Quay, C. H. L. and Weideneder, M. and Chiffaudel, Y. and Strunk, C. and Aprili, M. (2015) Quasiparticle spin resonance and coherence in superconducting aluminium. NATURE COMMUNICATIONS, 6: 8660. ISSN 2041-1723,
Full text not available from this repository. (Request a copy)Abstract
Conventional superconductors were long thought to be spin inert; however, there is now increasing interest in both (the manipulation of) the internal spin structure of the ground-state condensate, as well as recently observed long-lived, spin-polarized excitations (quasiparticles). We demonstrate spin resonance in the quasiparticle population of a mesoscopic superconductor (aluminium) using novel on-chip microwave detection techniques. The spin decoherence time obtained (similar to 100 ps), and its dependence on the sample thickness are consistent with Elliott-Yafet spin-orbit scattering as the main decoherence mechanism. The striking divergence between the spin coherence time and the previously measured spin imbalance relaxation time (similar to 10 ns) suggests that the latter is limited instead by inelastic processes. This work stakes out new ground for the nascent field of spin-based electronics with superconductors or superconducting spintronics.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRON-SPIN; CONDUCTION ELECTRONS; RELAXATION; FILMS; STATE; PARAMAGNETISM; SPINTRONICS; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Weiss > Group Christoph Strunk |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 06 Jun 2019 08:09 |
| Last Modified: | 06 Jun 2019 08:09 |
| URI: | https://pred.uni-regensburg.de/id/eprint/4668 |
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