UNBIASED ACCESS TO EXCHANGE SPLITTING OF MAGNETIC BANDS USING THE MAXIMUM-ENTROPY METHOD

被引：58

作者：

VONDERLINDEN, W

DONATH, M

DOSE, V

机构：

[1] Max-Planck-Institut für Plasmaphysik, EURATOM Association

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.71.899

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The experimental information about magnetic bands and their temperature dependence is distorted by Fermi distribution and apparatus function. The recovery of the spectral density constitutes an ill-posed inversion problem. We have invoked the maximum entropy regularization to deconvolute spin-resolved inverse photoemission data of Ni(110). The effective energy resolution is hereby improved by a factor of 5 and structures below E(F), which are generally lost in inverse photoemission, are recovered. The temperature-dependent data for Ni reveal clearly a pair of spin-split bands. The splitting vanishes on approaching the Curie temperature.

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页码：899 / 902

页数：4

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