Ferromagnetic superconductivity driven by changing Fermi surface topology

KG Sandeman, GG Lonzarich, Andrew Schofield

Research output: Contribution to journalArticle

96 Citations (Scopus)


We introduce a simple but powerful zero temperature Stoner model to explain the unusual phase dia-gram of the ferromagnetic superconductor, UGe2. Triplet superconductivity is driven in the ferromagnetic phase by tuning the majority spin Fermi level through one of two peaks in the paramagnetic density of states (DOS). Each peak is associated with a metamagnetic jump in magnetization. The twin-peak DOS may be derived from a tight-binding, quasi-one-dimensional band structure, inspired by previous band-structure calculations.
Original languageEnglish
Pages (from-to)167005
Number of pages1
JournalPhysical Review Letters
Issue number16
Early online date1 Apr 2003
Publication statusPublished - 1 Apr 2003


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