• 文献标题:   Scattering between Minivalleys in Twisted Double Bilayer Graphene
  • 文献类型:   Article
  • 作  者:   TOMIC P, RICKHAUS P, GARCIARUIZ A, ZHENG GL, PORTOLES E, FAL KO V, WATANABE K, TANIGUCHI T, ENSSLIN K, IHN T, DE VRIES FK
  • 作者关键词:  
  • 出版物名称:   PHYSICAL REVIEW LETTERS
  • ISSN:   0031-9007 EI 1079-7114
  • 通讯作者地址:  
  • 被引频次:   5
  • DOI:   10.1103/PhysRevLett.128.057702
  • 出版年:   2022

▎ 摘  要

A unique feature of the complex band structures of moire ' materials is the presence of minivalleys, their hybridization, and scattering between them. Here, we investigate magnetotransport oscillations caused by scattering between minivalleys-a phenomenon analogous to magnetointersubband oscillations-in a twisted double bilayer graphene sample with a twist angle of 1.94 degrees. We study and discuss the potential scattering mechanisms and find an electron-phonon mechanism and valley conserving scattering to be likely. Finally, we discuss the relevance of our findings for different materials and twist angles.