The Origin of Raman D Band: Bonding and Antibonding Orbitals in Graphene

Crystals

Ken-ichi Sasaki¹  Yasuhiro Tokura¹ 

[1] NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation, 3-1 Morinosato Wakamiya, Atsugi, Kanagawa 243-0198, Japan; E-Mails:

关键词: graphene;    edge;    Raman D band;    molecular orbitals;   

DOI  :  10.3390/cryst3010120

来源: mdpi

【 摘 要 】

In Raman spectroscopy of graphite and graphene, the D band at ~ 1355 cm⁻¹ is used as the indication of the dirtiness of a sample. However, our analysis suggests that the physics behind the D band is closely related to a very clear idea for describing a molecule, namely bonding and antibonding orbitals in graphene. In this paper, we review our recent work on the mechanism for activating the D band at a graphene edge.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland