Broken translational symmetry in an emergent paramagnetic phase of graphene
Name
Chern-2012-Broken translational symmetry in an emergent paramagnetic phase of graphene.pdf
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328.75 KB
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Author(s)
Chern, Gia-Wei
Fernandes, Rafael M.
Nandkishore, Rahul Mahajan
Chubukov, Andrey V.
Date Issued
September 2012
Journal
Physical Review B
Publisher
American Physical Society
Citation
Chern, Gia-Wei et al. “Broken Translational Symmetry in an Emergent Paramagnetic Phase of Graphene.” Physical Review B 86.11 (2012). ©2012 American Physical Society
Version
Final published version
Abstract
We show that the spin-density wave state on the partially filled honeycomb and triangular lattices is preempted by a paramagnetic phase that breaks an emergent Z[subscript 4] symmetry of the system associated with the four inequivalent arrangements of spins in the quadrupled unit cell. Unlike other emergent paramagnetic phases in itinerant and localized-spin systems, this state preserves the C[subscript 6] rotational symmetry of the lattice, but breaks its translational symmetry, giving rise to a superlattice structure that can be detected by scanning tunneling microscopy. This emergent phase also has distinctive signatures in the magnetic spectrum that can be probed experimentally.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.86.115443
