Tunneling Spectroscopy and Vortex Imaging in Boron-Doped Diamond

B. Sacepe; C. Chapelier; C. Marcenat; J. Kacmarcik; T. Klein; M. Bernard; E. Bustarret

doi:10.1103/PhysRevLett.96.097006

Tunneling Spectroscopy and Vortex Imaging in Boron-Doped Diamond

Superconductivity 2009-11-11 v2

Authors: B. Sacepe , C. Chapelier , C. Marcenat , J. Kacmarcik , T. Klein , M. Bernard , E. Bustarret

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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 $\Delta(0)/k_B T_c \simeq 1.74$ . Vortex imaging at low magnetic field also reveals localized states inside the vortex core that are unexpected for such a dirty superconductor.

Keywords

scanning tunneling spectroscopy boron-doped diamond superconducting gap BCS theory vortex imaging localized states

Cite

@article{arxiv.cond-mat/0510541,
  title  = {Tunneling Spectroscopy and Vortex Imaging in Boron-Doped Diamond},
  author = {B. Sacepe and C. Chapelier and C. Marcenat and J. Kacmarcik and T. Klein and M. Bernard and E. Bustarret},
  journal= {arXiv preprint arXiv:cond-mat/0510541},
  year   = {2009}
}

Comments

4 pages, 4 figures, replaced with revised version

Tunneling Spectroscopy and Vortex Imaging in Boron-Doped Diamond

Abstract

Keywords

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