Electronic Structures of Carbon-Based Kagomé Lattices

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2014,（2）
• 页码范围: 134-136
• 页数: 3页
• 语种: 英文
• DOI: 10.1088/0256-307X/31/2/028102

摘要

A structurally stable two-dimensional carbon allotrope of graphene is studied theoretically based on the firstprinciples calculations.This allotrope can be formed by inserting acetylene and diacetylene fragments into β-graphyne.The calculations on structure and electronic energy spectra show that the carbon Kagomé lattice is a structurally stable semimetal with the Dirac cones below the Fermi surface,in contrast to the Dirac points at the Fermi surface in intrinsic graphene.