First-order superconducting transition near a ferromagnetic quantum critical point

Andrey V. Chubukov, Alexander M. Finkel'stein, Robert Haslinger, Dirk K. Morr

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Abstract

We address the issue of how triplet superconductivity emerges in an electronic system near a ferromagnetic quantum critical point (FQCP). Previous studies found that the superconducting transition is of second order, and [Formula presented] is strongly reduced near the FQCP due to pair-breaking effects from thermal spin fluctuations. In contrast, we demonstrate that near the FQCP, the system avoids pair-breaking effects by undergoing a first order transition at a much larger [Formula presented]. A second order superconducting transition emerges only at some distance from the FQCP.

Original languageEnglish (US)
Article number077002
Pages (from-to)077002/1-077002/4
Number of pages1
JournalPhysical Review Letters
Volume90
Issue number7
DOIs
StatePublished - Feb 21 2003

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