London Theory for Superconducting Phase Transitions in External Magnetic Fields: Application to UPt3
D. F. Agterberg, Matthew J. W. Dodgson
DOI 10.1103/PhysRevLett.89.017004 · Physical Review Letters
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Abstract
For multicomponent superconductors, it is known that the presence of symmetry breaking fields can lead to multiple superconducting phase transitions. Motivated by recent small angle neutron scattering experiments on the vortex state of UPt3, the London theory in the vicinity of such phase transitions is determined. It is found that the form of this London theory is in general quite different than that for conventional superconductors. This is due to the existence of a diverging correlation length associated with these phase transitions. One striking consequence is that nontrivial vortex lattices exist arbitrarily close to Hc1. Applications to UPt3, CeIn3, U1−xThxBe13, electron doped cuprate superconductors, Sr2RuO4, and MgCNi3 are discussed.
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. | 0.5 | Pressure not reported | onset |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 0.44 | Pressure not reported | midpoint |
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