Influence of Spin-Polarized Current on Superconductivity and the Realization of Large Magnetoresistance
Guo-Xing Miao, KapSoo Yoon, Tiffany S. Santos, Jagadeesh S. Moodera
DOI 10.1103/PhysRevLett.98.267001 · Physical Review Letters
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Abstract
The superconducting state can be influenced by injecting spin-polarized current in a controlled manner by properly tailoring the interfacial transmittivity between a ferromagnet (F) and a superconductor (S), resulting in a large magnetoresistance of over 1100% for a F/I/S/I/F multilayer system (I insulator). Because of the competition between ferromagnetism and superconductivity, the superconducting transition temperature (TC) in the spin-parallel configuration is shifted below that in the spin antiparallel configuration. The TC shift is attributed to ferromagnet-induced nonequilibrium spin carriers in the superconductors.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.697 | Pressure not reported | midpoint |
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