title: Observation of pinning mode of stripe phases of 2D systems in high Landau levels.
abstract: We study the radio-frequency diagonal conductivities of the anisotropic stripe phases of higher Landau levels near half-integer fillings. In the hard direction, in which larger dc resistivity occurs, the spectrum exhibits a striking resonance, while in the orthogonal, easy direction, no resonance is discernible. The resonance is interpreted as a pinning mode of the stripe phase.
authors.affiliation: National High Magnetic Field Laboratory, Tallahassee, Florida 32306, USA.
authors.forename: G
authors.initials: G
authors.lastname: Sambandamurthy
authors.forename: R M
authors.initials: RM
authors.lastname: Lewis
authors.forename: Han
authors.initials: H
authors.lastname: Zhu
authors.forename: Y P
authors.initials: YP
authors.lastname: Chen
authors.forename: L W
authors.initials: LW
authors.lastname: Engel
authors.forename: D C
authors.initials: DC
authors.lastname: Tsui
authors.forename: L N
authors.initials: LN
authors.lastname: Pfeiffer
authors.forename: K W
authors.initials: KW
authors.lastname: West