32 citations · 52 across the 8 of their papers we have counts for
8 papers
NMR Tracing of Hyperfine-Mediated Nuclear Spin Diffusion in Fractional Quantum Hall Domain Phases
S. Miyamoto, T. Hatano, S. Watanabe +1
We present an enhanced diffusion of nuclear spin polarization in fractional quantum Hall domain phases at . Resistively-detected NMR mediated by electrically driven domain-…
Localized NMR Mediated by Electrical-Field-Induced Domain Wall Oscillation in Quantum-Hall-Ferromagnet Nanowire
S. Miyamoto, T. Miura, S. Watanabe +2
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 ele…
Nuclear Magnetometry Study of Spin Dynamics in Bilayer Quantum Hall Systems
M. H. Fauzi, S. Watanabe, Y. Hirayama
We performed a nuclear magnetometry study on quantum Hall ferromagnet with a bilayer total filling factor of . We found not only a rapid nuclear relaxation but al…
Anisotropic nuclear-spin diffusion in double quantum wells
T. Hatano, W. Kume, S. Watanabe +3
Nuclear-spin diffusion in double quantum wells (QWs) is examined by using dynamic nuclear polarization (DNP) at a Landau level filling factor spin phase transition (SPT). T…
Anomalous scaling of spin accumulation in ferromagnetic tunnel devices with silicon and germanium
S. Sharma, A. Spiesser, S. P. Dash +6
The magnitude of spin accumulation created in semiconductors by electrical injection of spin-polarized electrons from a ferromagnetic tunnel contact is investigated, focusing on ho…
Spatial distribution of dynamically polarized nuclear spins in electron spin domains in the fractional quantum Hall state studied by nuclear electric resonance
S. Watanabe, G. Igarashi, N. Kumada +1
Nuclear electric resonance (NER) is based on nuclear magnetic resonance mediated by spatial oscillations of electron spin domains excited by a radio frequency (RF) electric field,…