title: Difference between far-infrared photoconductivity spectroscopy and absorption spectroscopy: theoretical evidence of the electron reservoir mechanism.
abstract: The intriguing difference between far-infrared photoconductivity spectroscopy and absorption spectroscopy in the measurement of the magnetoplasmon frequency in GaAs quantum wells reported by Holland et al. [Phys. Rev. Lett. 93, 186804 (2004)] remains unexplained to date. This Letter provides a consistent mechanism to solve this puzzle. The mechanism is based on the electron reservoir model for the integer quantum Hall effect in graphene [Phys. Lett. A 376, 616 (2012)]. We predict sharp kinks to appear in the magnetic induction dependence of the magnetoplasmon frequency at very low temperatures such as 14 mK in the same GaAs quantum well sample used by Holland et al.
authors.affiliation: Department of Physics, Tokai University, Kitakaname 4-1-1, Hiratsuka, Kanagawa 259-1292, Japan.
authors.forename: Tadashi
authors.initials: T
authors.lastname: Toyoda
authors.forename: Maho
authors.initials: M
authors.lastname: Fujita
authors.forename: Tomohisa
authors.initials: T
authors.lastname: Uchida
authors.forename: Nobuyoshi
authors.initials: N
authors.lastname: Hiraiwa
authors.forename: Taturo
authors.initials: T
authors.lastname: Fukuda
authors.forename: Hideki
authors.initials: H
authors.lastname: Koizumi
authors.forename: Chao
authors.initials: C
authors.lastname: Zhang