Magnetic properties of the Cr(001) surface studied by spin-polarized scanning tunneling spectroscopy

被引：22

作者：

Kleiber, M

Bode, M

Ravlic, R

Tezuka, N

Wiesendanger, R

机构：

[1] Univ Hamburg, Inst Appl Phys, D-20355 Hamburg, Germany

[2] Univ Hamburg, Microstruct Res Ctr, D-20355 Hamburg, Germany

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 240卷 / 1-3期

关键词：

micromagnetic structures; surface magnetism; antiferromagnetism; domain wall width; spin density waves;

D O I：

10.1016/S0304-8853(01)00739-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magnetic properties of the Cr(0 0 1) surface have been studied by spin-polarized scanning tunneling spectroscopy (SP-STS). Spatially resolved mapping of the spectroscopic dI/dU signal at an energy close to the spin-polarized Cr(0 0 1) surface state allows the confirmation of the topological antiferromagnetic order of the Cr(0 0 1) surface, It is shown that the presence of screw dislocations leads to the formation of domain walls which. exhibit a width of 120-170 rim. A long-period modulation of the SP-STS signal was not observed indicating that the bulk spin-density wave is modified at the surface due to symmetry breaking. (C) 2002 Elsevier Science B.V. All rights reserved.

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页码：64 / 69

页数：6

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