Ferroelectric Control of Interface Spin Filtering in Multiferroic Tunnel Junctions
- Univ. Complutense Madrid (Spain)
- Hemholtz-Zentrum Berlin für Materialen und Energie, Berlin (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Univ. of Paris-Saclay, Palaiseau (France)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Hemholtz-Zentrum Berlin für Materialen und Energie, Berlin (Germany); Ruhr Univ., Bochum (Germany)
- Hemholtz-Zentrum Berlin für Materialen und Energie, Berlin (Germany); Univ. of Regensburg (Germany)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Inst. de Ciencia de Materiales de Madrid (Spain); Universidad Complutense de Madrid (Spain)
- Science and Technology Facilities Council (STFC), Oxford (United Kingdom). Rutherford Appleton Lab. (RAL)
- Univ. Complutense Madrid (Spain); Unidad Asociada UCM/CSIC, Madrid (Spain)
The electronic reconstruction occurring at oxide interfaces may be the source of interesting device concepts for future oxide electronics. Among oxide devices, multiferroic tunnel junctions are being actively investigated as they offer the possibility to modulate the junction current by independently controlling the switching of the magnetization of the electrodes and of the ferroelectric polarization of the barrier. In this Letter, we show that the spin reconstruction at the interfaces of a La0.7Sr0.3MnO3/BaTiO3/La0.7Sr0.3MnO3 multiferroic tunnel junction is the origin of a spin filtering functionality that can be turned on and off by reversing the ferroelectric polarization. The ferroelectrically controlled interface spin filter enables a giant electrical modulation of the tunneling magnetoresistance between values of 10% and 1000%, which could inspire device concepts in oxides-based low dissipation spintronics.
- Research Organization:
- Argonne National Lab. (ANL), Argonne, IL (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- AC02-06CH11357; AC05-00OR22725
- OSTI ID:
- 1493725
- Alternate ID(s):
- OSTI ID: 1491619; OSTI ID: 1558466
- Journal Information:
- Physical Review Letters, Vol. 122, Issue 3; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Ferroelectric Tunnel Junctions: Modulations on the Potential Barrier
|
journal | October 2019 |
Ferroelectric properties of BaTiO 3 thin films co-doped with Mn and Nb
|
journal | September 2019 |
Designing functional ferroelectric interfaces from first-principles: dipoles and band bending at oxide heterojunctions
|
journal | November 2019 |
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