Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-19T12:00:39.473Z Has data issue: false hasContentIssue false

Influence of interfacial oxygen on single-crystal magnetic tunnel junctions

Published online by Cambridge University Press:  19 June 2008

F. Bonell*
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
A. M. Bataille
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
S. Andrieu
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
C. Tiusan
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
B. Kierren
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
G. Lengaigne
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
D. Lacour
Affiliation:
Laboratoire de Physique des Matériaux, BP 239, 54506 Vandoeuvre-lès-Nancy, France
Get access

Abstract

The influence of adsorbed oxygen at the first interface of single-crystal Fe(001)/MgO(001)/Fe(001) magnetic tunnel junctions is investigated. Firstly, the adsorption kinetics of O2 on the Fe(001) surface is studied in the monolayer regime by X-ray photoelectrons spectroscopy and scanning tunnelling microscopy experiments. We show that different species exist at the oxidized surface. The tunnel magneto-resistance of oxygen-doped magnetic tunnel junctions is found to decrease but remains large even for oxygen coverages exceeding one monolayer.

Keywords

Type
Research Article
Copyright
© EDP Sciences, 2008

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

Butler, W.H., Zhang, X.-G., Schulthess, T.C., MacLaren, J.M., Phys. Rev. B 63, 054416 (2001) CrossRef
Tiusan, C., Greullet, F., Hehn, M., Montaigne, F., Andrieu, S., Schuhl, A., J. Phys.: Condens. Matter 19, 165201 (2007)
Yuasa, S., Nagahama, T., Fukushima, A., Suzuki, Y., Ando, K., Nat. Mater. 3, 868 (2004) CrossRef
Guerrero, R., Herranz, D., Aliev, F.G., Greullet, F., Tiusan, C., Hehn, M., Montaigne, F., Appl. Phys. Lett. 91, 132504 (2007) CrossRef
Wunnicke, O., Papanikolaou, N., Zeller, R., Dederichs, P.H., Drchal, V., Kudrnovský, J., Phys. Rev. B 65, 064425 (2002) CrossRef
Tiusan, C., Faure-Vincent, J., Bellouard, C., Hehn, M., Jouguelet, E., Schuhl, A., Phys. Rev. Lett. 93, 106602 (2004) CrossRef
M. Sicot, S. Andrieu, C. Tiusan, F. Montaigne, F. Bertran, J. Appl. Phys. 99, 08D301 (2006)
Tiusan, C., Sicot, M., Hehn, M., Belouard, C., Andrieu, S., Montaigne, F., Schuhl, A., Appl. Phys. Lett. 88, 62512 (2006) CrossRef
Meyerheim, H.L., Popescu, R., Kirschner, J., Jedrecy, N., Sauvage-Simkin, M., Heinrich, B., Pinchaux, R., Phys. Rev. Lett. 87, 076102 (2001) CrossRef
Zhang, X.G., Butler, W.H., Bandyopadhyay, A., Phys. Rev. B 68, 092402 (2003) CrossRef
Simmons, G.W., Dwyer, D.J., Surf. Sci. 48, 373 (1975) CrossRef
Brucker, C.F., Rhodin, T.N., Surf. Sci. 57, 523 (1976) CrossRef
Legg, K.O., Jona, F., Phys. Rev. B 16, 5271 (1977) CrossRef
Brundle, C.R., Surf. Sci. 66, 581 (1977) CrossRef
Sakisaka, Y., Miyano, T., Onchi, M., Phys. Rev. B 30, 6849 (1984) CrossRef
Headrick, R.L., Konarski, P., Yalisove, S.M., Graham, W.R., Phys. Rev. B 39, 5713 (1989) CrossRef
Roosendaal, S.J., van Asselen, B., Elsenaar, J.W., Vredenberg, A.M., Habraken, F.H.P.M., Surf. Sci. 442, 329 (1999) CrossRef
Stambouli, V., Palacio, C., Mathieu, H.J., Landolt, D., Appl. Surf. Sci. 70-71, 240 (1993) CrossRef
Bisio, F., Moroni, R., Canepa, M., Mattera, L., Phys. Rev. Lett. 83, 4868 (1999) CrossRef