Theory of competing charge density wave, Kekulé, and antiferromagnetically ordered fractional quantum Hall states in graphene aligned with boron nitride

SS Hegde, IS Villadiego - Physical Review B, 2022 - APS
We investigate spin-and valley-symmetry-broken fractional quantum Hall phases within a
formalism that naturally extends the paradigm of quantum Hall ferromagnetism from integer …

Skyrmion zoo in graphene at charge neutrality in a strong magnetic field

J Atteia, Y Lian, MO Goerbig - Physical Review B, 2021 - APS
As a consequence of the approximate spin-valley symmetry in graphene, the ground state of
electrons in graphene at charge neutrality is a particular SU (4) quantum Hall ferromagnet to …

Excitonic nature of magnons in a quantum Hall ferromagnet

A Assouline, M Jo, P Brasseur, K Watanabe… - Nature Physics, 2021 - nature.com
Magnons enable the transfer of a magnetic moment or spin over macroscopic distances. In
quantum Hall ferromagnets, it has been predicted that spin and charge are entangled …

[HTML][HTML] A perpendicular graphene/ferromagnet electrode for spintronics

H Naganuma, V Zatko, M Galbiati, F Godel… - Applied Physics …, 2020 - pubs.aip.org
We report on the large-scale integration of graphene layers over a FePd perpendicular
magnetic anisotropy (PMA) platform, targeting further downscaling of spin circuits. An L1 0 …

Imaging field-tuned quantum Hall broken-symmetry orders and the quantum Hall conducting channel in a charge-neutral graphene/WSe2 heterostructure

Q Zheng, MH Zhang, YN Ren, RH Zhang… - Science China Physics …, 2023 - Springer
The zeroth Landau level (0LL) in graphene has emerged as a flat band platform in which
distinct many-body phases can be explored with unprecedented control by simply tuning the …

Topological electrostatics

B Douçot, R Moessner… - Journal of Physics …, 2022 - iopscience.iop.org
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Topological quantum control: Edge currents via Floquet depinning of skyrmions in the graphene quantum Hall antiferromagnet

D Iyer, MS Foster - Physical Review B, 2020 - APS
We propose a defect-to-edge topological quantum quench protocol that can efficiently inject
electric charge from defect-core states into a chiral edge current of an induced Chern …

[PDF][PDF] Generalizing from SU (2) to SU (4) QHFM

JK Ding - Imagine, 2023 - stanford.edu
Assume that we are working with a 2D free electron gas (FEG) which experiences an out of
plane, static, spatially uniform magnetic field. We allow the electrons to have internal …

[BOOK][B] Hartree-Fock Studies of Quantum Hall States in Graphene

BR Feshami - 2020 - search.proquest.com
Recent experiments involving tilted graphene samples in the quantum Hall regime have
shown strong evidence of a continuous phase transition in the ν= 0 bulk state. The origins of …