Observation of the Triplet Spin-Valve Effect in a Superconductor-Ferromagnet Heterostructure
arXiv:1206.2045 · doi:10.1103/PhysRevB.87.144507
Abstract
The theory of superconductor-ferromagnet (S-F) heterostructures with two ferromagnetic layers predicts the generation of a long-range, odd-in-frequency triplet pairing at non-collinear alignment (NCA) of the magnetizations of the F-layers. This triplet pairing has been detected in a Nb/Cu41Ni59/nc-Nb/Co/CoOx spin-valve type proximity effect heterostructure, in which a very thin Nb film between the F-layers serves as a normal conducting (nc) spacer. The resistance of the sample as a function of an external magnetic field shows that for not too high fields the system is superconducting at a collinear alignment of the Cu41Ni59 and Co layer magnetic moments, but switches to the normal conducting state at a NCA configuration. This indicates that the superconducting transition temperature Tc for NCA is lower than the fixed measuring temperature. The existence of a minimum Tc, at the NCA regime below that one for parallel or antiparallel alignments of the F-layer magnetic moments, is consistent with the theoretical prediction of a singlet superconductivity suppression by the long-range triplet pairing generation.
7 pages, 4 fgures, Submitted to Physical Review Letters
References in corpus (9)
- A spin triplet supercurrent through the half-metallic ferromagnet CrO2
- Superconducting triplet spin valve
- Triplet proximity effect in FSF trilayers
- Switching superconductivity in S/F bilayers by multiple-domain structures
- Domain wall effects in ferromagnet-superconductor structures
- Synergy of exchange bias with superconductivity in ferromagnetic-superconducting layered hybrids: the influence of in-plane and out-of-plane magnetic order on superconductivity
- Critical Temperature Oscillations and Reentrant Superconductivity due to the FFLO like State in F/S/F Trilayers
- Interplay between superconductivity and ferromagnetism in epitaxial Nb(110)/Au(111)/Co(0001) trilayers
- Domain - wall - induced magnetoresistance in pseudo spin-valve/superconductor hybrid structures
Cited by in corpus (20)
- Controlled suppression of superconductivity by the generation of polarized Cooper pairs in spin valve structures
- Supercurrent Diode Effect, Spin Torques, and Robust Zero-Energy Peak in Planar Half-Metallic Trilayers
- Angular dependence of superconductivity in superconductor / spin valve heterostructures
- Proximity Induced Vortices and Long-Range Triplet Supercurrents in Ferromagnetic Josephson Junctions and Spin Valves
- Superconducting spin-valve effect in heterostructures with ferromagnetic Heusler alloy layers
- Tunneling Conductance and Spin Transport in Clean Ferromagnet-Ferromagnet-Superconductor Heterostructures
- Spin-triplet supercurrent in Josephson junctions containing a synthetic antiferromagnet with perpendicular magnetic anisotropy
- Transport in Ferromagnet/Superconductor spin valves
- Long-range proximity effect in Nb-based heterostructures induced by a magnetically inhomogeneous permalloy layer
- Modelling the processes of atom structure formation of a superconducting spin valve
- Chirality of Bloch domain walls in exchange biased CoO/Co bilayer seen by waveguide-enhanced neutron spin-flip scattering
- Odd-frequency pairs and anomalous proximity effect in nematic and chiral states of superconducting topological insulators
- In situ transport characterization of magnetic states in Nb/Co superconductor/ferromagnet heterostructures
- Electrical control of superconducting spin valves using ferromagnetic helices
- Spin-flipping with Holmium: Case study of proximity effect in superconductor/ferromagnet/superconductor heterostructures
- Proximity Induced Non-collinear Magnetic States in Planar Superconductor/Ferromagnet Hybrids
- Gate-Tunable Superconducting Spin Valve in a van der Waals Ferromagnet/Superconductor/Ferromagnet Trilayer
- Hybrid collective excitations in topological superconductor/ferromagnetic insulator heterostructures
- Pseudo spin-valve switch based on ferromagnet/superconductor/ferromagnet trilayer microbridge
- Perspectives on Magnetic/Superconductor Hybrid Systems: Long-range Electromagnetic Phenomena Induced by Proximity Effect and Interfacial Spin-orbit Coupling