title: A stable metallic state of (TTPCOO)2NH4 with a mobile dopant.
abstract: Ammonium tetrathiapentalene carboxylate [(TTPCOO)2NH4] was prepared via protonic defect-induction doping without electrochemical oxidation. The high electric conductivity of 13 S cm(-1) and Pauli paramagnetic-like behavior of magnetic susceptibility in a wide temperature range exhibit a melting of the charge degrees of freedom induced by a mobile dopant in a salt bridge. Solid-state (1)H NMR strongly indicates a stable metallic state of this compound down to 4 K.
authors.affiliation: Polymer Materials Unit, National Institute for Materials Science (NIMS), 1-2-1 Sengen, Tsukuba, 305-0047 Japan. kobayashi.yuka@nims.go.jp.
authors.forename: Takeshi
authors.initials: T
authors.lastname: Terauchi
authors.forename: Satoshi
authors.initials: S
authors.lastname: Sumi
authors.forename: Yuka
authors.initials: Y
authors.lastname: Kobayashi
authors.forename: Toshikazu
authors.initials: T
authors.lastname: Nakamura
authors.forename: Ko
authors.initials: K
authors.lastname: Furukawa
authors.forename: Yohji
authors.initials: Y
authors.lastname: Misaki