Abstract
We report neutron diffraction experiments performed in the tetragonal antiferromagnetic heavy fermion system in its phase diagram up to the vicinity of the critical concentration , where long range magnetic order is suppressed. The propagation vector of the magnetic structure is found to be with increasing from to when increases from to . Surprisingly, for , the order has changed drastically and a commensurate antiferromagnetism with is found. This concentration is located in the proximity of the quantum critical point where superconductivity is expected.
- Received 16 May 2014
- Revised 2 July 2014
DOI:https://doi.org/10.1103/PhysRevB.90.014423
©2014 American Physical Society