Anisotropic magnetic form factor in a detwinned single crystal of BaFe2 As2

K. Kodama, M. Ishikado, S. Wakimoto, K. Kihou, C. H. Lee, A. Iyo, H. Eisaki, S. Shamoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have performed neutron diffraction measurements at 12 K on a single crystal of BaFe2As2, which serves as the parent compound of iron-based superconductors. To investigate the in-plane anisotropy of the magnetic form factor in the antiferromagnetic phase, the single crystal was detwinned. The magnetic structure factor and magnetic form factor are well explained by the spin densities comprising 3dyz electrons with a fraction of approximately 40% and electrons in the other four 3d orbitals each with a fraction of approximately 15%. It is a direct observation of the largely anisotropic spin density relative to the small orthorhombic lattice distortion, (a-b)/(a+b)∼0.3%.

Original languageEnglish
Article number144510
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number14
Publication statusPublished - 2014 Oct 16

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


Dive into the research topics of 'Anisotropic magnetic form factor in a detwinned single crystal of BaFe2 As2'. Together they form a unique fingerprint.

Cite this