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ÌâÄ¿£ºA 3N rule for the electronic properties of doped graphene http://iopscience.iop.org/0957-4484/24/22/225705/ ¶Ôʯīϩ²»ÊǺÜÊìϤµÄ¿ÉÒÔ¿´¿´£¬ÀïÃæÓÐʯīϩÄÜ´øÕÛµþµÄÐÅÏ¢¡£×öʯīϩµÄ¶¼¿ÉÒÔ¿´¿´¡£ ÁíÍâ·¢ÏÖÁËÒ»¸öͦÓÐȤµÄ£¬Óë̼ÄÉÃ×¹ÜÓëʯīϩ´øÏàËÆµÄ3N¹æÂÉ¡£ abstract£º Doping a graphene sheet with different atoms is a promising method for tuning its electronic properties. We report a first-principle investigation on the electronic properties of N, B, S, Al, Si or P doped graphene. It is revealed that the doped graphene can show an interesting physical regularity, which can be described by a simple 3N rule: a doped graphene has a zero gap or a neglectable gap at the Dirac point when its primitive cell is 3N ¡Á 3N (N is an integer), otherwise there is a gap tunable by the dopant concentration. This unique 3N rule provides a useful guideline for the design of doped graphene for electronic applications. |
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- ¸½¼þ 2 : nano225705suppdata.pdf
2013-06-02 13:55:52, 1.63 M
2013-06-02 13:57:36, 2.47 M
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