Order parameter symmetry in ferromagnetic superconductors

K. V. Samokhin; M. B. Walker

doi:10.1103/PhysRevB.66.174501

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Order parameter symmetry in ferromagnetic superconductors

K. V. Samokhin, M. B. Walker

DOI 10.1103/PhysRevB.66.174501 · Physical Review B

T1

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Abstract

We analyze the symmetry and nodal structure of the superconducting order parameter in a cubic ferromagnet, such as ZrZn2. We demonstrate how the order parameter symmetry evolves when the electromagnetic interaction of the conduction electrons with the internal magnetic induction and the spin-orbit coupling are taken into account. These interactions break the cubic symmetry and lift the degeneracy of the order parameter. It is shown that the order parameter which appears immediately below the critical temperature has two components, and its symmetry is described by corepresentations of the magnetic point groups. This allows us to make predictions about the location of the gap nodes.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
ZrZn2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
UGe2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown