a normal center and the origin of this core is not yet clear.Keywords
This publication has 14 references indexed in Scilit:
- Magnetic Penetration Depths and Normal-State Resistivities of Epitaxial and Polycrystalline NbCxN1-x FilmsJapanese Journal of Applied Physics, 1992
- Scanning tunneling spectroscopy of a vortex core from the clean to the dirty limitPhysical Review Letters, 1991
- Scanning tunneling spectroscopic studies of superconducting NbN single crystal thin films at 4.2 KIEEE Transactions on Magnetics, 1991
- Scanning tunneling microscopy of the Abrikosov flux lattice with ferromagnetic probesApplied Physics Letters, 1990
- Vortex-core structure observed with a scanning tunneling microscopePhysical Review Letters, 1990
- Magnetic field observation of a single flux quantum by electron-holographic interferometryPhysical Review Letters, 1989
- Scanning-Tunneling-Microscope Observation of the Abrikosov Flux Lattice and the Density of States near and inside a FluxoidPhysical Review Letters, 1989
- Local tunneling barrier height images obtained with the scanning tunneling microscopeSurface Science, 1987
- Thermal Oxidation of Niobium Nitride Films at Temperatures from 20°–400°C: I . The Surface ReactionJournal of the Electrochemical Society, 1983
- The direct observation of individual flux lines in type II superconductorsPhysics Letters A, 1967