English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT

Released

Journal Article

Widely Tunable Quantum Phase Transition from Moore-Read to Composite Fermi Liquid in Bilayer Graphene

MPS-Authors
/persons/resource/persons217476

Sodemann,  Inti
Max Planck Institute for the Physics of Complex Systems, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)

1909.05883.pdf
(Preprint), 8MB

Supplementary Material (public)
There is no public supplementary material available
Citation

Zhu, Z., Sheng, D. N., & Sodemann, I. (2020). Widely Tunable Quantum Phase Transition from Moore-Read to Composite Fermi Liquid in Bilayer Graphene. Physical Review Letters, 124(9): 097604. doi:10.1103/PhysRevLett.124.097604.


Cite as: http://hdl.handle.net/21.11116/0000-0008-B09D-0
Abstract
We develop a proposal to realize a widely tunable and clean quantum phase transition in bilayer graphene between two paradigmatic fractionalized phases of matter: theMoore-Read fractional quantum Hall state and the composite Fermi liquid metal. This transition can be realized at total fillings. nu = +/- 3 + 1/2 and the critical point can be controllably accessed by tuning either the interlayer electric bias or the perpendicular magnetic field values over a wide range of parameters. We study the transition numerically within a model that contains all leading single particle corrections to the band structure of bilayer graphene and includes the fluctuations between the n = 0 and n = 1 cyclotron orbitals of its zeroth Landau level to delineate the most favorable region of parameters to experimentally access this unconventional critical point. We also find evidence for a new anisotropic gapless phase stabilized near the level crossing of n = 0/1 orbits.