Fluctuation-induced pair density wave in itinerant ferromagnets

Abstract

Magnetic fluctuations near to quantum criticality can have profound effects. They lead to characteristic scaling at high temperature which may ultimately give way to a reconstruction of the phase diagram and the formation of new phases at low temperatures. The ferromagnet UGe2 is unstable to p-wave superconducting order -- an effect presaged by the superfluidity in He3 -- whereas in CeFePO fluctuations drive the formation of spiral magnetic order. Here we develop a general quantum order-by-disorder description of these systems that encompasses both of these instabilities within a unified framework. This allows us to demonstrate that in fact these instabilities intertwine to form a new phase, a pair density wave.

Accepted for publication in Phys Rev B Rapid Communications

References in corpus (9)

• Quantum criticality
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• Formation of a Nematic Fluid at High Fields in Sr3Ru2O7
• Quantum critical behavior in itinerant electron systems -- Eliashberg theory and instability of a ferromagnetic quantum-critical point
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• Itinerant ferromagnetism in an atomic Fermi gas: Influence of population imbalance
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• Non-analytic behavior of 2D itinerant ferromagnets
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Cited by in corpus (9)

• Quantum Order-by-Disorder in Strongly Correlated Metals
• Competing p-wave orders
• Magnetic hard-axis ordering near ferromagnetic quantum criticality
• Resummation of fluctuations near ferromagnetic quantum critical points
• Itinerant ferromagnetism with finite ranged interactions
• High-fidelity pseudopotentials for the contact interaction
• Pairing gaps near ferromagnetic quantum critical points
• Ferromagnetic and metamagnetic transitions in itinerant electron systems: a microscopic study
• Electronic spin-triplet nematic with a twist