Low-temperature STM/STS studies on boron-doped (1 1 1) diamond films

Terukazu Nishizaki*, Yoshihiko Takano, Masanori Nagao, Tomohiro Takenouchi, Hiroshi Kawarada, Norio Kobayashi

*この研究の対応する著者

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We have performed scanning tunneling microscopy/spectroscopy (STM/STS) experiments on (1 1 1)-oriented epitaxial films of heavily boron-doped diamond (Tc∼5.4 K). We present that tunneling conductance spectra show temperature-dependent spatial variations. In the low-temperature region (T=0.47 K), the tunneling spectra do not show strong spatial dependence and a superconducting energy gap is observed independent of the surface morphology. In the high-temperature region (T=4.2 K), on the other hand, the tunneling conductance spectra show significant spatial dependence, indicating the inhomogeneous distribution of the superconducting property due to the distribution of boron atoms.

本文言語English
ページ(範囲)3027-3030
ページ数4
ジャーナルJournal of Physics and Chemistry of Solids
69
12
DOI
出版ステータスPublished - 2008 12

ASJC Scopus subject areas

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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