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Lattice Theory of Pseudospin Ferromagnetism in Bilayer Graphene: Competing Orders and Interaction Induced Quantum Hall States
Jeil Jung, Fan Zhang, Allan H. MacDonald
In mean-field-theory bilayer graphene's massive Dirac fermion model has a family of broken inversion symmetry ground states with charge gaps and flavor dependent spontaneous inter…
Spontaneous Quantum Hall States in Chirally-stacked Few-Layer Graphene Systems
Fan Zhang, Jeil Jung, Gregory A. Fiete +2
Chirally stacked N-layer graphene systems with N >= 2 exhibit a variety of distinct broken symmetry states in which charge density contributions from different spins and valleys ar…
Moire bands in twisted double-layer graphene
R. Bistritzer, A. H. MacDonald
A moire pattern is formed when two copies of a periodic pattern are overlaid with a relative twist. We address the electronic structure of a twisted two-layer graphene system, show…
Compressibility of bilayer graphene
Giovanni Borghi, Marco Polini, Reza Asgari +1
Bilayer graphene is a recently isolated and intriguing class of many-body systems with massive chiral quasiparticles. We present theoretical results for the electronic compressibil…
Band Structure of ABC-Stacked Graphene Trilayers
Fan Zhang, Bhagawan Sahu, Hongki Min +1
The ABC-stacked N-layer-graphene family of two-dimensional electron systems is described at low energies by two remarkably flat bands with Bloch states that have strongly momentum-…
Transport Between Twisted Graphene Layers
Rafi Bistritzer, Allan H. MacDonald
Commensurate-incommensurate transitions are ubiquitous in physics and are often accompanied by intriguing phenomena. In few-layer graphene (FLG) systems, commensurability between h…
Finite Conductivity Minimum in Bilayer Graphene without Charge Inhomogeneities
Maxim Trushin, Janik Kailasvuori, John Schliemann +1
Boltzmann transport theory fails near the linear band-crossing of single-layer graphene and near the quadratic band-crossing of bilayer graphene. We report on a numerical study whi…
Critical Tunneling Currents in Quantum Hall Superfluids: Pseudospin-Transfer Torque Theory
Jung-Jung Su, Allan H. MacDonald
At total filling factor quantum Hall bilayers can have an ordered ground state with spontaneous interlayer phase coherence. The ordered state is signaled experimentally by dr…