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  Photoemission study of Al adlayers on Mn

Dhaka, R. S., Shukla, A. K., Horn, K., & Barman, S. R. (2011). Photoemission study of Al adlayers on Mn. Physical Review B, 84(24): 245404. doi:10.1103/PhysRevB.84.245404.

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Dhaka, R. S.1, Author
Shukla, A. K.1, Author
Horn, Karsten2, Author           
Barman, Sudipto Roy1, Author
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1Surface Physics Laboratory, UGC-DAE Consortium for Scientific Research, Khandwa Road, Indore, 452001 Madhya Pradesh, India, ou_persistent22              
2Molecular Physics, Fritz Haber Institute, Max Planck Society, ou_634545              

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 Abstract: Al overlayers on Mn, studied by photoemission spectroscopy, show a large lowering of the Al 2p core-level binding energy by 0.5 eV at submonolayer (0.1 ML) coverage. The binding energy increases with coverage and reaches the bulk Al value at ≈1.3 ML. The Al 2p core-level spectrum exhibits extra components related to the different chemical environment at the interface, which decrease in intensity with increasing Al coverage. The Al related plasmon loss features appear above 1 ML. The present results are explained by a strong Al s, p-Mn 3d hybridization at the submonolayer coverage due to interface alloying, whose influence on the spectra is dominated by metallic bonding in the Al layer as coverage increases. The valence-band spectra demonstrate systematic suppression of Mn 3d-like states and emergence of a parabolic free-electron-like Al density of states.

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Language(s): eng - English
 Dates: 2011-08-052011-11-1520112011-12-07
 Publication Status: Published in print
 Pages: 6
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 Rev. Type: Peer
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Title: Physical Review B
  Alternative Title : Phys. Rev. B
Source Genre: Journal
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Pages: - Volume / Issue: 84 (24) Sequence Number: 245404 Start / End Page: - Identifier: -