Emergence of spin-orbit order in the spinel CuCr$_2$O$_4$

K. Tomiyasu; S. Lee; H. Ishibashi; Y. Takahashi; T. Kawamata; Y. Koike; T. Nojima; S. Torii; T. Kamiyama

Emergence of spin-orbit order in the spinel CuCr$_2$O$_4$

Strongly Correlated Electrons 2018-03-20 v1

Authors: K. Tomiyasu , S. Lee , H. Ishibashi , Y. Takahashi , T. Kawamata , Y. Koike , T. Nojima , S. Torii , T. Kamiyama

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Abstract

We determined the magnetic structure of CuCr $_2$ O $_4$ using neutron diffraction and irreducible representation analysis. The measurements identified a new phase between 155 K and 125 K as nearly collinear magnetic ordering in the Cr pyrochlore lattice. Below 125 K, a Cu-Cr ferrimagnetic component develops the noncollinear order. Along with the simultaneously obtained O positions and the quantum effect of spin-orbit coupling, the magnetic structure is understood to involve spin-orbit ordering, accompanied by an appreciably deformed orbital of presumably spin-only Cu and Cr.

Keywords

spinel CuCr2O4 magnetic structure neutron diffraction spin-orbit ordering noncollinear order ferrimagnetic

Cite

@article{arxiv.1803.06447,
  title  = {Emergence of spin-orbit order in the spinel CuCr$_2$O$_4$},
  author = {K. Tomiyasu and S. Lee and H. Ishibashi and Y. Takahashi and T. Kawamata and Y. Koike and T. Nojima and S. Torii and T. Kamiyama},
  journal= {arXiv preprint arXiv:1803.06447},
  year   = {2018}
}

Emergence of spin-orbit order in the spinel CuCr$_2$O$_4$

Abstract

Keywords

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