Surface Nanostructures in Manganite Films

被引：11

作者：

Gambardella, A. ^{[1
]}

Graziosi, P. ^{[1
]}

Bergenti, I. ^{[1
]}

Prezioso, M. ^{[2
]}

Pullini, D. ^{[3
]}

Milita, S. ^{[4
]}

Biscarini, F. ^{[5
]}

Dediu, V. A. ^{[1
]}

机构：

[1] CNR, ISMN, I-40129 Bologna, Italy

[2] Univ Calif Santa Barbara, Dept Elect & Comp Engn, Santa Barbara, CA 93106 USA

[3] Ctr Ric FIAT, I-10043 Orbassano, Italy

[4] CNR, Ist Studio Mat Magnetici, IMM, I-40129 Bologna, Italy

[5] Univ Modena & Reggio Emilia, Dipartimento Sci Vita, I-41100 Modena, Italy

来源：

SCIENTIFIC REPORTS | 2014年 / 4卷

关键词：

LA0.7SR0.3MNO3; THIN-FILMS; MOTION;

D O I：

10.1038/srep05353

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Ultrathin manganite films are widely used as active electrodes in organic spintronic devices. In this study, a scanning tunnelling microscopy (STM) investigation with atomic resolution revealed previously unknown surface features consisting of small non-stoichiometric islands. Based upon this evidence, a new mechanism for the growth of these complex materials is proposed. It is suggested that the non-stoichiometric islands result from nucleation centres that are below the critical threshold size required for stoichiometric crystalline growth. These islands represent a kinetic intermediate of single-layer growth regardless of the film thickness, and should be considered and possibly controlled in manganite thin-film applications.

引用

页数：5

共 30 条

[1] Intrinsic inhomogeneities in manganite thin films investigated with scanning tunneling spectroscopy [J].