title: Superconductivity. Light-induced superconductivity using a photoactive electric double layer.
abstract: Electric double layers (EDLs) of ionic liquids have been used in superconducting field-effect transistors as nanogap capacitors. Because of the freezing of the ionic motion below ~200 kelvin, modulations of the carrier density have been limited to the high-temperature regime. Here we observe carrier-doping-induced superconductivity in an organic Mott insulator with a photoinduced EDL based on a photochromic spiropyran monolayer. Because the spiropyran can isomerize reversibly between nonionic and zwitterionic isomers through photochemical processes, two distinct built-in electric fields can modulate the carrier density even at cryogenic conditions.
authors: Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, Okazaki, Aichi 444-8585 Japan. RIKEN, Wako, Saitama 351-0198 Japan. msuda@ims.ac.jp yhiroshi@ims.ac.jp.
authors: Masayuki
authors: M
authors: Suda
authors: RIKEN, Wako, Saitama 351-0198 Japan.
authors: Reizo
authors: R
authors: Kato
authors: Research Center of Integrative Molecular Systems (CIMoS), Institute for Molecular Science, Okazaki, Aichi 444-8585 Japan. RIKEN, Wako, Saitama 351-0198 Japan. msuda@ims.ac.jp yhiroshi@ims.ac.jp.
authors: Hiroshi M
authors: HM
authors: Yamamoto