Topological Structure of the Order Parameter of Unconventional Superconductors Based on d- and f- Elements

The superconducting order parameter (SOP) of a triplet superconductor UTe2 was constructed using the topological space group approach, in which, in contrast to phenomenological and topological approaches, the single pair function and phase winding in condensate are different quantities. The connecti...

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Published in:Symmetry (Basel) 2023-01, Vol.15 (2), p.376
Main Authors: Yarzhemsky, Victor G., Teplyakov, Egor A.
Format: Article
Language:English
Subjects:
chiral superconductors
Cooper pair symmetry
Experiments
Magnetic fields
magnetic groups
NMR
Nuclear magnetic resonance
Order parameters
Superconductivity
Symmetry
Temperature
Topological superconductors
Unconventional superconductors
Winding
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Teplyakov, Egor A.
description The superconducting order parameter (SOP) of a triplet superconductor UTe2 was constructed using the topological space group approach, in which, in contrast to phenomenological and topological approaches, the single pair function and phase winding in condensate are different quantities. The connection between them is investigated for the D2h point group and the m′m′m magnetic group. It is shown how a non-unitary pair function of UTe2 can be constructed using one-dimensional real irreducible representations and Ginzburg–Landau phase winding. It is also shown that the total phase winding is non-zero in magnetic symmetry only. Experimental data on the superconducting order parameter of topological superconductors UPt3, Sr2RuO4, LaPt3P, and UTe2 are considered and peculiarities of their nodal structures are connected with the theoretical results of the topological space group approach.
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subjects chiral superconductors
Cooper pair symmetry
Experiments
Magnetic fields
magnetic groups
NMR
Nuclear magnetic resonance
Order parameters
Superconductivity
Symmetry
Temperature
Topological superconductors
Unconventional superconductors
Winding
title Topological Structure of the Order Parameter of Unconventional Superconductors Based on d- and f- Elements
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