Theory for spin-polarized oscillations in nonlinear optics due to quantum well states

被引：20

作者：

Luce, TA

Hubner, W

Bennemann, KH

机构：

[1] Institute for Theoretical Physics, Freie Universität Berlin, Berlin, D-14195, Arnimallee

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 13期

关键词：

D O I：

10.1103/PhysRevLett.77.2810

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using an electronic tight-binding theory we calculate the nonlinear magneto-optical response from an x-Cu/Fe/Cu(001) film as a function of frequency and Cu overlayer thickness (x = 3-25). We find very strong spin-polarized oscillations with periods of 6 and 11 monolayers due to quantum well states. These oscillations are enhanced by the large density of Fe d states close to the Fermi level acting as intermediate states for frequency doubling. The results show that optical second harmonic generation is a very sensitive probe of electronic structures and is even k sensitive.

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页码：2810 / 2813

页数：4

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