Hostname: page-component-78c5997874-fbnjt Total loading time: 0 Render date: 2024-11-17T17:19:14.705Z Has data issue: false hasContentIssue false
  • English
  • Français

Atomic-scale analysis of interfaces in an all-oxide magnetic tunnel junction

Published online by Cambridge University Press:  03 October 2003

J.-L. Maurice ,
F. Pailloux ,
D. Imhoff ,
N. Bonnet ,
L. Samet ,
A. Barthélémy ,
J.-P. Contour ,
C. Colliex  and
A. Fert
J.-L. Maurice*
Affiliation:
Unité Mixte de Physique CNRS/Thales, 91404 Orsay, France
F. Pailloux
Affiliation:
Unité Mixte de Physique CNRS/Thales, 91404 Orsay, France
D. Imhoff
Affiliation:
Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, France
N. Bonnet
Affiliation:
UMR-S INSERM 514 and LERI, University of Reims, 51092 Reims Cedex, France
L. Samet
Affiliation:
Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, France
A. Barthélémy
Affiliation:
Unité Mixte de Physique CNRS/Thales, 91404 Orsay, France
J.-P. Contour
Affiliation:
Unité Mixte de Physique CNRS/Thales, 91404 Orsay, France
C. Colliex
Affiliation:
Laboratoire de Physique des Solides, Université Paris-Sud, 91405 Orsay, France
A. Fert
Affiliation:
Unité Mixte de Physique CNRS/Thales, 91404 Orsay, France
*
[email protected]
Get access

Abstract

We use High Resolution Electron Microscopy (HRTEM)together with Electron Energy Loss Spectroscopy (EELS) to analyzethe crystallography and the chemical configuration of interfacesin a state-of-the-artLa2/3Sr1/3MnO3/SrTiO3/La2/3Sr1/3MnO3tunnel junction. EELS indicates that manganese ions keep theirbulk valency up to the last atomic plane in contact with theinsulator. Tunnel magnetoresistance however decreases withtemperature faster than magnetisation in these samples.Quantitative HRTEM reveals some local departures from chemicalabruptness at the interfaces, which could play a role in thisdecrease.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 24 , Issue 3 , December 2003 , pp. 215 - 221
Copyright
© EDP Sciences, 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Lu, Y., Li, X.W., Gong, G.Q., Xiao, G., Guptaz, A., Lecoeur, P., Sun, J.Z., Wang, Y.Y., Dravid, V.P., Phys. Rev. B 54, 8357 (1996) CrossRef
Viret, M., Drouet, M., Contour, J.-P., Nassar, J., Fermon, C., Fert, A., Europhys. Lett. 39, 545 (1997)
Bowen, M., Bibes, M., Barthélémy, A., Contour, J.-P., Anane, A., Lemaître, Y., Fert, A., Appl. Phys. Lett. 82, 233 (2003) CrossRef
De Teresa, J.-M., Barthélémy, A., Fert, A., Contour, J.-P., Lyonnet, R., Montaigne, F., Seneor, P., Vaures, A., Phys. Rev. Lett. 82, 4288 (1999); Science 286, 507 (1999) CrossRef
Fert, A. et al., Mater. Sci. Eng. B 84, 1 (2001) CrossRef
Dulli, H., Dowben, P.A., Liou, S.-H., Plummer, E.W., Phys. Rev. B 62, R14629 (2000) CrossRef
Bertacco, R., Contour, J.-P., Barthélémy, A., Olivier, J., Surf. Sci. 511, 366 (2002) CrossRef
Hubler, G.K., MRS Bull. 17, 26 (1992) CrossRef
Contour, J.P., Sant, C., Ravelosona, D., Ficher, B., Patlagan, L., Jpn J. Appl. Phys. 32, 1134 (1993) CrossRef
Maurice, J.-L., Pailloux, F., Barthélémy, A., Rocher, A., Durand, O., Lyonnet, R., Contour, J.-P., Appl. Surf. Sci. 188, 176 (2002) CrossRef
J.-L. Maurice, F. Pailloux, A. Barthélémy, O. Durand, D. Imhoff, R. Lyonnet, A. Rocher, J.-P. Contour, Philos. Mag. (to be published)
Gommert, E., Cerva, H., Rucki, A., R.v. Helmolt, J. Wecker, C. Kuhrt, K. Samwer, J. Appl. Phys. 81, 5496 (1997) CrossRef
Lebedev, O.I., Van Tendeloo, G., Amelincks, S., Leibold, B., Habermeier, H.U., Phys. Rev. B 58, 80065 (1998) CrossRef
Bobo, J.F., Magnoux, D., Poers, R., Racquet, B., Ousset, J.C., Fert, A.R., Roucau, C., Baulès, P., Casanove, M.J., Snoeck, E., J. Appl. Phys. 87, 6773 (2000) CrossRef
Haghiri-Gosnet, A.-M., Wolfman, J., Mercey, B., Simon, Ch., Lecoeur, P., Korzenski, M., Hervieu, M., Desfeux, R., Baldinozzi, G., J. Appl. Phys. 88, 4257 (2000) CrossRef
Benedict, J., Anderson, R., Klepeis, S., Chaker, M., Mater. Res. Soc. Symp. Proc. 199, 189 (1990) CrossRef
Stadelmann, P., Ultramicroscopy 21, 131 (1987) CrossRef
Pailloux, F., Imhoff, D., Sikora, T., Barthélémy, A., Maurice, J.-L., Contour, J.-P., Colliex, C., Fert, A., Phys. Rev. B 66, 014417 (2002) CrossRef
Hammouche, A., Siebert, E., Hammou, A., Mater. Res. Bull. 24, 367 (1989) CrossRef
Ourmazd, A., Baumann, F.H., Bode, M., Kim, Y., Ultramicroscopy 34, 237 (1990) CrossRef
Maurice, J.-L., Lyonnet, R., Contour, J.P., J. Magn. Magn. Mater. 211, 91 (2000) CrossRef
Bonnet, N., J. Microsc. 190, 2 (1998) CrossRef
Rouvière, J.-L., Bonnet, N., Inst. Phys. Conf. Ser. 134, 11 (1993)
J.-L. Maurice, N. Bonnet, F. Pailloux, 4th Conf. of the French Society of Microscopy (SFµ), Toulouse, Sept. 2000
Maurice, J.-L., Schwander, P., Baumann, F.H., Ourmazd, A., Ultramicroscopy 68, 149 (1997) CrossRef
Jeanguillaume, C., Colliex, C., Ultramicroscopy 28, 252 (1989) CrossRef
Bonnet, N., Brun, N., Colliex, C., Ultramicroscopy 77, 97 (1999) CrossRef
Trebbia, P., Bonnet, N., Ultramicroscopy 34, 165 (1990) CrossRef
Samet, L., Imhoff, D., Maurice, J.-L., Contour, J.-P., Gloter, A., Manoubi, T., Fert, A., Colliex, C., Eur. Phys. J. B 34, 179 (2003) CrossRef
See, e.g., the review by Coey, J.M.D., Viret, M., von Molnár, S., Adv. Phys. 48, 167 (1999) CrossRef
Maurice, J.-L., Pailloux, F., Imhoff, D., Contour, J.-P., Barthélémy, A., Bowen, M., Colliex, C., Fert, A., MRS Proc. 746, 145 (2003)
Julière, M., Phys. Lett. A 54, 225 (1975) CrossRef
Calderón, M.J., Brey, L., Guinea, F., Phys. Rev. B 60, 6698 (1999) CrossRef
A. Khodan (private communication)