Intrinsic and extrinsic x-ray absorption effects in soft x-ray diffraction from the superstructure in magnetite

被引：9

作者：

Chang, C. F. ^{[1
]}

Schlappa, J. ^{[1
]}

Buchholz, M. ^{[1
]}

Tanaka, A. ^{[2
]}

Schierle, E. ^{[3
]}

Schmitz, D. ^{[3
]}

Ott, H. ^{[1
]}

Sutarto, R. ^{[1
]}

Willers, T. ^{[1
]}

Metcalf, P. ^{[4
]}

Tjeng, L. H. ^{[1
,5
]}

Schuessler-Langeheine, C. ^{[1
]}

机构：

[1] Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany

[2] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[3] Helmholtz Zentrum Berlin Mat & Energie GmbH, D-12489 Berlin, Germany

[4] Purdue Univ, Dept Chem, W Lafayette, IN 47907 USA

[5] Max Planck Inst Chem Phys Solids, D-01187 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2011年 / 83卷 / 07期

关键词：

TRANSITION; FE3O4;

D O I：

10.1103/PhysRevB.83.073105

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We studied the (00 1/2) diffraction peak in the low-temperature phase of magnetite (Fe(3)O(4)) using resonant soft x-ray diffraction at the Fe-L(2,3) and O-K resonances. We studied both molecular-beam-epitaxy grown thin films and in situ cleaved single crystals. From the comparison, we have been able to determine quantitatively the contribution of intrinsic absorption effects, thereby arriving at a consistent result for the (00 1/2) diffraction peak spectrum. Our data also allow for the identification of extrinsic effects, e. g., for a detailed modeling of the spectra in case a dead surface layer is present that is only absorbing photons but does not contribute to the scattering signal.

引用

页数：4

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