Download file (10.3MB)
Download as zip (9.83MB)

コレクション

引用

説明:

Bernal-stacked tetralayer graphene (4LG) exhibits intriguing low-energy properties, featuring two massive subbands and showcasing diverse features of topologically dis- tinct, anisotropic Fermi surfaces, including Lifshitz transitions and trigonal warping. Here, we study the influence of the band structure on electron dynamics within 4LG us- ing transverse magnetic focusing. Our analysis reveals two distinct focusing peaks cor- responding to the two subbands. Furthermore, we uncover a pronounced dependence of the focusing spectra on crystal orientations, indicative of an anisotropic Fermi surface. Utilizing the semiclassical model, we attribute this orientation-dependent behavior to the trigonal warping of the band structure. This phenomenon leads to variations in electron trajectories based on crystal orientation. Our findings not only enhance our understanding of the dynamics of electrons in 4LG, but also offer a promising method for probing anisotropic Fermi surfaces in other materials.

権利情報:

• Creative Commons BY-NC-ND Attribution-NonCommercial-NoDerivs 4.0 International
  

キーワード: Bernal-stacked tetralayer graphene, electron dynamics, transverse magnetic focusing

刊行年月日: 2024-05-29

出版者: American Chemical Society (ACS)

掲載誌:

• Nano Letters (ISSN: 15306984) vol. 24 issue. 21 p. 6330-6336

研究助成金:

• Thailand Toray Science Foundation
• Ministry of Education, Culture, Sports, Science and Technology
• National Research Council of Thailand
• Japan Society for the Promotion of Science 20H00354
• Japan Society for the Promotion of Science 23H02052
• Chulalongkorn University N42A650266
• National Science, Research and Innovation Fund Thailand B05F640152

原稿種別: 出版者版 (Version of record)

MDR DOI:

公開URL: https://doi.org/10.1021/acs.nanolett.4c01133

関連資料:

その他の識別子:

連絡先:

更新時刻: 2025-02-14 16:30:57 +0900

MDRでの公開時刻: 2025-02-14 16:30:57 +0900