TY - JOUR
T1 - Two-dimensional plasmons in a GaN/AlGaN heterojunction
T2 - Russian Youth Conference on Physics of Semiconductors and Nanostructures, Opto- and Nanoelectronics
AU - Vinnichenko, M. Ya
AU - Shalygin, V.A.
AU - Moldavskaya, M.D.
AU - Artemyev, A.A.
AU - Melentev, Grigory A
AU - Vorobjev, Leonid E
AU - Firsov, D.A.
AU - Korotyeyev, V. V.
AU - Sakharov, A.V.
AU - Zavarin, E.E.
AU - Arteev, D.S.
AU - Lundin, W.V.
AU - Kauppinen, Christoffer
AU - Suihkonen, Sami
N1 - Conference code: 20
M1 - 012014
PY - 2019/4/17
Y1 - 2019/4/17
N2 - We report the studies on optical properties of a GaN/AlGaN heterostructure with a surface metal grating. The fabricated structures were optimized for the observation of 2D plasmon resonances in the spectral range of 2–5 THz. The spectra of the equilibrium optical transmission were experimentally investigated and the 2D plasmon resonance was found. The current-voltage characteristics of the grating sample and a reference sample without grating were measured and the dependence of the hot 2D electron temperature on electric field was established. Terahertz electroluminescence was studied in both samples in the sensitivity band of the Ge:Ga detector in electric fields of up to 400 V/cm. It has been shown that, due to the contribution of nonequilibrium 2D plasmons, the integral photoresponse signal for the sample with a surface metal grating increases 2–4 times as compared with the sample without grating, where the terahertz emission is due only to hot 2D electrons.
AB - We report the studies on optical properties of a GaN/AlGaN heterostructure with a surface metal grating. The fabricated structures were optimized for the observation of 2D plasmon resonances in the spectral range of 2–5 THz. The spectra of the equilibrium optical transmission were experimentally investigated and the 2D plasmon resonance was found. The current-voltage characteristics of the grating sample and a reference sample without grating were measured and the dependence of the hot 2D electron temperature on electric field was established. Terahertz electroluminescence was studied in both samples in the sensitivity band of the Ge:Ga detector in electric fields of up to 400 V/cm. It has been shown that, due to the contribution of nonequilibrium 2D plasmons, the integral photoresponse signal for the sample with a surface metal grating increases 2–4 times as compared with the sample without grating, where the terahertz emission is due only to hot 2D electrons.
UR - http://www.scopus.com/inward/record.url?scp=85065612922&partnerID=8YFLogxK
U2 - 10.1088/1742-6596/1199/1/012014
DO - 10.1088/1742-6596/1199/1/012014
M3 - Article in a proceedings journal
SN - 1742-6588
VL - 1199
JO - Journal of Physics: Conference Series
JF - Journal of Physics: Conference Series
M1 - 012014
ER -