Bulletin of the American Physical Society
APS March Meeting 2018
Volume 63, Number 1
Monday–Friday, March 5–9, 2018; Los Angeles, California
Session P45: Quantum Hall Physics
2:30 PM–5:18 PM,
Wednesday, March 7, 2018
LACC
Room: 505
Sponsoring
Unit:
DCMP
Chair: David Parker, Oak Ridge National Laboratory
Abstract ID: BAPS.2018.MAR.P45.14
Abstract: P45.00014 : Edge Reconstruction in Monolayer Graphene at and near ν=0*
5:06 PM–5:18 PM
Presenter:
Amartya Saha
(Department of Physics and Astronomy, Univ of Kentucky)
Authors:
Amartya Saha
(Department of Physics and Astronomy, Univ of Kentucky)
Ganpathy Murthy
(Department of Physics and Astronomy, Univ of Kentucky)
such as the canted antiferromagnet, the fully polarized, the charge density wave, and Kekule
distorted, depending on the external and internal couplings[1]. In this problem we focus on the
edge of a graphene sheet when the confining potential is made smoother. An analysis at
ν=3 in GaAs quantum Hall systems shows a novel spin-mode- switching, where the
spatial order of the spin modes switches to make like-spin edges lie close to each other[2].
We will study the similarities and differences between the Dirac-like quantum Hall system of
monolayer graphene and standard GaAs systems and show that pseudospin-mode- switching
occurs in graphene edges near ν=0.
[1] Maxim Kharitonov, Phys. Rev. B 85, 155439
[2] Udit Khanna, Ganpathy Murthy, Sumathi Rao, and Yuval Gefen, Phys. Rev. Lett. 119, 186804
*NSF-DMR-1306897
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.MAR.P45.14
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