Superhyperfine Interactions of the Nitrogen Donors in 4H SiC Studied by Pulsed ENDOR and TRIPLE ENDOR Spectroscopy

Dariya V. Savchenko; Ekaterina N. Kalabukhova; Evgeniy Mokhov; Andreas Pöppl

doi:10.4028/www.scientific.net/MSF.740-742.439

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HomeMaterials Science ForumMaterials Science Forum Vols. 740-742Superhyperfine Interactions of the Nitrogen Donors...

Superhyperfine Interactions of the Nitrogen Donors in 4H SiC Studied by Pulsed ENDOR and TRIPLE ENDOR Spectroscopy

Abstract:

The nitrogen donors residing at quasi-cubic lattice site (N_k) in 4H SiC were investigated by field sweep electron spin echo (FS ESE), pulsed electron nuclear double resonance (ENDOR) and pulsed General TRIPLE ENDOR spectroscopy. The ²⁹Si and ¹³C superhyperfine lines observed in the FS ESE and ENDOR spectra of N_k in n-type 6H SiC were assigned by pulsed General TRIPLE resonance spectroscopy to the specific carbon (C) and silicon (Si) atoms located in the nearest environment of N_k in 4H SiC. The superhyperfine interaction constants and their relative signs for Nk with ²⁹Si and ¹³C nuclei located in the nearest-neighbor shells are found from the General TRIPLE ENDOR spectra to be positive for C atoms and negative for Si atoms.

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Materials Science Forum (Volumes 740-742)

Pages:

439-442

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.740-742.439

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Online since:

January 2013

Authors:

Dariya V. Savchenko, Ekaterina N. Kalabukhova, Evgeniy Mokhov, Andreas Pöppl

Keywords:

4H-SiC, ENDOR, Nitrogen Donors

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