Nuclear spin polarization and relaxation probed by spin phase transition peak

S. Watanabe; Fauzi Mohammad Hamzah; N. Kumada; Yoshiro Hirayama

doi:10.1002/pssc.200983904

Nuclear spin polarization and relaxation probed by spin phase transition peak

S. Watanabe, Fauzi Mohammad Hamzah, N. Kumada, Yoshiro Hirayama

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	2570-2573
Number of pages	4
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	7
Issue number	10
DOIs	https://doi.org/10.1002/pssc.200983904
Publication status	Published - 2010 Oct 1

Keywords

Nuclear spin polarization
Nuclear spin relaxation

ASJC Scopus subject areas

Condensed Matter Physics

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keywords = "Nuclear spin polarization, Nuclear spin relaxation",

author = "S. Watanabe and {Mohammad Hamzah}, Fauzi and N. Kumada and Yoshiro Hirayama",

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T1 - Nuclear spin polarization and relaxation probed by spin phase transition peak

AU - Watanabe, S.

AU - Mohammad Hamzah, Fauzi

AU - Kumada, N.

AU - Hirayama, Yoshiro

PY - 2010/10/1

Y1 - 2010/10/1

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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JO - Physica Status Solidi C: Conferences

JF - Physica Status Solidi C: Conferences

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Nuclear spin polarization and relaxation probed by spin phase transition peak

Abstract

Keywords

ASJC Scopus subject areas

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