Spin-singlet to triplet Cooper pair converter interface
| Autor: | M. Rogers, Rhea Stewart, T. Prokscha, Stephen Lee, Oscar Cespedes, Fatma Al Ma’Mari, Christian J. Kinane, Mannan Ali, B. J. Hickey, Andrew J. Caruana, Sean Langridge, Alistair Walton, Harry Bradshaw, Timothy Moorsom, Gavin Burnell, M. G. Flokstra |
|---|---|
| Přispěvatelé: | University of St Andrews. School of Physics and Astronomy, University of St Andrews. Centre for Designer Quantum Materials, University of St Andrews. Condensed Matter Physics, Rogers, M [0000-0002-4550-2392], Prokscha, T [0000-0002-7643-4695], Caruana, AJ [0000-0003-0715-5876], Langridge, S [0000-0003-1104-0772], Bradshaw, H [0000-0002-7566-8641], Burnell, G [0000-0002-9486-0639], Cespedes, O [0000-0002-5249-9523], Apollo - University of Cambridge Repository |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
QC1-999
TK General Physics and Astronomy 02 engineering and technology Astrophysics 01 natural sciences TK Electrical engineering. Electronics Nuclear engineering Paramagnetism 4009 Electronics Sensors and Digital Hardware 0103 physical sciences Symmetry breaking Singlet state 010306 general physics QC Spin-½ 40 Engineering Physics Superconductivity Condensed matter physics Heterojunction DAS Muon spin spectroscopy 021001 nanoscience & nanotechnology 5104 Condensed Matter Physics QB460-466 QC Physics Condensed Matter::Strongly Correlated Electrons Cooper pair 0210 nano-technology 51 Physical Sciences |
| Zdroj: | Communications Physics, Vol 4, Iss 1, Pp 1-9 (2021) |
| ISSN: | 2399-3650 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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