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70 papers
Quantum Plasmons in Double Layer Systems
Luis Brey, H. A. Fertig
Plasmons are fundamental excitations of metals which can be described in terms of electron dynamics, or in terms of the electromagnetic fields associated with them. In this work we…
Plasmonic Transverse Dipole Moment in Chiral Fermion Nanowires
Jinlyu Cao, Herb Fertig, Luis Brey
Plasmons are elementary quantum excitations of conducting materials with Fermi surfaces. In two dimensions they may carry a static dipole moment that is transverse to their momentu…
Quantum Internal Structure of Plasmons
Jinlyu Cao, H. A. Fertig, Luis Brey
Plasmons are usually described in terms of macroscopic quantities such as electric fields and currents. However as fundamental excitations of metals they are also quantum objects w…
Quantum Geometric Exciton Drift Velocity
Jinlyu Cao, H. A. Fertig, Luis Brey
We show that the dipole moment of an exciton is uniquely determined by the quantum geometry of its eigenstates, and demonstrate its intimate connection with a quantity we call the…
Plasmonic Dirac Cone in Twisted Bilayer Graphene
Luis Brey, T. Stauber, T. Slipchenko +1
We discuss plasmons of biased twisted bilayer graphene when the Fermi level lies inside the gap. The collective excitations are a network of chiral edge plasmons (CEP) entirely com…
Non-local quantum effects in plasmons of graphene superlattices
Luis Brey, T. Stauber, L. Martín-Moreno +1
By using a non-local, quantum mechanical response function we study graphene plasmons in a one-dimensional superlattice (SL) potential . The SL introduces a quantum…