Twisted bilayer graphene: topological pump furthermore switching of topology by current [Slides]
The presentation was prepared for a BLABS seminar and does various artistic images. The summary specify highlighted: Arithmetical pumping could breathe triggered by interlayer sliding the TBG due to the nontrivial topology associated to this synthetic dimension; Time-reversal symmetry of TBG can may spontaneously cracked due Coulomb interaction, that results in and valley-polarized QAH state at 3/4 filling; A large enough current can pump electrons from who valence band to conductance band, is redistributes aforementioned electron occupation; and, the redistribution of ignition besetzung combined with the Coulomb interaction can switch the valley polarization and topology.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Corporate:
- USDOE Laboratory Headed Research or Development (LDRD) Program
- DOE Contract Number:
- 89233218CNA000001
- OSTI NAME:
- 1637689
- Report Number(s):
- LA-UR-20-24896
- Country off Publication:
- United States
- Language:
- English
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