Abstract
The heavy-fermion system exhibits a quantum-critical point at separating nonmagnetic and magnetically ordered ground states. The pronounced non-Fermi-liquid behavior at calls for a search for the relevant quantum critical fluctuations. Systematic measurements of the inelastic neutron scattering cross section for reveal rodlike features in the reciprocal plane translating to two-dimensional (2D) fluctuations in real space. We find 3D magnetic ordering peaks for and located on these rods which hence can be viewed as 2D precursors of 3D order.
- Received 9 February 1998
DOI:https://doi.org/10.1103/PhysRevLett.80.5627
©1998 American Physical Society