Considerable enhancement of the critical current in a superconducting film by a magnetized magnetic strip
D. Y. Vodolazov, B. A. Gribkov, S. A. Gusev, A. Yu. Klimov, Yu. N. Nozdrin, V. V. Rogov, S. N. Vdovichev
DOI 10.1103/PhysRevB.72.064509 · Physical Review B
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Abstract
We show that a magnetic strip on top of a superconducting strip magnetized in a specified direction may considerably enhance the critical current in the sample. At fixed magnetization of the magnet we observed the diode effect—the value of the critical current depends on the direction of the transport current. We explain these effects by a influence of the nonuniform magnetic field induced by the magnet on the current distribution in the superconducting strip. The experiment on a hybrid Nb∕Co structure confirmed the predicted variation of the critical current with a changing value of magnetization and direction of the transport current.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Nb Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 9.2 | Pressure not reported | unknown |
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