Tunnel magnetoresistance in nanojunctions based on Sr2FeMoO6

被引：91

作者：

Bibes, M

Bouzehouane, K

Barthélémy, A

Besse, M

Fusil, S

Bowen, M

Seneor, P

Carrey, J

Cros, V

Vaurès, A

Contour, JP

Fert, A

机构：

[1] Unite Mixte Phys CNRS Thales, F-91404 Orsay, France

[2] Univ Evry, F-91025 Evry, France

来源：

APPLIED PHYSICS LETTERS | 2003年 / 83卷 / 13期

关键词：

D O I：

10.1063/1.1612902

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on the observation of magnetoresistance in a Sr2FeMoO6 (SFMO)-based tunnel junction. This result is obtained by combining a three-step process for the growth of the Sr2FeMoO6 layer by pulsed laser deposition with a technology allowing the definition of nanometer-sized junctions. A clear positive magnetoresistive signal of 50% is obtained at low temperature in a Sr2FeMoO6/SrTiO3/Co junction. Since the SrTiO3/Co interface is known to have a negative spin polarization of about 20%, this result yields a negative spin polarization of SFMO, which we find to amount to more than 85% in our film. This confirms the half-metallic character of this compound, predicted by band structure calculations. (C) 2003 American Institute of Physics.

引用

页码：2629 / 2631

页数：3

共 21 条

[1] Pulsed-laser-deposited epitaxial Sr2FeMoO6-y thin films:: Positive and negative magnetoresistance regimes
Asano, H
Ogale, SB
Garrison, J
Orozco, A
Li, YH
Li, E
Smolyaninova, V
Galley, C
Downes, M
Rajeswari, M
Ramesh, R
Venkatesan, T
[J]. APPLIED PHYSICS LETTERS, 1999, 74 (24) : 3696 - 3698
[2] Cationic ordering control of magnetization in Sr2FeMoO6 double perovskite
Balcells, L
Navarro, J
Bibes, M
Roig, A
Martínez, B
Fontcuberta, J
[J]. APPLIED PHYSICS LETTERS, 2001, 78 (06) : 781 - 783
[3] BERTHET P, COMMUNICATION
[4] Characterization methods of epitaxial Sr2FeMoO6 thin films
Besse, M
Pailloux, F
Barthélémy, A
Bouzehounane, K
Fert, A
Olivier, J
Durand, O
Wyczisk, F
Bisaro, R
Contour, JP
[J]. JOURNAL OF CRYSTAL GROWTH, 2002, 241 (04) : 448 - 454
[5] Experimental evidence of the ferrimagnetic ground state of Sr2FeMoO6 probed by X-ray magnetic circular dichroism
Besse, M
Cros, V
Barthélémy, A
Jaffrès, H
Vogel, J
Petroff, F
Mirone, A
Tagliaferri, A
Bencok, P
Decorse, P
Berthet, P
Szotek, Z
Temmerman, WM
Dhesi, SS
Brookes, NB
Rogalev, A
Fert, A
[J]. EUROPHYSICS LETTERS, 2002, 60 (04): : 608 - 614
[6] BORGES RP, P INT C THIN FILM DE
[7] Nearly total spin polarization in La2/3Sr1/3MnO3 from tunneling experiments
Bowen, M
Bibes, M
Barthélémy, A
Contour, JP
Anane, A
Lemaitre, Y
Fert, A
[J]. APPLIED PHYSICS LETTERS, 2003, 82 (02) : 233 - 235
[8] CONTOUR JP, UNPUB
[9] Role of metal-oxide interface in determining the spin polarization of magnetic tunnel junctions
De Teresa, JM
Barthélémy, A
Fert, A
Contour, JP
Montaigne, F
Seneor, P
[J]. SCIENCE, 1999, 286 (5439) : 507 - 509
[10] Imaging the local electrical properties of metal surfaces by atomic force microscopy with conducting probes
Houze, F
Meyer, R
Schneegans, O
Boyer, L
[J]. APPLIED PHYSICS LETTERS, 1996, 69 (13) : 1975 - 1977

← 1 2 3 →