The quantum phase transition of itinerant helimagnets

Abstract

We investigate the quantum phase transition of itinerant electrons from a paramagnet to a state which displays long-period helical structures due to a Dzyaloshinskii instability of the ferromagnetic state. In particular, we study how the self-generated effective long-range interaction recently identified in itinerant quantum ferromagnets is cut-off by the helical ordering. We find that for a sufficiently strong Dzyaloshinskii instability the helimagnetic quantum phase transition is of second order with mean-field exponents. In contrast, for a weak Dzyaloshinskii instability the transition is analogous to that in itinerant quantum ferromagnets, i.e. it is of first order, as has been observed in MnSi.

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References in corpus (3)

• First order transitions and multicritical points in weak itinerant ferromagnets
• Quantum phase transitions in electronic systems
• Quantum critical behavior of itinerant ferromagnets

Cited by in corpus (9)

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• Influence of Generic Scale Invariance on Classical and Quantum Phase Transitions
• Blue Quantum Fog: Chiral Condensation in Quantum Helimagnets
• Metallic State in Cubic FeGe beyond its Quantum Phase Transition
• Quantum phase transitions of magnetic rotons
• Persistent Spin Currents in Helimagnets
• Quantum order-by-disorder near criticality and the secret of partial order in MnSi
• Nonanalytic Corrections to Fermi-Liquid Behavior in Helimagnets
• Infinite critical boson non-Fermi liquid