Pseudospin magnetism in graphene
By H. Min, G. Borghi, M. Polini, A. H. MacDonald. 2007
160 citations recorded by the source corpus.
We predict that neutral graphene bilayers are pseudospin magnets in which the charge density contribution from each valley and spin spontaneously shifts to one of the two layers. The band structure of this system is characterized by a momentum-space vortex, which is responsible for unusual competition between band and kinetic energies, leading to symmetry breaking in the vortex core. We discuss the possibility of realizing a pseudospin version of ferromagnetic metal spintronics in graphene bilayers based on hysteresis associated with this broken symmetry.
Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry
View Paper: https://www.semanticscholar.org/paper/ad08cad41fb9c5daf8dfb7dabbcda2d2f5c97fb7
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In Atomic and Molecular Physics, and Optics
In Materials Chemistry
Citations in the corpus
- Electronic properties of graphene-based bilayer systems (2015, background): “[295] that the long-range Coulomb interaction establishes a gapped broken symmetry state, which they called a “pseudospin magnet”.”
- Electronic transport in two-dimensional graphene (2010, background): “For both bilayer graphene (Min et al., 2008b) and for double layer graphene (Min et al., 2008a) an instability towards an exitonic condensate has been proposed.”
- Colloquium: Graphene spectroscopy (2014, background): “Unfortunately, space limitations and the open debate on the nature of these low-energy states (Barlas et al., 2010; Min et al., 2008; Nandkishore and Levitov, 2010a,b, 2011; Nilsson et al., 2006; Vafek and Yang, 2010) do not permit us to describe them in any detail.”