Angular momentum radiation from current-carrying molecular junctions
Zu-Quan Zhang, Jing‐Tao Lü, Jian‐Sheng Wang
Abstract
We consider the radiation of angular momentum (AM) from current-carrying molecular junctions. Using the nonequilibrium Green's function method, we derive a convenient formula for the AM radiation and apply it to a prototypical benzene molecule junction. We discuss the selection rules for inelastic transitions between the molecular angular momentum eigenstates due to a sixfold rotational symmetry. Our study provides important insights into the generation of light with AM from DC-biased molecular junctions.
Topics & Concepts
Angular momentumPhysicsAngular momentum couplingOrbital angular momentum of lightTotal angular momentum quantum numberRadiationNon-equilibrium thermodynamicsAngular momentum operatorCurrent (fluid)Angular momentum of lightRotational transitionRotational symmetrySymmetry (geometry)Eigenvalues and eigenvectorsMomentum (technical analysis)Function (biology)Classical mechanicsQuantum mechanicsMathematicsMechanicsGeometryBiologyThermodynamicsEvolutionary biologyEconomicsFinanceQuantum and electron transport phenomenaMolecular Junctions and NanostructuresQuantum Information and Cryptography