Quantum triple point and quantum critical endpoints in metallic magnets

Abstract

In low-temperature metallic magnets, ferromagnetic (FM) and antiferromagnetic (AFM) orders can exist in a single system in different parts of the phase diagram as a function of some control parameter. These phases can be adjacent, or exist concurrently, resulting in a phase transition between a FM phase and an AFM one, or between a phase of concurrent FM and AFM order and either of the pure phases. We show that universal quantum fluctuations qualitatively alter the known phase diagrams for classical magnets: They shrink the region of concurrent FM and AFM order, change various transitions from second to first order, and, in the presence of a magnetic field, lead to either a quantum triple point where the FM, AFM and paramagnetic phases coexist, or to a quantum critical end point.

arXiv comment5pp, 4 figs

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Cited by in corpus (20)

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• Formation of short-range magnetic order and avoided ferromagnetic quantum criticality in pressurized LaCrGe${}_3$
• Van der Waals universality near a quantum tricritical point
• Quantum tricritical point in the temperature-pressure-magnetic field phase diagram of CeTiGe${}_3$
• Family-Vicsek dynamical scaling and Kardar-Parisi-Zhang-like superdiffusive growth of surface roughness in a driven one-dimensional quasiperiodic model
• Magnetic field driven quantum criticality in antiferromagnetic CePtIn4
• Mechanism for transitions between ferromagnetic and antiferromagnetic orders in $d$-electron metallic magnets
• Avoided ferromagnetic quantum critical point in pressurized La${}_5$Co${}_2$Ge${}_3$
• Magnetic domain depinning as possible evidence for two ferromagnetic phases in LaCrGe${}_3$
• Unfolding of antiferromagnetic phases and multicritical points in a two-orbital model for Uranium compounds under pressure and magnetic field
• Field-induced quantum critical point in the new itinerant antiferromagnet Ti${}_3$Cu${}_4$
• Chiral Quantum Phases and Tricriticality in a Dicke Triangle
• Determination of the magnetic q vectors in the heavy fermion superconductor Ce3PtIn11
• Magnetic field induced antiferromagnetic tricritical points in Ce${}_2$Sb and Ce${}_2$Bi
• Ferromagnetic and metamagnetic transitions in itinerant electron systems: a microscopic study
• Pressure-induced suppression of ferromagnetism in CePd${}_2$P${}_2$
• Magnetization process of a quasi-two-dimensional quantum magnet: Two-step symmetry restoration and dimensional reduction
• Signatures of two ferromagnetic states and goniopolarity in LaCrGe3 in the Hall effect
• Effect of Ni substitution on the fragile magnetic system ${\text{La}}_5{\text{Co}}_2{\text{Ge}}_3$
• A New Twist on the Electroclinic Critical Point: Type I and Type II Smectic $C^{\ast }$ Systems