A simple rule for finding Dirac cones in bilayered perovskites
文献类型：期刊论文
| 作者 | X.J.Chen; L.Liu; D.Z.Shen |
| 刊名 | Chinese Physics B
 |
| 出版日期 | 2019 |
| 卷号 | 28期号:7页码:4 |
| 关键词 | Dirac cone,perovskites,graphene,density functional theory,total-energy calculations,graphene,insulator |
| ISSN号 | 1674-1056 |
| DOI | 10.1088/1674-1056/28/7/077106 |
| 英文摘要 | A simple rule for finding Dirac cone electronic states in solids is proposed, which is neglecting those lattice atoms inert to particular electronic bands, and pursuing the two-dimensional (2D) graphene-like quasi-atom lattices with s-and pbindings by considering the equivalent atom groups in the unit cell as quasi-atoms. Taking CsPbBr3 and Cs3Bi2Br9 bilayers as examples, we prove the effectiveness and generality of this rule with the density functional theory (DFT) calculations. We demonstrate that both bilayers have Dirac cones around the Fermi level and reveal that their corresponding Fermi velocities can reach as high as similar to 0.2 x 10(6) m/s. This makes these new 2D layered materials very promising in making new ultra-fast ionic electronic devices. |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| 源URL | [http://ir.ciomp.ac.cn/handle/181722/63448]  |
| 专题 | 中国科学院长春光学精密机械与物理研究所 |
| 推荐引用方式 GB/T 7714 | X.J.Chen,L.Liu,D.Z.Shen. A simple rule for finding Dirac cones in bilayered perovskites[J]. Chinese Physics B,2019,28(7):4. |
| APA | X.J.Chen,L.Liu,&D.Z.Shen.(2019).A simple rule for finding Dirac cones in bilayered perovskites.Chinese Physics B,28(7),4. |
| MLA | X.J.Chen,et al."A simple rule for finding Dirac cones in bilayered perovskites".Chinese Physics B 28.7(2019):4. |
入库方式： OAI收割
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。