Type-II Dirac cones and electron-phonon interaction in monolayer biphenylene from first-principles calculations
文献类型：期刊论文
| 作者 | Liu, Peng-Fei1,2; Li, Jingyu3,4; Zhang, Chi5; Tu, Xin-Hai1,2; Zhang, Junrong1,2; Zhang, Ping6,7; Wang, Bao-Tian1,2,8; Singh, David J.9,10 |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2021-12-16 |
| 卷号 | 104 |
| ISSN号 | 2469-9950 |
| DOI | 10.1103/PhysRevB.104.235422 |
| 通讯作者 | Wang, Bao-Tian(wangbt@ihep.ac.cn) |
| 英文摘要 | We report a first-principles investigation of electronic structure, topological bands, and electron-phonon interactions in metallic biphenylene sheets. Biphenylene is a recently synthesized sp(2)-bonded carbon allotrope. We find coupling of electrons at the Fermi surface to very high frequency carbon-derived phonons, analogous to superconducting MgB2. This leads to low-temperature weak coupling superconductivity due to an unusual combination of exceptionally large logarithmically averaged phonon frequency omega(log)=1369 K and moderate electron-phonon coupling. The electronic structure shows a two-band Fermi surface dominated by C p(z) orbitals and a pair of type-II tilted Dirac cones along the P-Y line at the Brillouin zone boundary. Berry curvature and edge-state calculations show that monolayer biphenylene is a two-dimensional Z(2) topological material. Thus, monolayer biphenylene is predicted to be a topological superconductor based on C p orbitals and high-frequency phonons. |
| WOS关键词 | GRAPHENE ALLOTROPE ; SUPERCONDUCTIVITY ; PSEUDOPOTENTIALS ; PHAGRAPHENE ; PREDICTION ; NETWORK ; PHASE ; GAPS |
| 资助项目 | National Natural Science Foundation of China[12074381] ; National Natural Science Foundation of China[12005230] ; National Natural Science Foundation of China[12104458] ; National Natural Science Foundation of China[11805214] ; Foshan (Southern China) Institute for New Materials[2021AYF25021] ; Key Scientific and Technological Project of Henan Province[212102210577] ; Science Foundation of Henan University of Technology[31401129] ; U.S. Department of Energy[DE-SC0019114] |
| WOS研究方向 | Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | AMER PHYSICAL SOC |
| WOS记录号 | WOS:000753729500003 |
| 资助机构 | National Natural Science Foundation of China ; Foshan (Southern China) Institute for New Materials ; Key Scientific and Technological Project of Henan Province ; Science Foundation of Henan University of Technology ; U.S. Department of Energy |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/127524]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Wang, Bao-Tian |
| 作者单位 | 1.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China 2.Spallat Neutron Source Sci Ctr, Dongguan 523803, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Mat Phys, HFIPS, Hefei 230031, Peoples R China 4.Foshan Southern China Inst New Mat, Foshan 528200, Guangdong, Peoples R China 5.Henan Univ Technol, Coll Elect Engn, Zhengzhou 450001, Peoples R China 6.Qufu Normal Univ, Sch Phys & Phys Engn, Qufu 273165, Shandong, Peoples R China 7.Inst Appl Phys & Computat Math, LCP, Beijing 100088, Peoples R China 8.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Shanxi, Peoples R China 9.Univ Missouri, Dept Phys & Astron, Columbia, MO 65211 USA 10.Univ Missouri, Dept Chem, Columbia, MO 65211 USA |
| 推荐引用方式 GB/T 7714 | Liu, Peng-Fei,Li, Jingyu,Zhang, Chi,et al. Type-II Dirac cones and electron-phonon interaction in monolayer biphenylene from first-principles calculations[J]. PHYSICAL REVIEW B,2021,104. |
| APA | Liu, Peng-Fei.,Li, Jingyu.,Zhang, Chi.,Tu, Xin-Hai.,Zhang, Junrong.,...&Singh, David J..(2021).Type-II Dirac cones and electron-phonon interaction in monolayer biphenylene from first-principles calculations.PHYSICAL REVIEW B,104. |
| MLA | Liu, Peng-Fei,et al."Type-II Dirac cones and electron-phonon interaction in monolayer biphenylene from first-principles calculations".PHYSICAL REVIEW B 104(2021). |
入库方式： OAI收割
来源：合肥物质科学研究院
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