Fluctuation-induced pair density wave in itinerant ferromagnets
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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 3He 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 pair density wave.
Conduit , G J , Pedder , C J & Green , A G 2013 , ' Fluctuation-induced pair density wave in itinerant ferromagnets ' , Physical Review. B, Condensed matter and materials physics , vol. 87 , no. 12 , 121112 . https://doi.org/10.1103/PhysRevB.87.121112
Physical Review. B, Condensed matter and materials physics
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