| 1. |
- Romero, G., et al.
(författare)
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Circuit quantum electrodynamics with a superconducting quantum point contact
- 2012
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Ingår i: Physical Review B - Condensed Matter and Materials Physics. - 2469-9950 .- 2469-9969. ; 85:18
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Tidskriftsartikel (refereegranskat)abstract
- We consider a superconducting quantum point contact in a circuit quantum electrodynamics setup. We study three different configurations, attainable with current technology, where a quantum point contact is coupled galvanically to a coplanar waveguide resonator. Furthermore, we demonstrate that the strong and ultrastrong coupling regimes can be achieved with realistic parameters, allowing the coherent exchange between a superconducting quantum point contact and a quantized intracavity field.
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| 2. |
- Silaev, Mihail, et al.
(författare)
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Long-Range Spin Accumulation from Heat Injection in Mesoscopic Superconductors with Zeeman Splitting
- 2015
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Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 114:16
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Tidskriftsartikel (refereegranskat)abstract
- We describe far-from-equilibrium nonlocal transport in a diffusive superconducting wire with a Zeeman splitting, taking into account different spin relaxation mechanisms. We demonstrate that due to the Zeeman splitting, an injection of current in a superconducting wire creates spin accumulation that can only relax via thermalization. This effect leads to a long-range spin accumulation detectable in the nonlocal signal. Our model gives a qualitative explanation and provides accurate fits of recent experimental results in terms of realistic parameters.
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| 3. |
- Silaev, Mihail, et al.
(författare)
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Spin Hanle effect in mesoscopic superconductors
- 2015
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Ingår i: Physical Review B. Condensed Matter and Materials Physics. - 1098-0121 .- 1550-235X. ; 91:2, s. 024506-
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Tidskriftsartikel (refereegranskat)abstract
- We present a theoretical study of spin transport in a superconducting mesoscopic spin valve under the action of a magnetic field misaligned with respect to the injected spin. We demonstrate that superconductivity can either strongly enhance or suppress the coherent spin rotation, depending on the type of spin relaxation mechanism being dominated either by spin-orbit coupling or spin-flip scattering at impurities. We also predict a subgap contribution to the nonlocal conductance in multiterminal superconducting hybrid structures which completely eliminates the effect of spin rotation at sufficiently low temperatures.
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