title: Localized surface plasmons in structures with linear Au nanoantennas on a SiO2/Si surface.
abstract: The study of infrared absorption by linear gold nanoantennas fabricated on a Si surface with underlying SiO2layers of various thicknesses allowed the penetration depth of localized surface plasmons into SiO2to be determined. The value of the penetration depth derived experimentally (20 ± 10 nm) corresponds to that obtained from electromagnetic simulations (12.9-30.0 nm). Coupling between plasmonic excitations of gold nanoantennas and optical phonons in SiO2leads to the appearance of new plasmon-phonon modes observed in the infrared transmission spectra the frequencies of which are well predicted by the simulations.
authors.affiliation: Novosibirsk State University, Pirogov 2, 630090, Novosibirsk, Russia; Rzhanov Institute of Semiconductor Physics RAS, Lavrentiev Ave. 13, 630090, Novosibirsk, Russia.
authors.forename: Ilya A
authors.initials: IA
authors.lastname: Milekhin
authors.affiliation: Novosibirsk State University, Pirogov 2, 630090, Novosibirsk, Russia; Rzhanov Institute of Semiconductor Physics RAS, Novosibirsk Branch "TDIAM", Lavrentiev Ave. 2/1, Novosibirsk, 630090, Russia.
authors.forename: Sergei A
authors.initials: SA
authors.lastname: Kuznetsov
authors.affiliation: Novosibirsk State University, Pirogov 2, 630090, Novosibirsk, Russia; Rzhanov Institute of Semiconductor Physics RAS, Lavrentiev Ave. 13, 630090, Novosibirsk, Russia.
authors.forename: Ekaterina E
authors.initials: EE
authors.lastname: Rodyakina
authors.affiliation: Novosibirsk State University, Pirogov 2, 630090, Novosibirsk, Russia; Rzhanov Institute of Semiconductor Physics RAS, Lavrentiev Ave. 13, 630090, Novosibirsk, Russia.
authors.forename: Alexander G
authors.initials: AG
authors.lastname: Milekhin
authors.affiliation: Novosibirsk State University, Pirogov 2, 630090, Novosibirsk, Russia; Rzhanov Institute of Semiconductor Physics RAS, Lavrentiev Ave. 13, 630090, Novosibirsk, Russia.
authors.forename: Alexander V
authors.initials: AV
authors.lastname: Latyshev
authors.affiliation: Semiconductor Physics, Technische Universität Chemnitz, Chemnitz, Germany.
authors.forename: Dietrich R T
authors.initials: DR
authors.lastname: Zahn
keywords: SiO2; localised surface plasmon resonance; nanoantenna array; phonons; plasmon–phonon interaction