Concepedia

Tunneling Spectroscopy and Vortex Imaging in Boron-Doped Diamond

Benjamin Sacépé, C. Chapelier, C. Marcenat, J. Kačmarčík, T. Klein, M. Bernard, E. Bustarret

Physical Review Letters · 2006 · 74 citations · 14 references

DOIFull text

Open access

Concepts

Abstract

We present the first scanning tunneling spectroscopy study of single-crystalline boron-doped diamond. The measurements were performed below 100 mK with a low temperature scanning tunneling microscope. The tunneling density of states displays a clear superconducting gap. The temperature evolution of the order parameter follows the weak-coupling BCS law with Delta(0)/kBTc approximately 1.74. Vortex imaging at low magnetic field also reveals localized states inside the vortex core that are unexpected for such a dirty superconductor.

References

14

Bound Fermion states on a vortex line in a type II superconductor

C. Caroli, P. G. de Gennes, Julien Matricon · Physics Letters · 1964 · 1.3K citations

, , +8

Superconductivity in diamond

V. A. Sidorov, E. D. Bauer, N. N. Melnik et al. · Nature · 2004 · 1.1K citations · Full text

A Four Unit Cell Periodic Pattern of Quasi-Particle States Surrounding Vortex Cores in Bi <sub>2</sub> Sr <sub>2</sub> CaCu <sub>2</sub> O <sub>8+δ</sub>

Jennifer E. Hoffman, Eric Hudson, Kyle M. Lang et al. · Science · 2002 · 866 citations · Full text

, , +17

Scanning-Tunneling-Microscope Observation of the Abrikosov Flux Lattice and the Density of States near and inside a Fluxoid

Harald F. Hess, R. B. Robinson, R. C. Dynes et al. · Physical Review Letters · 1989 · 743 citations

, , +13

Superconductivity in Boron-Doped Diamond

Kwan-Woo Lee, Warren E. Pickett · Physical Review Letters · 2004 · 224 citations · Full text

, , +17