Spin-resolved appearance potential spectroscopy investigations on Fe/Cu(001) overlayers

V. Popescu, H. Ebert, L. Szunyogh, P. Weinberger, M. Donath

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The theoretical description of spin-resolved appearance potential spectroscopy (SR-APS) developed recently to deal with bulk transition-metal systems has been extended to free surfaces of Fen/Cu(001). Results of previous experimental work on fcc-Fe on top of a Cu(001) substrate were interpreted to indicate the coexistence of a few ferromagnetically coupled Fe layers on top of nonferromagnetic Fe layers for T=110 K. Recent theoretical work, on the other hand, found for n>2 that the ground-state of this system corresponds to antiferromagnetically coupled Fe layers. In order to clarify this situation the SR-APS spectra of Fen/Cu(001) have been calculated assuming the metastable ferromagnetic (FM) as well as antiferromagnetic (AFM) configuration. While for the FM configuration pronounced deviations from experiment were found, a nearly perfect agreement was obtained for the AFM ground-state configuration. This means that the experimental SR-APS spectra are not in conflict with the theoretical prediction but, on the contrary, they strongly support it.

Original languageEnglish
Pages (from-to)15241-15245
Number of pages5
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume61
Issue number22
Publication statusPublished - 2000

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Spectroscopy
Ground state
configurations
spectroscopy
ground state
Transition metals
transition metals
deviation
Substrates
predictions
Experiments

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Spin-resolved appearance potential spectroscopy investigations on Fe/Cu(001) overlayers. / Popescu, V.; Ebert, H.; Szunyogh, L.; Weinberger, P.; Donath, M.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 61, No. 22, 2000, p. 15241-15245.

Research output: Contribution to journalArticle

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