Nonuniversality of artificial frustrated spin systems

被引：38

作者：

Chioar, I. A. ^{[1
,2
]}

Rougemaille, N. ^{[1
,2
]}

Grimm, A. ^{[1
,2
]}

Fruchart, O. ^{[1
,2
]}

Wagner, E. ^{[1
,2
]}

Hehn, M. ^{[3
]}

Lacour, D. ^{[3
]}

Montaigne, F. ^{[3
]}

Canals, B. ^{[1
,2
]}

机构：

[1] CNRS, Inst NEEL, F-38042 Grenoble, France

[2] Univ Grenoble Alpes, Inst NEEL, F-38042 Grenoble, France

[3] Univ Lorraine, Inst Jean Lamour, CNRS, F-54506 Vandoeuvre Les Nancy, France

来源：

PHYSICAL REVIEW B | 2014年 / 90卷 / 06期

关键词：

ICE;

D O I：

10.1103/PhysRevB.90.064411

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Magnetic frustration effects in artificial kagome arrays of nanomagnets with out-of-plane magnetization are investigated using magnetic force microscopy and Monte Carlo simulations. Experimental and theoretical results are compared to those found for the artificial kagome spin ice in which the nanomagnets have in-plane magnetization. In contrast with what has been recently reported, we demonstrate that long-range (i.e., beyond nearest-neighbor) dipolar interactions between the nanomagnets cannot be neglected when describing the magnetic configurations observed after demagnetizing the arrays using a field protocol. As a consequence, there are clear limits to any universality in the behavior of these two artificial frustrated spin systems. We provide arguments to explain why these two systems show striking similarities at first sight in the development of pairwise spin correlations.

引用

页数：6

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