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Inverse Magnetoresistance In Manganite/SrTiO3/Co Tunnel Junctions

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Abstract

In La0.7Sr0.3MnO3/SrTiO3/Co tunnel junctions, the half-metallic nature of La0.7Sr0.3MnO3 allows probing the spin polarization of Co. For applied voltage bias around zero volts, an inverse tunnel magnetoresistance is found, indicating the negative spin polarization of Co at the Fermi level as expected from the density of states of the “d” band in Co. The bias dependence of the magnetoresistance reflects the structure of the “d” band density of states of Co. In this article we underline the important consequences for the knowledge of the spin-dependent tunneling in solids brought by these results and describe in detail the effect of temperature and high magnetic field on the magnetoresistance.

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References

  1. P.M. Tedrow and R. Meservey, Phys. Rev. Lett. 26, 192 (1971

    Article  CAS  Google Scholar 

  2. G. Prinz, Phys. Today 48, 58 (1995

    Article  CAS  Google Scholar 

  3. J.S. Moodera et al., Phys. Rev. Lett. 74, 3273 (1995

    Article  CAS  Google Scholar 

  4. M. Julliére, Phys. Lett. 54A, 225 (1975

    Article  Google Scholar 

  5. J.H. Park et al., Nature 392, 794 (1998

    Article  CAS  Google Scholar 

  6. K. Wang, PhD thesis, New York 1999 and P.M. Levy, private communication

  7. E. Yu Tsymbal and D.G. Pettifor, J. Phys.: Condens. Matter 9, L411 (1997

    CAS  Google Scholar 

  8. K. Wang et al., J. Magn. Magn. Mater. 189, 1 (1998)

    Article  Google Scholar 

  9. Yu Lu et al., Phys. Rev. B54 (1996 R8357

    Article  Google Scholar 

  10. X.W. Li et al., J. Appl. Phys. 81, 5509 (1997)

    Article  CAS  Google Scholar 

  11. J. Nassar et al., Mater. Res. Soc. Proc. 494, 231 (1998

    Article  CAS  Google Scholar 

Download references

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Authors and Affiliations

  1. UMR de Physique CNRS-Thomson CSF, LCR, Domaine de Corbeville, 91404, Orsay cedex, France

    J. M. De Teresa, A. Barthélémy, J. P. Contour, A. Fert, R. Lyonnet, F. Montaigne, A. Vaurès & P. Seneor

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  1. J. M. De Teresa
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  2. A. Barthélémy
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  3. J. P. Contour
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  4. A. Fert
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  5. R. Lyonnet
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  6. F. Montaigne
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  7. A. Vaurès
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  8. P. Seneor
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De Teresa, J.M., Barthélémy, A., Contour, J.P. et al. Inverse Magnetoresistance In Manganite/SrTiO3/Co Tunnel Junctions. MRS Online Proceedings Library 574, 293–298 (1999). https://doi.org/10.1557/PROC-574-293

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  • DOI: https://doi.org/10.1557/PROC-574-293

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