Tunneling phenomena as a probe to investigate atomic scale fluctuations in metal/oxide/metal magnetic tunnel junctions

被引：54

作者：

Da Costa, V

Tiusan, C

Dimopoulos, T

Ounadjela, K

机构：

[1] CNRS, UMR 7604, Inst Phys & Chim Mat Strasbourg, F-67037 Strasbourg, France

[2] Univ Strasbourg 1, F-67037 Strasbourg, France

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.85.876

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Local transport properties of Al2O3 tunnel barriers have been investigated at a nanometric spatial scale with an unconventional near field microscope. Using the tunneling effect, which is extremely sensitive to fluctuations of the barrier parameters (less than 1 to 2 Angstrom), a unique method is introduced to investigate the tunnel barrier quality. This technique provides atomic scale information on the barrier characteristics which cannot be obtained by conventional surface analysis techniques since they are all subject to averaging over surface and depth.

引用

收藏

页码：876 / 879

页数：4

相关论文

共 12 条

[1] Rare events in quantum tunneling [J].

Bardou, F .

EUROPHYSICS LETTERS, 1997, 39 (03) :239-244

[2] Experimental evidence and consequences of rare events in quantum tunneling [J].

Da Costa V. ;

Henry Y. ;

Bardou F. ;

Romeo M. ;

Ounadjela K. .

The European Physical Journal B - Condensed Matter and Complex Systems, 2000, Springer-Verlag New York Inc. (13) :297-303

[3] Nanometric cartography of tunnel current in metal-oxide junctions [J].

Da Costa, V ;

Bardou, F ;

Béal, C ;

Henry, Y ;

Bucher, JP ;

Ounadjela, K .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :6703-6705

[4] Imaging the local electrical properties of metal surfaces by atomic force microscopy with conducting probes [J].

Houze, F ;

Meyer, R ;

Schneegans, O ;

Boyer, L .

APPLIED PHYSICS LETTERS, 1996, 69 (13) :1975-1977

[5] Characterization of tips for conducting atomic force microscopy in ultrahigh vacuum [J].

Lantz, MA ;

O'Shea, SJ ;

Welland, ME .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1998, 69 (04) :1757-1764

[6] GIANT MAGNETIC TUNNELING EFFECT IN FE/AL2O3/FE JUNCTION [J].

MIYAZAKI, T ;

TEZUKA, N .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1995, 139 (03) :L231-L234

[7] Optimum tunnel barrier in ferromagnetic-insulator-ferromagnetic tunneling structures [J].

Moodera, JS ;

Gallagher, EF ;

Robinson, K ;

Nowak, J .

APPLIED PHYSICS LETTERS, 1997, 70 (22) :3050-3052

[8] LARGE MAGNETORESISTANCE AT ROOM-TEMPERATURE IN FERROMAGNETIC THIN-FILM TUNNEL-JUNCTIONS [J].

MOODERA, JS ;

KINDER, LR ;

WONG, TM ;

MESERVEY, R .

PHYSICAL REVIEW LETTERS, 1995, 74 (16) :3273-3276

[9] Dielectric breakdown of ferromagnetic tunnel junctions [J].

Oepts, W ;

Verhagen, HJ ;

de Jonge, WJM ;

Coehoorn, R .

APPLIED PHYSICS LETTERS, 1998, 73 (16) :2363-2365

[10] Artificial antiferromagnetic tunnel junction sensors based on Co/Ru/Co sandwiches [J].

Tiusan, C ;

Hehn, M ;

Ounadjela, K ;

Henry, Y ;

Hommet, J ;

Meny, C ;

van den Berg, H ;

Baer, L ;

Kinder, R .

JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :5276-5278