Multisubband Plasmons in Doped ZnO Quantum Wells

• DOI: 10.1103/physrevapplied.10.024005
• Publication Date: 2018-08-06T10:15:49Z
• Authors: Miguel Montes Bajo; Julen Tamayo-Arriola; Maxime Hugues; Jose M. Ulloa; Nolwenn Le Biavan; Romain Peretti; Francois H. Julien; Jerome Faist; Jean-Michel Chauveau; Adrian Hierro
• Keywords: [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics]; Materiales; [PHYS.PHYS.PHYS-BIO-PH]Physics [physics]/Physics [physics]/Biological Physics [physics.bio-ph]; 0103 physical sciences; [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic; Física; Electrónica; 01 natural sciences

Highly doped multiple quantum wells (MQWs) are significant for infrared optoelectronics, plasmonics, and the physics of strong light-matter coupling. The authors reveal a multisubband plasmon (MSP) that arises from couplings among several intersubband transitions in (Mg,Zn)O/ZnO MQWs, due to outstandingly dense two-dimensional electron gas. Here MSP energy is up three times constituent transitions, illustrating potential this system optoelectronic applications infrared, which could be extended terahertz range by appropriate quantum-well design.