Crossover of the dimensionality of 3d spin fluctuations in LaCoPO

M. Majumder; K. Ghoshray; A. Ghoshray; B. Bandyopadhyay; B. Pahari; S. Banerjee

doi:10.1103/PhysRevB.80.212402

Crossover of the dimensionality of 3d spin fluctuations in LaCoPO

Strongly Correlated Electrons 2015-05-14 v2

Authors: M. Majumder , K. Ghoshray , A. Ghoshray , B. Bandyopadhyay , B. Pahari , S. Banerjee

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Abstract

dc magnetization and 31^P spin lattice relaxation rate in the polycrystalline sample of LaCoPO suggest a spin fluctuation dominated ferromagnetically ordered state. Moreover, NMR data clearly indicate a crossover from 2D to 3D spin fluctuations across T_C. In contrast to isotropic hyperfine field, H_hf at the 31^P site in LaFePO, H_hf is anisotropic in LaCoPO. The data of spin lattice relaxation rate also exhibit anisotropic spin fluctuation. The anisotropy vanishes near T_C.

Keywords

LaCoPO spin fluctuations dimensional crossover NMR ferromagnetism anisotropy

Cite

@article{arxiv.0909.0876,
  title  = {Crossover of the dimensionality of 3d spin fluctuations in LaCoPO},
  author = {M. Majumder and K. Ghoshray and A. Ghoshray and B. Bandyopadhyay and B. Pahari and S. Banerjee},
  journal= {arXiv preprint arXiv:0909.0876},
  year   = {2015}
}

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