Fermi-Dirac staircase occupation of Floquet bands and current rectification inside the optical gap of metals: An exact approach
Oles Matsyshyn, Justin C. W. Song, Inti Sodemann, Li-kun Shi
Abstract
This work demonstrates exactly that, when coupled to an ideal fermionic bath, the occupation of a driven Floquet band deviates from the Fermi-Dirac distribution function of the Floquet energy, and instead becomes a staircase version of this distribution. This allows us to show the existence of a finite rectified electric current within the optical gap of a metal, even in the limit of vanishing carrier relaxation rates.
Topics & Concepts
Floquet theoryPhysicsElectric fieldQuantum mechanicsHamiltonian (control theory)Quantum electrodynamicsDistribution functionCondensed matter physicsMathematicsNonlinear systemMathematical optimizationQuantum and electron transport phenomenaTopological Materials and PhenomenaQuantum Information and Cryptography