Anisotropic three-dimensional magnetism in CaFe2As2

R. J. McQueeney; S. O. Diallo; V. P. Antropov; G. Samolyuk; C. Broholm; N. Ni; S. Nandi; M. Yethiraj; J. L. Zarestky; J. J. Pulikkotil; A. Kreyssig; M. D. Lumsden; B. N. Harmon; P. C. Canfield; A. I. Goldman

doi:10.1103/PhysRevLett.101.227205

Anisotropic three-dimensional magnetism in CaFe2As2

Superconductivity 2009-11-13 v1 Strongly Correlated Electrons

Authors: R. J. McQueeney , S. O. Diallo , V. P. Antropov , G. Samolyuk , C. Broholm , N. Ni , S. Nandi , M. Yethiraj , J. L. Zarestky , J. J. Pulikkotil , A. Kreyssig , M. D. Lumsden , B. N. Harmon , P. C. Canfield , A. I. Goldman

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Inelastic neutron scattering measurements on the low energy spin waves in CaFe2As2 show that the magnetic exchange interactions in the Fe layers are exceptionally large and similar to the cuprates. However, the exchange between layers is ~10% of the coupling in the layers and the magnetism is more appropriately categorized as anisotropic three-dimensional, in contrast to the two-dimensional cuprates. Band structure calculations of the spin dynamics and magnetic exchange interactions are in good agreement with the experimental data.

Keywords

spin excitations in condensed matter magnetic anisotropy frustrated magnetism

Cite

@article{arxiv.0809.1410,
  title  = {Anisotropic three-dimensional magnetism in CaFe2As2},
  author = {R. J. McQueeney and S. O. Diallo and V. P. Antropov and G. Samolyuk and C. Broholm and N. Ni and S. Nandi and M. Yethiraj and J. L. Zarestky and J. J. Pulikkotil and A. Kreyssig and M. D. Lumsden and B. N. Harmon and P. C. Canfield and A. I. Goldman},
  journal= {arXiv preprint arXiv:0809.1410},
  year   = {2009}
}

Comments

17 pages, 3 figures

Anisotropic three-dimensional magnetism in CaFe2As2

Abstract

Keywords

Cite

Comments

Related papers