Nuclear-spin-related resistance enhancements observed over a wide range of magnetic fields

K. Hashimoto; T. Saku; Y. Hirayama

doi:10.1103/PhysRevB.69.153306

Nuclear-spin-related resistance enhancements observed over a wide range of magnetic fields

K. Hashimoto, T. Saku, Y. Hirayama

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

21 Citations (Scopus)

Abstract

Slow enhancements in the longitudinal resistance (R_xx) due to nuclear spin polarization are studied around Landau-level filling factors of v=2/3 and 3/5 as functions of both the filling factor and magnetic field. The R_xx enhancement appears not only at the v=2/3 and 3/5 spin transitions observed around magnetic fields of B =6.9 and 8.6 T respectively, but also over extended regions at higher and lower magnetic fields along the "flanks" of the v=2/3 and 3/5 quantum Hall states. Analyses based on the coincidence of spin-split Landau levels for composite fermions provide reasonable account of the R_xx enhancements observed in a wide range of magnetic field.

Original language	English
Article number	153306
Pages (from-to)	153306-1-153306-3
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	69
Issue number	15
DOIs	https://doi.org/10.1103/PhysRevB.69.153306
Publication status	Published - 2004 Apr
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.69.153306

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abstract = "Slow enhancements in the longitudinal resistance (Rxx) due to nuclear spin polarization are studied around Landau-level filling factors of v=2/3 and 3/5 as functions of both the filling factor and magnetic field. The Rxx enhancement appears not only at the v=2/3 and 3/5 spin transitions observed around magnetic fields of B =6.9 and 8.6 T respectively, but also over extended regions at higher and lower magnetic fields along the {"}flanks{"} of the v=2/3 and 3/5 quantum Hall states. Analyses based on the coincidence of spin-split Landau levels for composite fermions provide reasonable account of the Rxx enhancements observed in a wide range of magnetic field.",

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AU - Saku, T.

AU - Hirayama, Y.

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N2 - Slow enhancements in the longitudinal resistance (Rxx) due to nuclear spin polarization are studied around Landau-level filling factors of v=2/3 and 3/5 as functions of both the filling factor and magnetic field. The Rxx enhancement appears not only at the v=2/3 and 3/5 spin transitions observed around magnetic fields of B =6.9 and 8.6 T respectively, but also over extended regions at higher and lower magnetic fields along the "flanks" of the v=2/3 and 3/5 quantum Hall states. Analyses based on the coincidence of spin-split Landau levels for composite fermions provide reasonable account of the Rxx enhancements observed in a wide range of magnetic field.

AB - Slow enhancements in the longitudinal resistance (Rxx) due to nuclear spin polarization are studied around Landau-level filling factors of v=2/3 and 3/5 as functions of both the filling factor and magnetic field. The Rxx enhancement appears not only at the v=2/3 and 3/5 spin transitions observed around magnetic fields of B =6.9 and 8.6 T respectively, but also over extended regions at higher and lower magnetic fields along the "flanks" of the v=2/3 and 3/5 quantum Hall states. Analyses based on the coincidence of spin-split Landau levels for composite fermions provide reasonable account of the Rxx enhancements observed in a wide range of magnetic field.

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Nuclear-spin-related resistance enhancements observed over a wide range of magnetic fields

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