Spin-Resolved Tunneling Studies of the Exchange Field in EuS/Al Bilayers
arXiv:1105.3759 · doi:10.1103/PhysRevLett.106.247001
Abstract
We use spin-resolved electron tunneling to study the exchange field in the Al component of EuS/Al bilayers, in both the superconducting and normal-state phases of the Al. Contrary to expectation, we show that the exchange field, Hex, is a non-linear function of applied field, even in applied fields that are well beyond the EuS coercive field. Furthermore the magnitude Hex is unaffected by the superconducting phase. In addition, Hex decreases significantly with increasing temperature in the temperature range of 0.1-1 K. We discuss these results in the context of recent theories of generalized spin-dependent boundary conditions at a superconductor/ferromagnet interface.
arXiv comment4+ pages, 5 figures, to appear in Phys. Rev. Lett
References in corpus (9)
- Long-range effects in superconductor-ferromagnet structures
- Spin-dependent boundary conditions for isotropic superconducting Green's functions
- Superconducting proximity effect in a diffusive ferromagnet with spin-active interfaces
- Spectroscopy and critical temperature of diffusive superconducting/ferromagnetic hybrid structures with spin-active interfaces
- Fermi-liquid effects in the gapless state of marginally thin superconducting films
- Nonequilibrium spin-dependent phenomena in mesoscopic superconductor-normal metal tunnel structures
- Tenfold Magnetoconductance in a Non-Magnetic Metal Film
- Pairing resonance as a normal-state spin probe in ultra-thin Al films
- Measurement of Conduction Electron Polarization Via the Pairing Resonance
Cited by in corpus (35)
- Colloquium: Nonequilibrium effects in superconductors with a spin-splitting field
- Huge thermoelectric effects in ferromagnet-superconductor junctions in the presence of a spin-splitting field
- Zero-field Topological Superconductivity in Ferromagnetic Hybrid Nanowires
- Thermal, electric and spin transport in superconductor/ferromagnetic-insulator structures
- Revealing the magnetic proximity effect in EuS/Al bilayers through superconducting tunneling spectroscopy
- Ferromagnetic insulator-based superconducting junctions as sensitive electron thermometers
- Magnetic Proximity-Induced Superconducting Diode Effect and Infinite Magnetoresistance in van der Waals Heterostructure
- Field-free anomalous junction and superconducting diode effect in spin split superconductor/topological insulator junctions
- Thermoelectric effects in superconductor-ferromagnet tunnel junctions on europium sulfide
- Spin-polarized quasiparticle transport in exchange-split superconducting aluminum on europium sulfide
- Very large thermophase in ferromagnetic Josephson junctions
- Coexistence of superconductivity and spin-splitting fields in superconductor/ferromagnetic insulator bilayers of arbitrary thickness
- Inducing odd-frequency triplet superconducting correlations in a normal metal
- Superconductivity near a magnetic domain wall
- Dependence of the electronic structure of the EuS/InAs interface on the bonding configuration
- Superconductor-ferromagnet hybrids for non-reciprocal electronics and detectors
- Magnetic exchange fields and domain wall superconductivity at an all-oxide superconductor / ferromagnet insulator interface
- Very large thermal rectification in ferromagnetic insulator-based superconducting tunnel junctions
- Mystery of Excess Low Energy States in a Disordered Superconductor in a Zeeman Field
- Flux flow spin Hall effect in type-II superconductors with spin-splitting field
- Electron refrigeration in hybrid structures with spin-split superconductors
- Zeeman-limited Superconductivity in Crystalline Al Films
- Current rectification in junctions with spin-split superconductors
- Spintromechanics of a Magnetic Nanoshuttle
- Spin-flip Enhanced Thermoelectricity in Superconductor-Ferromagnet Bilayers
- Manifestation of a spin-splitting field in a thermally-biased Josephson junction
- Spin-polarized multiple Andreev reflections in spin-split superconductors
- Magnetoelectric effects in superconductor/ferromagnet bilayers
- Phase-Controllable Nonlocal Spin Polarization in Proximitized Nanowires
- Mesoscopic Josephson junctions with switchable current-phase relation
- Clocked single-spin source based on a spin-split superconductor
- Exchange Field-Mediated Magnetoresistance in the Correlated Insulator Phase of Be Films
- Thermalization of hot electrons via interfacial electron-magnon interaction
- Atomic-scale tailoring of spin susceptibility via non-magnetic spin-orbit impurities
- Percolative supercurrent in superconductor-ferromagnetic insulator bilayers