title: Quantum Critical Behavior in a Concentrated Ternary Solid Solution.
abstract: The face centered cubic (fcc) alloy NiCoCrx with x ≈ 1 is found to be close to the Cr concentration where the ferromagnetic transition temperature, Tc, goes to 0. Near this composition these alloys exhibit a resistivity linear in temperature to 2 K, a linear magnetoresistance, an excess -TlnT (or power law) contribution to the low temperature heat capacity, and excess low temperature entropy. All of the low temperature electrical, magnetic and thermodynamic properties of the alloys with compositions near x ≈ 1 are not typical of a Fermi liquid and suggest strong magnetic fluctuations associated with a quantum critical region. The limit of extreme chemical disorder in this simple fcc material thus provides a novel and unique platform to study quantum critical behavior in a highly tunable system.
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: Brian C
authors.initials: BC
authors.lastname: Sales
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: Ke
authors.initials: K
authors.lastname: Jin
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: Hongbin
authors.initials: H
authors.lastname: Bei
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: G Malcolm
authors.initials: GM
authors.lastname: Stocks
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: German D
authors.initials: GD
authors.lastname: Samolyuk
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: Andrew F
authors.initials: AF
authors.lastname: May
authors.affiliation: Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA 37831-6056.
authors.forename: Michael A
authors.initials: MA
authors.lastname: McGuire