Thue-Morse序列非周期石墨烯超晶格中的电子带隙和输运
Electronic band gaps and transport in aperiodic graphene superlattices of Thue-Morse sequence
摘要：
研究了Thue-Morse序列非周期石墨烯超晶格的电子性质。虽然该结构是非周期性的，但确实存在一个不寻常的狄拉克点（DP），其位置正好在零平均波数（零- $\bar{k})$）的位置。此外，与DP相关联的零$\bar{k}$带隙对晶格常数和入射角是稳健的，并且在适当的条件下可以出现多DP。预测了Thue-Morse序列中电子输运的可控性，这可能有助于许多石墨烯基电子学的发展。
英文摘要：
We have studied the electronic properties in aperiodic graphene superlattices of Thue-Morse sequence. Although the structure is aperiodic, an unusual Dirac point (DP) does exist and its location is exactly at the position of the zero-averaged wave number (zero-$\bar{k})$. Furthermore, the zero-$\bar{k}$ gap associated with the DP is robust against the lattice constants and the incident angles, and multi-DPs can appear under the suitable conditions. A resultant controllability of electron transport in Thue-Morse sequence is predicted, which may facilitate the development of many graphene-based electronics.
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