10.1021/acs.nanolett.6b01041.s001
Younes Henni
Younes
Henni
Hector
Pablo Ojeda Collado
Hector
Pablo
Ojeda Collado
Karol Nogajewski
Karol
Nogajewski
Maciej R. Molas
Maciej R.
Molas
Gonzalo Usaj
Gonzalo
Usaj
Carlos A. Balseiro
Carlos A.
Balseiro
Milan Orlita
Milan
Orlita
Marek Potemski
Marek
Potemski
Clement Faugeras
Clement
Faugeras
Rhombohedral Multilayer Graphene: A Magneto-Raman
Scattering Study
American Chemical Society
2016
room temperatures
probe ABC
field evolution
Fermi level
ABA
17 graphene sheets
Rhombohedral Multilayer Graphene
Landau level excitations
ABC domain
ABC sequences
ABC graphene multilayers
2016-05-10 00:00:00
Journal contribution
https://acs.figshare.com/articles/journal_contribution/Rhombohedral_Multilayer_Graphene_A_Magneto-Raman_Scattering_Study/3384580
Graphene
layers are known to stack in two stable configurations, namely, ABA
or ABC stacking, with drastically distinct electronic properties.
Unlike the ABA stacking, little has been done to experimentally investigate
the electronic properties of ABC graphene multilayers. Here, we report
on the first magneto optical study of a large ABC domain in a graphene
multilayer flake, with ABC sequences exceeding 17 graphene sheets.
ABC-stacked multilayers can be fingerprinted with a characteristic
electronic Raman scattering response, which persists even at room
temperatures. Tracing the magnetic field evolution of the inter Landau
level excitations from this domain gives strong evidence for the existence
of a dispersionless electronic band near the Fermi level, characteristic
of such stacking. Our findings present a simple yet powerful approach
to probe ABC stacking in graphene multilayer flakes, where this highly
degenerated band appears as an appealing candidate to host strongly
correlated states.