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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - 2005 Jan|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics