title: Quantum oscillation of Hall resistance in the extreme quantum limit of an organic conductor (TMTSF)2ClO4.
abstract: We report resistance and magnetic torque experiments under a high magnetic field up to 45 T in a three dimensional quantum Hall (QH) system (TMTSF)(2)ClO(4), where TMTSF = tetramethyltetraselenafulvalene. The Hall resistance shows huge oscillations accompanied with sign reversal after the final QH state, where the Landau level filling factor is unity, is removed above 26 T. The magnetic torque also oscillates with the field. The results suggest that a novel quantum state, where the character of the carriers periodically changes with the field, is stabilized in the extreme quantum limit.
authors.affiliation: National Institute for Materials Science, Tsukuba, Ibaraki 305-0003, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Uji
authors.forename: S
authors.initials: S
authors.lastname: Yasuzuka
authors.forename: T
authors.initials: T
authors.lastname: Konoike
authors.forename: K
authors.initials: K
authors.lastname: Enomoto
authors.forename: J
authors.initials: J
authors.lastname: Yamada
authors.forename: E S
authors.initials: ES
authors.lastname: Choi
authors.forename: D
authors.initials: D
authors.lastname: Graf
authors.forename: J S
authors.initials: JS
authors.lastname: Brooks