Metallization of nanofilms in strong adiabatic electric fields.
We introduce an effect of metallization of dielectric nanofilms by strong, adiabatically varying electric fields. The metallization causes optical properties of a dielectric film to become similar to those of a plasmonic metal (strong absorption and negative permittivity at low optical frequencies). This is a quantum effect, which is exponentially size-dependent, occurring at fields on the order of 0.1 V/Å and pulse durations ranging from ∼1 fs to ∼10 ns for a film thickness of 3-10 nm.
Durach
Maxim
M
Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia 30303, USA.
Rusina
Anastasia
A
Kling
Matthias F
MF
Stockman
Mark I
MI