Predicted Nucleation of Domain Walls in px+ipy Superconductors by a Z2 Symmetry-Breaking Transition in External Magnetic Fields
Vasily Vadimov, Mihail Silaev
DOI 10.1103/PhysRevLett.111.177001 · Physical Review Letters
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Abstract
We show that time reversal symmetry-breaking px+ipy wave superconductors undergo several phase transitions subjected to an external magnetic field or supercurrent. In such a system, the discrete Z2 symmetry can recover before a complete destruction of the order parameter. The domain walls associated with Z2 symmetry can be created in a controllable way by a magnetic field or current sweep according to the Kibble-Zurek scenario. Such domain wall generation can take place in exotic superconductors like Sr2RuO4, thin films of superfluid He3−A, and some heavy fermion compounds.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Sr2RuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| UPt3 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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