제목: One-dimensional quantum plasmons and their applications
일시: 2021년 10월 19일(화) 5:00 P.M
연사: 유석재(인하대학교)
Abstract:
Squeezing
electrons into low dimension introduces strong quantum effects, resulting in
unique properties that cannot be found in higher-dimensional counterparts.
Electrons in one-dimensional (1D) metals are no longer quasi-free particles,
but they behave collectively as a strongly correlated quantum matter, namely, a
Luttinger liquid. The quantum plasmons in 1D exhibit intriguing electrical and
optical properties: the spin-charge separation, the power-law scaling of
tunneling conductance, and the forbidden backscattering of plasmons. These
quantum properties are not only of fundamental interest but also have a great
potential for electro-optical applications. In this talk, we review the
fundamentals of the Luttinger liquid and the experimental observation. We also
introduce our recent works on the Luttinger liquid plasmons: (1) electrically
tunable optical plasmons in mixed dimensional van der Waals heterostructures
and (2) the Luttinger liquid-based infrared light-emitting devices.