Description: Manganese adlayers on i-Al-Pd-Mn quasicrystal: growth and electronic structure

This title appears in the Scientific Report : 2009

Manganese adlayers on i-Al-Pd-Mn quasicrystal: growth and electronic structure

Pseudomorphic growth of thin elemental metal films is often observed on a variety of crystalline solids. On quasicrystalline surfaces with their complex structure and the absence of translational periodicity, the situation is different since elemental metals do not exhibit quasicrystalline order, an...

Personal Name(s):	Shukla, A.K.
	Dhaka, R.S. / D'Souza, S.W. / Maniraj, M. / Barman, S.R. / Horn, K. / Ebert, Ph. / Urban, K. / Wu, D. / Lograsso, T.A.
Contributing Institute:	Mikrostrukturforschung; IFF-8 JARA-FIT; JARA-FIT
Published in:	Journal of physics / Condensed matter, 21 (2009) S. 405005
Imprint:	Bristol IOP Publ. 2009
Physical Description:	405005
PubMed ID:	21832407
DOI:	10.1088/0953-8984/21/40/405005
Document Type:	Journal Article
Research Program:	Grundlagen für zukünftige Informationstechnologien Erneuerbare Energien
Series Title:	Journal of Physics: Condensed Matter 21
Subject (ZB):	J
	Publikationsportal JuSER

Please use the identifier: http://dx.doi.org/10.1088/0953-8984/21/40/405005 in citations.

Pseudomorphic growth of thin elemental metal films is often observed on a variety of crystalline solids. On quasicrystalline surfaces with their complex structure and the absence of translational periodicity, the situation is different since elemental metals do not exhibit quasicrystalline order, and hence the specific interaction between overlayer and substrate is decisive. Here we study the growth of manganese films on an icosahedral i-Al-Pd-Mn alloy with a view to establishing the growth mode and electronic structure. Although we observe an exponential intensity variation of the adlayer and substrate related x-ray photoemission spectroscopy (XPS) peaks, low energy electron diffraction (LEED) shows that Mn adlayers do not exhibit quasicrystallinity. The detailed structure of the Mn 2p core level line reveals considerable electronic structure differences between the quasicrystalline and elemental metal environment. Evidence of a substantial local magnetic moment on the Mn atoms in the overlayer (about 2.8 µ(B)) is obtained from the Mn 3s exchange splitting.