Penetration of the magnetic field into the twinning plane in type-I and -II superconductors
S. V. Mironov, A. Buzdin
DOI 10.1103/PhysRevB.86.064511 · Physical Review B
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Abstract
It is demonstrated that in the type-I and -II superconductors with weakly transparent twinning planes (TP) the penetration of the external parallel magnetic field into the region of the twinning plane can be energetically favorable. In the type-I superconductors the twinning planes become similar to Josephson junctions and the parallel magnetic field penetrates into the TP in the form of Josephson-like vortices. This leads to an increase in the critical magnetic field values. The corresponding phase diagram in the parameter plane “temperature-magnetic field” essentially differs from the one obtained without taking the finite value of the magnetic field near the TP into account. A comparison between the obtained phase diagrams and experimental data for different type-I superconductors can allow to estimate the value of the TP transparency, which is the only fitting parameter in our theory.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Ba(Fe1-xCox)2As2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Sn 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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