Abstract
We report on results of electrical resistivity and structural investigations on the cubic modification of FeGe under high pressure. The long-wavelength helical order () is suppressed at a critical pressure . An anomaly at and strong deviations from a Fermi-liquid behavior in a wide pressure range above suggest that the suppression of disagrees with the standard notion of a quantum critical phase transition. The metallic ground state persisting at high pressure can be described by band-structure calculations if zero-point motion is included. The shortest FeGe interatomic distance display discontinuous changes in the pressure dependence close to the phase line.
- Received 19 June 2006
DOI:https://doi.org/10.1103/PhysRevLett.98.047204
©2007 American Physical Society