### Abstract

We investigated effects of the direction of in-plane magnetic field B_{∥} on the phase transition in the quantum Hall ferromagnet at Landau-level filling factor ν = frac(2, 3) by the nuclear-spin relaxation measurements. We controlled the angle φ between the direction of B_{∥} and a current I; when B_{∥} is parallel (perpendicular) to I, φ = 0^{{ring operator}}(φ = 90^{{ring operator}}) . We found that the nuclear spin relaxation rate T_{1}^{- 1} at φ = 0^{{ring operator}} is about twice as much as that at φ = 90^{{ring operator}}. We discuss the anisotropic behavior of T_{1}^{- 1} in term of a suppression of low-frequency electron spin fluctuations by B_{∥} at φ = 90^{{ring operator}}.

Original language | English |
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Pages (from-to) | 1175-1177 |

Number of pages | 3 |

Journal | Physica E: Low-Dimensional Systems and Nanostructures |

Volume | 40 |

Issue number | 5 |

DOIs | |

Publication status | Published - 2008 Mar 1 |

### Keywords

- Fractional quantum Hall state
- Nuclear spin
- Tilted magnetic fields

### ASJC Scopus subject areas

- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics

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## Cite this

*Physica E: Low-Dimensional Systems and Nanostructures*,

*40*(5), 1175-1177. https://doi.org/10.1016/j.physe.2007.08.113