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Quantum fluctuation driven first-order phase transition in weak ferromagnetic metals
- DOI:
- 10.1080/14786430500040720
pages 1755-1763
Available online: 21 Feb 2007Abstract
In a local Fermi liquid (LFL), we show that there is a line of weak first-order phase transitions between the ferromagnetic and paramagnetic phases due to purely quantum fluctuations. We predict that an instability towards superconductivity is only possible in the ferromagnetic state. At T = 0 we find a point on the phase diagram where all three phases meet and we call this a quantum triple point (QTP). A simple application of the Gibbs phase rule shows that only these three phases can meet at the QTP. This provides a natural explanation of the absence of superconductivity at this point coming from the paramagnetic side of the phase diagram, as observed in the recently discovered ferromagnetic superconductor, UGe 2.
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- Citation information:
- Available online: 21 Feb 2007
Author affiliations
- a Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USA
- b Department of Physics, Boston College, 140 Commonwealth Avenue, Chestnut Hill, MA 02467, USA E-mail:
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