Flux lattice and vortex structure in 2H-NbSe2in inclined fields
| Autor: | Joseph V. Waszczak, C. A. Murray, Harald F. Hess |
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| Rok vydání: | 1994 |
| Předmět: | |
| Zdroj: | Physical Review B. 50:16528-16540 |
| ISSN: | 1095-3795 0163-1829 |
| Popis: | The structure's of the flux-line lattice and of individual vortices on the surface of a uniaxial anisotropic superconductor 2H-${\mathrm{NbSe}}_{2}$ are studied for arbitrary magnetic fields using the scanning tunneling microscope. The basis vectors show a distortion consistent with bulk anisotropic London theory, however, their angular orientation with respect to the tilt direction differs by about 30\ifmmode^\circ\else\textdegree\fi{} from that predicted. Various lattice-buckling instabilities are observed when the field is inclined more than 80\ifmmode^\circ\else\textdegree\fi{} away from the c axis. The star-shaped structure of the core distorts into a spiky comet shape as the field is tilted into the plane. If the field is along the surface (perpendicular to the c axis), evenly spaced parallel streaks reveal the subsurface vortex spacing. |
| Databáze: | OpenAIRE |
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