تقرير
Atomic-scale characterization of nitrogen-doped graphite: Effects of dopant nitrogen on the local electronic structure of the surrounding carbon atoms
| العنوان: | Atomic-scale characterization of nitrogen-doped graphite: Effects of dopant nitrogen on the local electronic structure of the surrounding carbon atoms |
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| المؤلفون: | Kondo, Takahiro, Casolo, Simone, Suzuki, Tetsuya, Shikano, Taishi, Sakurai, Masataka, Harada, Yoshihisa, Saito, Makoto, Oshima, Masaharu, Trioni, Mario Italo, Tantardini, Gian Franco, Nakamura, Junji |
| المصدر: | Phys. Rev. B 86, 035436 (2012) |
| سنة النشر: | 2012 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | We report the local atomic and electronic structure of a nitrogen-doped graphite surface by scanning tunnelling microscopy, scanning tunnelling spectroscopy, X-ray photoelectron spectroscopy, and first-principles calculations. The nitrogen-doped graphite was prepared by nitrogen ion bombardment followed by thermal annealing. Two types of nitrogen species were identified at the atomic level: pyridinic-N (N bonded to two C nearest neighbours) and graphitic-N (N bonded to three C nearest neighbours). Distinct electronic states of localized {\pi} states were found to appear in the occupied and unoccupied regions near the Fermi level at the carbon atoms around pyridinic-N and graphitic-N species, respectively. The origin of these states is discussed based on the experimental results and theoretical simulations. Comment: 6 Pages, with larger figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevB.86.035436 |
| URL الوصول: | http://arxiv.org/abs/1206.6593 |
| رقم الأكسشن: | edsarx.1206.6593 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevB.86.035436 |
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