Role of noncollinearity of Cr magnetic moment distribution in Fe/Cr superlattices

被引：2

作者：

Yartseva, Nadezhda Sergeevna ^{[1
]}

Yartsev, Sergey Vladimirovich ^{[2
]}

Parlebas, Jean-Claude ^{[3
]}

Demangeat, Claude ^{[4
]}

机构：

[1] RAS, UD, Inst Met Phys, Ekaterinburg 620990, Russia

[2] ZAO NPO Spektr, Berezovskiy 623700, Russia

[3] UMR 7504 CNRS UDS, IPCMS, F-67034 Strasbourg 2, France

[4] Univ Strasbourg, UFR Phys & Ingn, F-67000 Strasbourg, France

来源：

EUROPEAN PHYSICAL JOURNAL B | 2013年 / 86卷 / 04期

关键词：

SPIN-DENSITY WAVES; FILMS; REORIENTATION;

D O I：

10.1140/epjb/e2013-30961-2

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Formation of noncollinear distribution of the magnetic moments in Fe/Cr(001) and Fe/Cr(110) superlattices with ferromagnetic coupling of the Fe slabs having abrupt interfaces are considered in noncollinear Anderson model approach. Self-consistent calculations for variable Cr spacer thickness from 1 to 9 monolayers are carried out using a total-energy minimization for arbitrary orientations of the Fe and Cr magnetic moments in a given plane. It is found that the Fe/Cr(001) superlattices with Cr spacer from 6 to 9 monolayers decrease their total energy for a quasi-helicoidal distribution of the magnetic moments which consists in two interleaved spirals. Magnetic moments distribution in the Fe/Cr(110) superlattices decrease their total energy for noncollinear ordering in the Cr spacer with number of monolayers from 5 to 9. The moments of atoms at the interfacial Cr layers are canted to each other with the values reduced to 0.15-0.17 mu(B), whereas the Cr moments in the intermediate monolayers drastically reduce their values to 0.04-0.06 mu(B) having an opposite orientation of the moments with a polarization plane perpendicular to the Fe slabs.

引用

页数：7

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