Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session S51: Graphene: Electron interactions
11:15 AM–2:03 PM,
Thursday, March 5, 2020
Room: Mile High Ballroom 1D
Sponsoring
Unit:
DCMP
Chair: George Kioseoglou, Univ of Crete
Abstract: S51.00003 : The equilibration dynamics of spin-polarized quantum Hall edges at graphene p-n junction
View Presentation
Abstract
Presenter:
Arup Kumar Paul
(Indian Institute of Science - Dept of Physics)
Authors:
Arup Kumar Paul
(Indian Institute of Science - Dept of Physics)
MANAS SAHU
(Indian Institute of Science - Dept of Physics)
Chandan Kumar
(Indian Institute of Science - Dept of Physics)
Kenji Watanabe
(National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.)
Takashi Taniguchi
(National Institute for Materials Science, Namiki 1-1, Ibaraki 305-0044, Japan.)
Anindya Das
(Indian Institute of Science - Dept of Physics)
graphite gated hexagonal boron nitride (hBN) encapsulated graphene device. Earlier studies with unpolarized QH edges showed incoherent processes as the dominant scattering mechanism for mode mixing. However, Our results reveal that the mode mixing dynamics of the polarized QH edges are much more intricate depending on the spin sequence of QH edges. A complete crossover from incoherent to fully coherent scattering regime was observed by tuning the number of participating polarized QH edges at the pn junction, which will pave the way to design the electron quantum optics experiments based on polarized QH edges of graphene.
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