title: Signatures of a quantum Griffiths phase in a d-metal alloy close to its ferromagnetic quantum critical point.
abstract: We report magnetization measurements close to the ferromagnetic quantum phase transition of the d-metal alloy Ni(1 - x)V(x) at a vanadium concentration of x(c)≈11.4%. In the diluted regime (x > x(c)), the temperature (T) and magnetic field (H) dependences of the magnetization are characterized by nonuniversal power laws and display H/T scaling in a wide temperature and field range. The exponents vary strongly with x and follow the predictions of a quantum Griffiths phase. We also discuss the deviations and limits of the quantum Griffiths phase as well as the phase boundaries due to bulk and cluster physics.
authors.affiliation: Department of Physics, Kent State University, Kent, OH 44242, USA.
authors.forename: Almut
authors.initials: A
authors.lastname: Schroeder
authors.forename: Sara
authors.initials: S
authors.lastname: Ubaid-Kassis
authors.forename: Thomas
authors.initials: T
authors.lastname: Vojta