Disorder dependence of the ferromagnetic quantum phase transition

Abstract

We quantitatively discuss the influence of quenched disorder on the ferromagnetic quantum phase transition in metals, using a theory that describes the coupling of the magnetization to gapless fermionic excitations. In clean systems, the transition is first order below a tricritical temperature T_tc. Quenched disorder is predicted to suppress T_tc until it vanishes for residual resistivities rho_0 on the order of several microOhmcm for typical quantum ferromagnets. We discuss experiments that allow to distinguish the mechanism considered from other possible realizations of a first-order transition.

arXiv comment5pp, 1 figure; additional references

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Cited by in corpus (22)

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• Indication of Ferromagnetic Quantum Critical Point in Kondo Lattice CeRh${}_6$Ge${}_4$
• Localized 4f-electrons in the quantum critical heavy fermion ferromagnet CeRh${}_6$Ge${}_4$
• Quantum critical point in the itinerant ferromagnet Ni${}_{1-x}$Rh${}_x$
• Switching of magnetic ground states across the UIr1-xRhxGe alloy system
• Third law of thermodynamics and the shape of the phase diagram for systems with a first-order quantum phase transition
• Probing the quantum phase transition in Mott insulator BaCoS_2 tuned by pressure and Ni-substitution
• Pressure-induced quantum phase transition in the itinerant ferromagnet UCoGa
• Sign problem free quantum Monte-Carlo study on thermodynamic properties and magnetic phase transitions in orbital-active itinerant ferromagnets
• Continuous ferromagnetic quantum phase transition on an anisotropic Kondo lattice
• Suppression of ferromagnetism governed by a critical lattice parameter in CeTiGe$\_3$ with hydrostatic pressure or V substitution
• Suppression of ferromagnetism and influence of disorder in silicon-substituted CeRh6Ge4
• Evolution of magnetic fluctuations through the Fe-induced paramagnetic to ferromagnetic transition in Cr${}_2$B
• Competing magnetic correlations across the ferromagnetic quantum critical point in the Kondo system CeTi${}_{1-x}$V${}_x$Ge${}_3$: ${}^{51}$V NMR as a local probe
• The quantum ferromagnetic transition in a clean Kondo lattice is discontinuous
• Non-Fermi-liquid behavior in a ferromagnetic heavy fermion system CeTi${}_{1-x}$V${}_x$Ge${}_3$
• Hyperscaling analysis of a disorder-induced ferromagnetic quantum critical point in Ni${}_{1-x}$Rh${}_x$ with $x=0.375$
• Magnetic properties of binary alloys Ni1-xMox and Ni1-yCuy close to critical concentrations
• Magnetic fluctuations in the itinerant ferromagnet LaCrGe3 studied by 139La NMR
• Avoided ferromagnetic quantum critical point in CeZn