OBSERVATION OF LARGE KERR ANGLES IN THE NONLINEAR-OPTICAL RESPONSE FROM MAGNETIC MULTILAYERS

被引：127

作者：

KOOPMANS, B ^{[1
]}

KOERKAMP, MG ^{[1
]}

RASING, T ^{[1
]}

VANDENBERG, H ^{[1
]}

机构：

[1] SIEMENS AG, D-91052 ERLANGEN, GERMANY

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.74.3692

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed a longitudinal nonlinear (second-harmonic) Kerr rotation up to 22° for an Fe(2 nm)/Cr(2 nm) multilayer on an SiO2 substrate that shows a linear Kerr rotation of only a few hundreths of a degree. The latter value excludes any linearly induced mechanism and confirms the interface sensitivity of this nonlinear Kerr technique. The enormous enhancement is shown to be in good agreement with recent predictions, based on spin dependent band structure calculations. The local optical field effects are shown to play an important role for the additional enhancements for such multilayers on a substrate. © 1995 The American Physical Society.

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页码：3692 / 3695

页数：4

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