Magnetic Skyrmion Lattices in Heavy Fermion Superconductor UPt3

A. Knigavko; B. Rosenstein

doi:10.1103/PhysRevLett.82.1261

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Magnetic Skyrmion Lattices in Heavy Fermion Superconductor UPt3

A. Knigavko, B. Rosenstein

DOI 10.1103/PhysRevLett.82.1261 · Physical Review Letters

T1

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Abstract

Topological analysis of nearly SO(3)spin symmetric Ginzburg-Landau theory, proposed for UPt3 by Machida et al. shows that there exists a new class of solutions carrying two units of magnetic flux—the magnetic Skyrmion. These solutions do not have singular corelike Abrikosov vortices and at low magnetic fields they become lighter for strongly type-II superconductors. Magnetic Skyrmions repel each other as 1/r at distances much larger than the magnetic penetration depth λ, forming a relatively robust triangular lattice. The magnetic induction near Hc1 is found to increase as (H−Hc1)2. This behavior agrees well with experiments.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	0.45	Pressure not reported	unknown