Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-08-05
Phys. Rev. B 84, 241306(R) (2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 3 figures; supersedes earlier version
Scientific paper
10.1103/PhysRevB.84.241306
A partially filled Landau level (LL) hosts a variety of correlated states of matter with unique properties. The ability to control these phases requires tuning the effective electron interactions within a LL, which has been difficult to achieve in GaAs-based structures. Here we consider a class of Dirac materials in which the chiral band structure, along with the mass term, gives rise to a wide tunability of the effective interactions by the magnetic field. This tunability is such that different phases can occur in a single LL, and phase transitions between them can be driven in situ. The incompressible, Abelian and non-Abelian, liquids are stabilized in interaction regimes different from GaAs. Our study points to a realistic method of controlling the correlated phases and studying the phase transitions between them in materials such as graphene, bilayer graphene, and topological insulators.
Abanin Dmitri A.
Barlas Yafis
Bhatt R. N.
Papić Zlatko
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