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- Title
Spin-singlet to triplet Cooper pair converter interface.
- Authors
Rogers, Matthew; Walton, Alistair; Flokstra, Machiel G.; Al Ma'Mari, Fatma; Stewart, Rhea; Lee, Stephen L.; Prokscha, Thomas; Caruana, Andrew J.; Kinane, Christian J.; Langridge, Sean; Bradshaw, Harry; Moorsom, Timothy; Ali, Mannan; Burnell, Gavin; Hickey, Bryan J.; Cespedes, Oscar
- Abstract
Combining magnetic and superconducting functionalities enables lower energy spin transfer and magnetic switching in quantum computing and information storage, owing to the dissipationless nature of quasi-particle mediated supercurrents. Here, we put forward a system where emergent spin-ordering and diffusion of Cooper pairs are achieved at a non-intrinsically magnetic nor superconducting metallo-molecular interface. Electron transport, magnetometry and low-energy muon spin rotation are used to probe time-reversal symmetry breaking in these structures. By comparing the Meissner expulsion in a system including a Cu/C60 spin-converter interface to one without, we observe a paramagnetic contribution that can be explained due to the conversion of spin-singlet Cooper pair states into odd-frequency triplet states. These results demonstrate the potential of metallo-molecular interfaces to achieve singlet to triplet Cooper pair conversion, a capability not present in either metal or molecule separately that could be used in the generation and controlled diffusion of spin polarised dissipationless currents. Magnetic molecules deposited on a metallic substrate constitute a method to engineer the spin properties of the molecule and has potential application in low-power information storage devices. Here, the authors investigate a superconductor/molecule/normal metal heterostructure and demonstrate spin-ordering and proximity induced superconducting properties at the metallo-molecular interface.
- Subjects
SUPERCONDUCTIVITY; QUANTUM computing; SPIN transfer torque; MEISSNER effect; SINGLE molecule magnets
- Publication
Communications Physics, 2021, Vol 4, Issue 1, p1
- ISSN
2399-3650
- Publication type
Article
- DOI
10.1038/s42005-021-00567-7