On the phase diagrams of the ferromagnetic superconductors ZrZn2 and UGe2

  • Cottam M
  • Shopova D
  • Uzunov D
  • 2

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Abstract

A general phenomenological theory is presented for the phase behavior of ferromagnetic superconductors with spin-triplet electron Cooper pairing. The theory accounts in detail for the temperature-pressure phase diagram of ZrZn$_2$, while the main features of the diagram for UGe$_2$ are also described. Quantitative criteria are deduced for the U-type (type I) and Zr-type (type II) unconventional ferromagnetic superconductors with spin-triplet Cooper electron pairing. Some basic properties of quantum phase transitions are also elucidated.

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Authors

  • Michael G. Cottam

  • Diana V. Shopova

  • Dimo I. Uzunov

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