Structural, magnetic and electrical properties of SrRuO3 films and SrRuO3/SrTiO3 superlattices

被引：40

作者：

Bern, F. ^{[1
]}

Ziese, M. ^{[1
]}

Setzer, A. ^{[1
]}

Pippel, E. ^{[2
]}

Hesse, D. ^{[2
]}

Vrejoiu, I. ^{[2
]}

机构：

[1] Univ Leipzig, Fac Phys & Geosci, Div Superconduct & Magnetism, D-04103 Leipzig, Germany

[2] Max Planck Inst Microstruct Phys, D-06120 Halle, Germany

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2013年 / 25卷 / 49期

关键词：

ELECTRONIC-STRUCTURE; TRANSPORT-PROPERTIES; PHYSICAL-PROPERTIES; CURIE-TEMPERATURE; ANISOTROPY; SUPERCONDUCTIVITY; COEXISTENCE;

D O I：

10.1088/0953-8984/25/49/496003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

SrRuO3 films and SrRuO3/SrTiO3 superlattices grown on SrTiO3(001) were studied by structural, magnetic, magnetoresistance and Hall effect measurements. The superlattices showed heteroepitaxial growth with coherent interfaces and a Ru/Ti diffusion region of 1-1.5 unit cells. The resistivity had metallic character above a critical thickness of 3-4 unit cells, becoming insulating below. There was no hint of conduction processes along the interfaces. Both magnetization and magnetoresistance measurements showed an increase of the magnetic anisotropy, consistent with magnetostriction effects. The magnetostriction coefficient was estimated as lambda(100) similar to 1.4 x 10(-4). Three unit cell thick SrRuO3 layers in SrRuO3/SrTiO3 superlattices were found to have tetragonal crystal symmetry, as deduced from the sign change of the anomalous Hall constant.

引用

页数：11

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