SPATIAL VARIATION OF TUNNELING SPECTRA IN (111)-ORIENTED FILMS OF BORON-DOPED DIAMOND PROBED BY STM/STS

Author:

NISHIZAKI TERUKAZU1,SASAKI TAKAHIKO1,KOBAYASHI NORIO1,TAKANO YOSHIHIKO2,NAGAO MASANORI3,KAWARADA HIROSHI4

Affiliation:

1. Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan

2. National Institute for Materials Science, Sengen 1-2-1, Tsukuba 305-0047, Japan

3. Faculty of Engineering, University of Yamanashi, Yamanashi 400-8511, Japan

4. School of Science and Engineering, Waseda University, Tokyo 169-8555, Japan

Abstract

We report on scanning tunneling microscopy/spectroscopy (STM/STS) experiments on boron-doped diamond films. The tunneling conductance dI/dV spectra measured on the (111)-oriented surface show spatial variations which distribute irrespective of the surface morphology. The spatial variations are discussed in terms of characteristic features of the superconductivity under the condition of the considerable disorder by the boron doping.

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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