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Disorder effect on the density of states in Landau quantized graphene
Репозиторій DSpace/Manakin
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Disorder effect on the density of states in Landau quantized graphene
Тема:
Graphene and graphite multilayers
Інший ID:
PACS: 81.05.Uw;71.10.–w;73.43.Qt
Посилання:
Disorder effect on the density of states in Landau quantized graphene
/ Balázs Dóra // Физика низких температур. — 2008. — Т. 34, № 10. — С. 1020-1024. — Бібліогр.: 23 назв. — англ.
Підтримка:
We are grateful for useful discussions to K. Ziegler
and P. Thalmeier. This work was supported by the Hungarian
Scientific Research Fund under grant number
OTKA TS049881 and K 72613.
Дата:
2008
Переглядів:
821
Завантажень:
619
Анотація:
We have studied the effect of gaussian potential (on-site) and unidirectional bond disorder on the density
of states (DOS) of Landau quantized graphene. The broadening of the Landau levels weakly depends on energy
and the symmetry of the disorder except at the Dirac point. There, bond disorder enhances significantly
the peak in the DOS. For stronger disorder, Landau quantization becomes irrelevant, the discrete structures
from Landau levels disappear, and we recover the zero field DOS.
