Quantum Griffiths phase inside the ferromagnetic phase of Ni${}_{1-x}$V${}_x$

Abstract

We study by means of bulk and local probes the d-metal alloy Ni${}_{1-x}$V${}_x$ close to the quantum critical concentration, $x_c\approx 11.6\%$, where the ferromagnetic transition temperature vanishes. The magnetization-field curve in the ferromagnetic phase takes an anomalous power-law form with a nonuniversal exponent that is strongly $x$-dependent and mirrors the behavior in the paramagnetic phase. Muon spin rotation experiments demonstrate inhomogeneous magnetic order and indicate the presence of dynamic fluctuating magnetic clusters. These results provide strong evidence for a quantum Griffiths phase on the ferromagnetic side of the quantum phase transition.

arXiv comment6 pages + 3 pages supplemental material, final version as published

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• Interplay of itinerant magnetism and reentrant spin-glass behavior in Fe${}_x$Cr${}_{1-x}$
• Signatures of a Quantum Griffiths Phase close to an Electronic Nematic Quantum Phase Transition
• Modeling magnetic evolution and exchange hardening in disordered magnets: The example of Mn${}_{1-x}$Fe${}_x$Ru${}_2$Sn Heusler alloys
• Critical and Griffiths-McCoy singularities in quantum Ising spin-glasses on d-dimensional hypercubic lattices: A series expansion study
• Griffiths-McCoy Singularities in the Dilute Transverse-Field Ising Model: A Numerical Linked Cluster Expansion Study
• Frustration-induced quantum criticality in Ni-doped CePdAl as revealed by the $\mu$SR technique
• Evolution of short-range magnetic correlations in ferromagnetic Ni-V alloys
• The Griffiths phase and beyond: A large deviations study of the magnetic susceptibility of the two-dimensional bond-diluted Ising model
• Quantum Griffiths singularity in a three-dimensional superconductor to Anderson critical insulator transition
• Novel Emergent Phases in a Two-Dimensional Superconductor
• Critical Behavior and Collective Modes at the Superfluid Transition in Amorphous Systems
• Quantum Monte Carlo study of the bond- and site-diluted transverse-field Ising model
• Griffiths Physics in an Ultracold Bose Gas
• Observation of Griffiths-like phase in the quaternary Heusler compound NiFeTiSn
• On the relation between disorder and homogeneity in an amorphous metal