title: Localized NMR Mediated by Electrical-Field-Induced Domain Wall Oscillation in Quantum-Hall-Ferromagnet Nanowire.
abstract: We present fractional quantum Hall domain walls confined in a gate-defined wire structure. Our experiments utilize spatial oscillation of domain walls driven by radio frequency electric fields to cause nuclear magnetic resonance. The resulting spectra are discussed in terms of both large quadrupole fields created around the wire and hyperfine fields associated with the oscillating domain walls. This provides the experimental fact that the domain walls survive near the confined geometry despite of potential deformation, by which a localized magnetic resonance is allowed in electrical means.
authors.affiliation: Department of Physics, Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Miyamoto
authors.affiliation: Department of Physics, Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Miura
authors.affiliation: Institute of Science and Engineering, Kanazawa University , Kanazawa 920-1192, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Watanabe
authors.affiliation: Department of Physics, Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan.
authors.forename: K
authors.initials: K
authors.lastname: Nagase
authors.affiliation: Department of Physics, Tohoku University , 6-3 Aramaki Aza Aoba, Aoba-ku, Sendai 980-8578, Japan.|WPI-AIMR, Tohoku University , 2-1-1 Katahira, Aoba-ku, Sendai 980-8577, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hirayama
mesh_terms: D004560:Electricity; D004574:Electromagnetic Fields; D009682:Magnetic Resonance Spectroscopy / Q000379:methods*; D059346:Magnets / Q000737:chemistry*; D053770:Nanowires / Q000737:chemistry* / Q000648:ultrastructure
keywords: Fractional quantum Hall effect; NMR spectroscopy; domain wall; nanowire