Folded and confined one-dimensional plasmons in modulated wires

Florent Perez (1) , Bernard Jusserand (2) , Claus Dahl , Marcel Filoche (3) , Laurence Ferlazzo-Manin , Bernard Etienne (2)

1 INSP - Institut des Nanosciences de Paris
2 LPN - Laboratoire de photonique et de nanostructures
3 LPMC - Laboratoire de physique de la matière condensée

We demonstrate theoretically and experimentally that one-dimensional plasmons of doped wires are either extended or longitudinally confined when the lateral width of the wires is periodically modulated. Theoretical dispersion curves, calculated within a classical framework, reproduce well the experimental dispersion deduced from Raman scattering on deep etched modulated wires. Zone-edge gap openings, increasing with the modulation amplitude, are exhibited. We show that deep etching allows a good control of complex geometries and provides quasi-abrupt boundary conditions.

Keywords: GaAs/Al x Ga 1−x As; low dimensional electron gases; quantum wires; plasmon; reactive ionic etching

Domains: Physics [physics]; Condensed Matter [cond-mat]; Disordered Systems and Neural Networks [cond-mat.dis-nn]; Physics [physics]; Condensed Matter [cond-mat]; Soft Condensed Matter [cond-mat.soft]; Life Sciences [q-bio]; Human health and pathology; Pulmonology and respiratory tract; Engineering Sciences [physics]; Optics / Photonic

Florent Perez, Bernard Jusserand, Claus Dahl, Marcel Filoche, Laurence Ferlazzo-Manin, et al.. Folded and confined one-dimensional plasmons in modulated wires. Superlattices and Microstructures, 1997, 22 (2), pp.257-260. ⟨10.1006/spmi.1996.0346⟩. ⟨hal-02442495⟩