New critical behavior in unconventional ferromagnetic superconductors

TL;DR

This paper identifies new critical behaviors in unconventional ferromagnetic superconductors, predicting fluctuation-driven phase transitions using the Wilson-Fisher renormalization-group method, with implications for materials like UGe2 and URhGe.

Contribution

It introduces a novel theoretical framework for understanding critical phenomena in ferromagnetic superconductors, highlighting fluctuation-driven first order phase transitions.

Findings

New critical behavior in unconventional superconductors and superfluids.

Prediction of fluctuation-driven first order phase transitions.

Applicability to materials like UGe2 and URhGe.

Abstract

New critical behavior in unconventional superconductors and superfluids is established and described by the Wilson-Fisher renormalization-group method. For certain ordering symmetries a new type of fluctuation-driven first order phase transitions at finite and zero temperature are predicted. The results can be applied to a wide class of ferromagnetic superconducting and superfluid systems, in particular, to itinerant ferromagnets as UGe2 and URhGe.