Evidence for a hard gap and Wigner lattice in heavily boron-doped synthetic diamond

Tomoko Sudou, Kazutoshi Ohashi, Toshimaro Sato, Eiji Ohta, Satoru Okayasu, Hiroyuki Sugai

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We have measured low frequency generation-recombination noise (g-r noise) spectra of a heavily boron-doped diamond crystal over the temperature range 20-300 K. The experimental results show that there are two peaks in the g-r noise spectrum at 120 K and 67 K, respectively. The 120 K peak corresponds to experimental evidence for existence of a hard gap having width of 10.4 meV. We interpret the 67 K peak as evidence for Wigner lattice formation whose gap width is 5.8 meV.

Original languageEnglish
Article number045211
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number4
DOIs
Publication statusPublished - 2005 Jan

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Synthetic diamonds
Diamond
Boron
Diamonds
boron
diamonds
noise spectra
Crystals
Temperature
low frequencies
crystals
temperature

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Evidence for a hard gap and Wigner lattice in heavily boron-doped synthetic diamond. / Sudou, Tomoko; Ohashi, Kazutoshi; Sato, Toshimaro; Ohta, Eiji; Okayasu, Satoru; Sugai, Hiroyuki.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 71, No. 4, 045211, 01.2005.

Research output: Contribution to journalArticle

Sudou, Tomoko ; Ohashi, Kazutoshi ; Sato, Toshimaro ; Ohta, Eiji ; Okayasu, Satoru ; Sugai, Hiroyuki. / Evidence for a hard gap and Wigner lattice in heavily boron-doped synthetic diamond. In: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Vol. 71, No. 4.
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