Multi-k Magnetic Structures in USb0.9Te0.1 and UAs0.8Se0.2 Observed Via Resonant x-Ray Scattering at the U M4 Edge

Experiments with resonant photons at the U M4 edge have been performed on a sample of USb0.9Te0.1, which has an incommensurate magnetic structure with k=k=0.5962 reciprocal lattice units. The reflections of the form kkk, as observed previously in a commensurate k=1/2 system N. Bernhoeft et al., Phys. Rev. B 69, 174415 2004, are observed, removing any doubt that these occur because of multiple scattering or high-order contamination of the incident photon beam. They are clearly connected with the presence of a 3k configuration. Measurements of the kkk reflections from the sample UAs0.8Se0.2 in a magnetic field show that the transition at T50 K is between a low-temperature 2k and high-temperature 3k state and that this transition is sensitive to an applied magnetic field. These experiments stress the need for quantitative theory to explain the intensities of these kkk reflections.

DETLEFS B.;  WILKINS S.B.;  JAVORSKY Pavel;  BLACKBURN Elizabeth;  LANDER Gerard; 

2007-07-18

AMERICAN PHYSICAL SOC

JRC37953

https://publications.jrc.ec.europa.eu/repository/handle/JRC37953,   

10.1103/PhysRevB.75.174403,