Correlation between antiferromagnetic and charge-density-wave order in UPt$_{2}$Si$_{2}$ studied by resonant X-Ray scattering

Abstract

Relationship between antiferromagnetic order with Néel temperature of 35 K and charge-density-wave (CDW) order below 320 K of UPt_22Si_22 has been investigated by resonant X-ray scattering measurements. We have found that a resonant scattering signal develops below the Néel temperature at the { M}_{ 4}M4 absorption edge of uranium with a propagation vector of the CDW order { q}_{ CDW} \simqCDW∼ (0.42, 0, 0). The experimental results reveal that the magnetic structure of UPt_22Si_22 is modulated by the CDW ordering.