科研之友
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摘要
This research studies the possibility of the existence of the neutral triplet collective mode in undoped graphene and graphite. This work tries to study this collective mode from different points of view. It also studies the effects of the on-site Hubbard interaction on the neutral collective mode in a honeycomb lattice via two representations (sub-lattice and eigenvector). The effective long rang interaction in the honeycomb lattice has been introduced for studying the spin collective mode. This work shows that short and effective long range interactions are not responsible for the formation of the neutral triplet collective mode in graphene without the one-cone approximation.
- 出版日期2014-10
