Direct measurement of single-vortex diameters by electron holography
- 1 July 1994
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 50 (1) , 567-570
- https://doi.org/10.1103/physrevb.50.567
Abstract
The magnetic-field distribution of vortices in single-crystal Nb thin foil specimens has been quantitatively measured with high spatial resolution by electron holography using a 300-kV field-emission transmission electron microscope. The diameters of single vortices were observed to broaden with increasing temperature under constant applied magnetic field. Vortex diameters varied from ∼150 nm at 4.5 K to ∼230 nm at 8 K, in agreement with the expected behavior. While vortices broadened with temperature, the total flux enclosed by them was constant.Keywords
This publication has 15 references indexed in Scilit:
- Vortex Pinning in Ion-Irradiated NbStudied by Scanning Tunneling MicroscopyPhysical Review Letters, 1994
- Lorentz microscopy of vortex lattices (flux lines) in niobiumPhysical Review B, 1994
- Vortex configuration and dynamics in thin films by Lorentz microscopyPhysical Review Letters, 1993
- Direct observation of magnetic flux lattice melting and decomposition in the high-Tc superconductor Bi2.15Sr1.95CaCu2O8+xNature, 1993
- Real-time observation of vortex lattices in a superconductor by electron microscopyNature, 1992
- Scanning Hall probe microscopyApplied Physics Letters, 1992
- Observation of a 0.055 nm Spacing Lattice Image in Gold using a Field Emission Electron MicroscopeJapanese Journal of Applied Physics, 1990
- Anisotropic vortex structure inPhysical Review Letters, 1989
- Two-dimensional imaging of trapped magnetic flux quanta in Josephson tunnel junctionsPhysical Review B, 1987
- The investigation of magnetic domain structures in thin foils by electron microscopyJournal of Physics D: Applied Physics, 1984