Journal
PHYSICAL REVIEW LETTERS
Volume 128, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.128.057702
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Funding
- Graphene Flagship
- Swiss National Science Foundation via NCCR Quantum Science
- European Union [862660/QUANTUM E LEAPS]
- NCCR SPIN
- la Caixa Foundation [100010434, LCF/BQ/EU19/11710062]
- Elemental Strategy Initiative [JPMXP0112101001]
- JSPS KAKENHI [JP20H00354]
- CREST [JPMJCR15F3]
- JST
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In this study, magnetotransport oscillations caused by scattering between minivalleys in twisted double bilayer graphene are investigated. An electron-phonon mechanism and valley conserving scattering are found to be likely mechanisms.
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.
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