Anisotropic magnetoresistance of thin La0.7Ca0.3MnO3 films

被引：89

作者：

Ziese, M ^{[1
]}

Sena, SP ^{[1
]}

机构：

[1] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1998年 / 10卷 / 12期

关键词：

D O I：

10.1088/0953-8984/10/12/012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The low-field magnetoresistance of La0.7Ca0.3MnO3 films deposited on different substrates has been measured. Whereas post-annealed films on SrTiO3 and LaAlO3 exhibit a clear anisotropic magnetoresistance (AMR), the low-field magnetoresistance of as-deposited films on LaAlO3 and Si is dominated by grain-boundary magnetoresistance. At low temperatures the anisotropic magnetoresistance is temperature independent with a value of about -0.2 +/- 0.1%. A simple atomic d-state model can explain the sign of the anisotropic magnetoresistance.

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页码：2727 / 2737

页数：11

相关论文

共 19 条

[1] SPONTANEOUS RESISTIVITY ANISOTROPY IN NI-BASED ALLOYS [J].

CAMPBELL, IA ;

FERT, A ;

JAOUL, O .

JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS, 1970, 3 (01) :S95-&

[2]

COEY JMB, 1998, IN PRESS ADV PHYS

[3] EFFECTS OF DOUBLE EXCHANGE IN MAGNETIC CRYSTALS [J].

DEGENNES, PG .

PHYSICAL REVIEW, 1960, 118 (01) :141-154

[4] Anisotropic magnetoresistance in tetragonal La1-xCaxMnO delta thin films [J].

Eckstein, JN ;

Bozovic, I ;

ODonnell, J ;

Onellion, M ;

Rzchowski, MS .

APPLIED PHYSICS LETTERS, 1996, 69 (09) :1312-1314

[5]

GIBBS MRJ, 1998, IN PRESS PHIL T R SO

[6] Grain-boundary effects on the magnetoresistance properties of perovskite manganite films [J].

Gupta, A ;

Gong, GQ ;

Xiao, G ;

Duncombe, PR ;

Lecoeur, P ;

Trouilloud, P ;

Wang, YY ;

Dravid, VP ;

Sun, JZ .

PHYSICAL REVIEW B, 1996, 54 (22) :15629-15632

[7] Spin-polarized intergrain tunneling in La-2/Sr-3(1)/3MnO3 [J].

Hwang, HY ;

Cheong, SW ;

Ong, NP ;

Batlogg, B .

PHYSICAL REVIEW LETTERS, 1996, 77 (10) :2041-2044

[8] SPONTANEOUS RESISTIVITY ANISOTROPY IN NI-ALLOYS [J].

JAOUL, O ;

CAMPBELL, IA ;

FERT, A .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1977, 5 (01) :23-34

[9] Low-field magnetoresistive properties of polycrystalline and epitaxial perovskite manganite films [J].

Li, XW ;

Gupta, A ;

Xiao, G ;

Gong, GQ .

APPLIED PHYSICS LETTERS, 1997, 71 (08) :1124-1126

[10] ANISOTROPIC MAGNETORESISTANCE WITH CUBIC ANISOTROPY AND WEAK FERROMAGNETISM - A NEW PARADIGM [J].

MALOZEMOFF, AP .

PHYSICAL REVIEW B, 1986, 34 (03) :1853-1863