TY - JOUR
T1 - Nuclear spin polarization and relaxation probed by spin phase transition peak
AU - Watanabe, S.
AU - Fauzi, M. H.
AU - Kumada, N.
AU - Hirayama, Y.
PY - 2010/10
Y1 - 2010/10
N2 - We perform resistively-detected nuclear-spin relaxation measurements by using the spin phase transition (SPT) peak in the fractional quantum Hall system at the flling factor ν = 2/3. We investigate nuclear spin relaxation for several electronic systems under a spatially inhomogeneous nuclear spin polarization. When Skyrmions are introduced in the ground state, the position of the SPT peak shifts to higher magnetic feld. This result indicates that Skyrmions relax nuclear spins polarized anti-parallel to the external magnetic feld more effectively than those parallel to the magnetic feld.
AB - We perform resistively-detected nuclear-spin relaxation measurements by using the spin phase transition (SPT) peak in the fractional quantum Hall system at the flling factor ν = 2/3. We investigate nuclear spin relaxation for several electronic systems under a spatially inhomogeneous nuclear spin polarization. When Skyrmions are introduced in the ground state, the position of the SPT peak shifts to higher magnetic feld. This result indicates that Skyrmions relax nuclear spins polarized anti-parallel to the external magnetic feld more effectively than those parallel to the magnetic feld.
KW - Nuclear spin polarization
KW - Nuclear spin relaxation
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U2 - 10.1002/pssc.200983904
DO - 10.1002/pssc.200983904
M3 - Article
AN - SCOPUS:78449244371
SN - 1862-6351
VL - 7
SP - 2570
EP - 2573
JO - Physica Status Solidi (C) Current Topics in Solid State Physics
JF - Physica Status Solidi (C) Current Topics in Solid State Physics
IS - 10
ER -