Engineering exotic states in graphene heterostructures
Mardi 4 juin 2019 14:00
- Duree : 1 heure
Lieu : Salle « Remy Lemaire » (K223) de l’Institut Néel – au n°25 de la rue des martyrs, Grenoble.
Orateur : Peter MAKK (University of Basel & Budapest University of Technology and Economics,)
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Resumé / Abstract :
Graphene is an ideal platform to realize novel, topological states of matter by combining it with other 2D materials using van der Waals stacking. These states include the topological insulator state, the valley Hall state and the appearance Majorana excitations have also been predicted by combining special quantum Hall states with superconducting correlations. Here we show our work towards this direction.
First I will show supercurrent measurements in graphene/hBN heterostructures with a Moiré superlattice formed by alinging graphene lattice to the hBN lattice. Using the supercurrent measurement we extract the DOS of the superlattice and investigate the appearance of edge states using interferometry measurements. We also show tunneling spectroscopy measurements in graphene, where we extract the non-equilibrium distribution function and investigate the electron cooling mechanisms in graphene. Finally we comment on the appearance of SOI from TMDC substrates.
D. Indolese, et al., Phys. Rev. Lett., 121, 137701 (2018)
S. Zihlmann, et al. Phys. Rev. B. 7, 075419 (2019)
L. Wang, et al. Nano Lett., 19, 2371 (2019)
S. Zihlmann, et al. Phys. Rev. B., 7, 075434 (2019)
Contact : equipe-seminaires-nano@fondation-nanosciences.fr
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