Spin filtering through ferromagnetic BiMnO3 tunnel barriers
arXiv:cond-mat/0504667 · doi:10.1103/PhysRevB.72.020406
Abstract
We report on experiments of spin filtering through ultra-thin single-crystal layers of the insulating and ferromagnetic oxide BiMnO3 (BMO). The spin polarization of the electrons tunneling from a gold electrode through BMO is analyzed with a counter-electrode of the half-metallic oxide La2/3Sr1/3MnO3 (LSMO). At 3 K we find a 50% change of the tunnel resistances according to whether the magnetizations of BMO and LSMO are parallel or opposite. This effect corresponds to a spin filtering effciency of up to 22%. Our results thus show the potential of complex ferromagnetic insulating oxides for spin filtering and injection.
References in corpus (7)
- Theory of electrical spin injection: Tunnel contacts as a solution of the conductivity mismatch problem
- Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments
- First Principles Investigation of Ferromagnetism and Ferroelectricity in Bismuth Manganite
- Exchange Splitting and Charge Carrier Spin Polarization in EuO
- Large magnetoresistance using hybrid spin filter devices
- Nanolithography based on real-time electrically-controlled indentation with an atomic force microscope for nanocontacts elaboration
- Spin-filter magnetoresistance in magnetic barrier junctions
Cited by in corpus (24)
- Oxide spintronics
- Electric field control of exchange bias in multiferroic epitaxial heterostructures
- Multifunctional Magnetoelectric Materials for Device Applications
- Phase transitions in multiferroic BiFeO3 crystals, thin-layers, and ceramics: Enduring potential for a single phase, room-temperature magnetoelectric 'holy grail'
- Room temperature spin filtering in epitaxial cobalt-ferrite tunnel barriers
- Origin of interface magnetism in BiMnO3/SrTiO3 and LaAlO3/SrTiO3 heterostructures
- High temperature magnetic insulating phase in ultrathin La0.67Sr0.33MnO3 films
- Nanospintronics with carbon nanotubes
- Enhanced magneto-transport at high bias in quasi-magnetic tunnel junctions with EuS spin-filter barriers
- Spin-filtering efficiency of ferrimagnetic spinels CoFe2O4 and NiFe2O4
- Filtering and analyzing mobile qubit information via Rashba-Dresselhaus-Aharonov-Bohm interferometers
- Multiferroic RMnO3 thin films
- Growth and characterization of multiferroic BiMnO thin films
- Probing the Role of the Barrier Layer in Magnetic Tunnel Junction Transport
- Growth and characterization of insulating ferromagnetic semiconductor (Al,Fe)Sb
- Andreev reflection in ferrimagnetic CoFe2O4/SrRuO3 spin filters
- Interface states in CoFe2O4 spin-filter tunnel junctions
- Real-time dynamics of spin-dependent transport through a double-quantum-dot Aharonov-Bohm interferometer with spin-orbit interaction
- Asymmetric Bias Dependence in Double Spin Filter Tunnel Junctions
- Insulating-to-Conducting Behavior and Band Profile Across the La0.9Ba0.1MnO3/Nb:SrTiO3 Epitaxial Interface
- Spin filtering effect in intrinsic 2D magnetic semiconductor Cr2Ge2Te6
- Electronic Reconstruction Enhanced Tunneling Conductance at Terrace Edges of Ultrathin Oxide Films
- Magnetic and magnetotransport properties of ThCr2Si2-type Ce2O2Bi composed of conducting Bi2- square net and magnetic Ce-O layer
- First-principles perspective on full-spectrum infrared photodetectors from doping an excitonic insulator