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

doi:10.1103/PhysRevB.71.045211

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 journal › Article › peer-review

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 language	English
Article number	045211
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	71
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.71.045211
Publication status	Published - 2005 Jan
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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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.",

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AU - Sudou, Tomoko

AU - Ohashi, Kazutoshi

AU - Sato, Toshimaro

AU - Ohta, Eiji

AU - Okayasu, Satoru

AU - Sugai, Hiroyuki

PY - 2005/1

Y1 - 2005/1

N2 - 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.

AB - 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.

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

Abstract

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