Research paperTheoreticalComputed Band StructureExceptional magic angles in non-Hermitian twisted bilayer grapheneJuan Pablo Esparza, Vladimir Juričić2025·10.1103/dl59-vl7v·arXiv:2408.08804AbstractTwisted bilayer graphene features flat bands near the magic angle. This work develops a non-Hermitian version of twisted bilayer graphene by introducing non-reciprocal nearest-neighbor hopping in graphene monolayers and extending the Bistritzer-MacDonald continuum approach. The authors show that non-Hermiticity produces exceptional magic angles where the spectrum changes from purely real to purely imaginary, yielding flattened bands with infinite lifetime, with a Hermitian magic angle occurring between them. They derive the effective continuum Hamiltonian, analyze symmetry protection, and propose an optical-lattice realization with gain and loss.Read more
Non-Hermitian twisted bilayer graphene modeled within a continuum Bistritzer-MacDonald-type framework.1 characterization3 properties1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed Band StructureExceptional magic angles in non-Hermitian twisted bilayer grapheneJuan Pablo Esparza, Vladimir Juričić2025·10.1103/dl59-vl7v·arXiv:2408.08804AbstractTwisted bilayer graphene features flat bands near the magic angle. This work develops a non-Hermitian version of twisted bilayer graphene by introducing non-reciprocal nearest-neighbor hopping in graphene monolayers and extending the Bistritzer-MacDonald continuum approach. The authors show that non-Hermiticity produces exceptional magic angles where the spectrum changes from purely real to purely imaginary, yielding flattened bands with infinite lifetime, with a Hermitian magic angle occurring between them. They derive the effective continuum Hamiltonian, analyze symmetry protection, and propose an optical-lattice realization with gain and loss.Read more
Non-Hermitian twisted bilayer graphene modeled within a continuum Bistritzer-MacDonald-type framework.1 characterization3 properties1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed Band StructureExceptional magic angles in non-Hermitian twisted bilayer grapheneJuan Pablo Esparza, Vladimir Juričić2025·10.1103/dl59-vl7v·arXiv:2408.08804AbstractTwisted bilayer graphene features flat bands near the magic angle. This work develops a non-Hermitian version of twisted bilayer graphene by introducing non-reciprocal nearest-neighbor hopping in graphene monolayers and extending the Bistritzer-MacDonald continuum approach. The authors show that non-Hermiticity produces exceptional magic angles where the spectrum changes from purely real to purely imaginary, yielding flattened bands with infinite lifetime, with a Hermitian magic angle occurring between them. They derive the effective continuum Hamiltonian, analyze symmetry protection, and propose an optical-lattice realization with gain and loss.Read more
Non-Hermitian twisted bilayer graphene modeled within a continuum Bistritzer-MacDonald-type framework.1 characterization3 properties1 figureSimulatedCStudied MaterialExpand
Research paperTheoreticalComputed Band StructureExceptional magic angles in non-Hermitian twisted bilayer grapheneJuan Pablo Esparza, Vladimir Juričić2025·10.1103/dl59-vl7v·arXiv:2408.08804AbstractTwisted bilayer graphene features flat bands near the magic angle. This work develops a non-Hermitian version of twisted bilayer graphene by introducing non-reciprocal nearest-neighbor hopping in graphene monolayers and extending the Bistritzer-MacDonald continuum approach. The authors show that non-Hermiticity produces exceptional magic angles where the spectrum changes from purely real to purely imaginary, yielding flattened bands with infinite lifetime, with a Hermitian magic angle occurring between them. They derive the effective continuum Hamiltonian, analyze symmetry protection, and propose an optical-lattice realization with gain and loss.Read more
Non-Hermitian twisted bilayer graphene modeled within a continuum Bistritzer-MacDonald-type framework.1 characterization3 properties1 figureSimulatedCStudied MaterialExpand
