Interlayer magnetic coupling interactions of two ferromagnetic layers by spin polarized tunneling

被引：207

作者：

Faure-Vincent, J ^{[1
]}

Tiusan, C ^{[1
]}

Bellouard, C ^{[1
]}

Popova, E ^{[1
]}

Hehn, M ^{[1
]}

Montaigne, F ^{[1
]}

Schuhl, A ^{[1
]}

机构：

[1] Phys Mat Lab, F-54506 Vandoeuvre Les Nancy, France

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.89.107206

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Magnetic interactions involving ferromagnetic layers separated by an insulating barrier have been studied experimentally on a fully epitaxial hard-soft magnetic tunnel junction: Fe/MgO/Fe/Co. For a barrier thickness below 1 nm, a clear antiferromagnetic interaction is observed. Moreover, when reducing the MgO thickness from 1 to 0.5 nm, the coupling strength increases up to J=-0.26 erg.cm(-2). This behavior, well fitted by theoretical models, provides an unambiguous signature of the interlayer exchange coupling by spin-polarized quantum tunneling.

引用

收藏

页数：4

相关论文

共 19 条

[1] THEORY OF INTERLAYER MAGNETIC COUPLING [J].

BRUNO, P .

PHYSICAL REVIEW B, 1995, 52 (01) :411-439

[2] MECHANISM FOR NON-HEISENBERG-EXCHANGE COUPLING BETWEEN FERROMAGNETIC LAYERS [J].

ERICKSON, RP ;

HATHAWAY, KB ;

CULLEN, JR .

PHYSICAL REVIEW B, 1993, 47 (05) :2626-2635

[3]

Fert A., 1994, ULTRATHIN MAGNETIC S, V2, P82

[4] NONOSCILLATORY ANTIFERROMAGNETIC COUPLING IN SPUTTERED FE/SI SUPERLATTICES [J].

FULLERTON, EE ;

MATTSON, JE ;

LEE, SR ;

SOWERS, CH ;

HUANG, YY ;

FELCHER, G ;

BADER, SD ;

PARKER, FT .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1992, 117 (03) :L301-L306

[5] Metallic-type oscillatory interlayer exchange coupling across an epitaxial FeSi spacer -: art. no. 157202 [J].

Gareev, RR ;

Bürgler, DE ;

Buchmeier, M ;

Olligs, D ;

Schreiber, R ;

Grünberg, P .

PHYSICAL REVIEW LETTERS, 2001, 87 (15) :157202/1-157202/4

[6] LAYERED MAGNETIC-STRUCTURES - EVIDENCE FOR ANTIFERROMAGNETIC COUPLING OF FE LAYERS ACROSS CR INTERLAYERS [J].

GRUNBERG, P ;

SCHREIBER, R ;

PANG, Y ;

BRODSKY, MB ;

SOWERS, H .

PHYSICAL REVIEW LETTERS, 1986, 57 (19) :2442-2445

[7] Spin-polarized tunnel current in magnetic-layer systems and its relation to the interlayer exchange interaction [J].

Heide, C ;

Elliott, RJ ;

Wingreen, NS .

PHYSICAL REVIEW B, 1999, 59 (06) :4287-4304

[8] Growth, structure, electronic, and magnetic properties of MgO/Fe(001) bilayers and Fe/MgO/Fe(001) trilayers [J].

Klaua, M ;

Ullmann, D ;

Barthel, J ;

Wulfhekel, W ;

Kirschner, J ;

Urban, R ;

Monchesky, TL ;

Enders, A ;

Cochran, JF ;

Heinrich, B .

PHYSICAL REVIEW B, 2001, 64 (13)

[9]

MORUZZI V, 1994, CALCULATED ELECT PRO

[10]

NEEL L, 1962, CR HEBD ACAD SCI, V255, P1676