Neutron Diffraction Study on Single-crystalline UAu${_2}$Si$_2$

Chihiro Tabata; Milan Klicpera; Bachir Ouladdiaf; Hiraku Saito; Michal Vališka; Klára Uhlířová; Naoyuki Miura; Vladimír Sechovský; Hiroshi Amitsuka

doi:10.1103/PhysRevB.96.214442

Neutron Diffraction Study on Single-crystalline UAu${_2}$Si$_2$

Strongly Correlated Electrons 2018-02-14 v1

Authors: Chihiro Tabata , Milan Klicpera , Bachir Ouladdiaf , Hiraku Saito , Michal Vališka , Klára Uhlířová , Naoyuki Miura , Vladimír Sechovský , Hiroshi Amitsuka

View on arXiv ↗ PDF ↗ DOI ↗

Abstract

Magnetic structure of tetragonal UAu $_2$ Si $_2$ was investigated by single-crystal neutron diffraction experiments. Below $T_{\rm N}$ = 20 K it orders antiferromagnetically with a propagation vector of $k = (2/3, 0, 0)$ and magnetic moments of uranium ions pointing along the tetragonal $c$ -axis. Weak signs of the presence of a ferromagnetic component of magnetic moment were traced out.Taking into account a group theory calculation and experimental results of magnetization and $^{29}$ Si-NMR, the magnetic structure is determined to be a squared-up antiferromagnetic structure, with a stacking sequence ( $+ + -$ ) of the ferromagnetic $ac$ -plane sheets along the $a$ -axis. This result highlights similar magnetic correlations in UAu $_2$ Si $_2$ and isostructural URu $_2$ Si $_2$ .

Keywords

magnetic structure phase transitions frustrated magnetism

Cite

@article{arxiv.1712.05504,
  title  = {Neutron Diffraction Study on Single-crystalline UAu${_2}$Si$_2$},
  author = {Chihiro Tabata and Milan Klicpera and Bachir Ouladdiaf and Hiraku Saito and Michal Vališka and Klára Uhlířová and Naoyuki Miura and Vladimír Sechovský and Hiroshi Amitsuka},
  journal= {arXiv preprint arXiv:1712.05504},
  year   = {2018}
}

Comments

7 pages, 7 figures

Neutron Diffraction Study on Single-crystalline UAu${_2}$Si$_2$

Abstract

Keywords

Cite

Comments

Related papers