Ultrathin Co films on flat and vicinal Cu(111) surfaces: per atom determination of orbital and spin moments
(2003) 281st Wilhelm and Else Heraeus Seminar 15(5). p.573-586- Abstract
- We have performed x-ray magnetic circular dichroism, x-ray resonant magnetic scattering and scanning tunnelling microscopy measurements on ultrathin Co films deposited on flat and vicinal Cu(111). The range of film thickness varies between one and 25 monolayers. For the vicinal Cu(111), Co deposition below one monolayer leads to the formation of elongated islands preferentially oriented along the step edges. These islands extend over lateral length scales of up to several thousand angstroms. For the thicker films we still observe that the vicinal surface leads to the occurrence of a preferential uniaxial growth direction. No such preferential growth direction can be identified for the flat surface. In correlation to the Co growth we... (More)
- We have performed x-ray magnetic circular dichroism, x-ray resonant magnetic scattering and scanning tunnelling microscopy measurements on ultrathin Co films deposited on flat and vicinal Cu(111). The range of film thickness varies between one and 25 monolayers. For the vicinal Cu(111), Co deposition below one monolayer leads to the formation of elongated islands preferentially oriented along the step edges. These islands extend over lateral length scales of up to several thousand angstroms. For the thicker films we still observe that the vicinal surface leads to the occurrence of a preferential uniaxial growth direction. No such preferential growth direction can be identified for the flat surface. In correlation to the Co growth we observe an increase of both the orbital and the spin moment per Co atom on vicinal Cu(111) of about 25% versus what was observed for Co on flat Cu(111). This enhancement is observed in both the x-ray absorption and the reflectivity measurements. Similar to what was earlier reported for Co on Cu(100) we also observe for the case Co on Cu(111) an increase in the ratio m(l)/m(s), (orbital to spin moments) of 40% for thin Co films. In contrast to what has been reported for Co films on flat and vicinal Cu(100) we do not observe any major variations in the occupancy of the Co 3d states for Co grown on the vicinal Cu(111) surface. (Less)
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https://lup.lub.lu.se/record/315716
- author
- Hahlin, A ; Hunter Dunn, Jonathan LU ; Karis, O ; Poulopoulos, P ; Nunthel, R ; Lindner, J and Arvanitis, D
- organization
- publishing date
- 2003
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Journal of Physics: Condensed Matter
- volume
- 15
- issue
- 5
- pages
- 573 - 586
- publisher
- IOP Publishing
- conference name
- 281st Wilhelm and Else Heraeus Seminar
- conference location
- Berlin, Germany
- conference dates
- 2002-06-12 - 2002-06-15
- external identifiers
-
- wos:000181618200012
- scopus:0037433299
- ISSN
- 0953-8984
- DOI
- 10.1088/0953-8984/15/5/311
- language
- English
- LU publication?
- yes
- id
- a8af9f9b-eb6b-4a56-b70a-e7fae607f21f (old id 315716)
- date added to LUP
- 2016-04-01 15:56:38
- date last changed
- 2022-04-15 01:01:08
@inproceedings{a8af9f9b-eb6b-4a56-b70a-e7fae607f21f,
abstract = {{We have performed x-ray magnetic circular dichroism, x-ray resonant magnetic scattering and scanning tunnelling microscopy measurements on ultrathin Co films deposited on flat and vicinal Cu(111). The range of film thickness varies between one and 25 monolayers. For the vicinal Cu(111), Co deposition below one monolayer leads to the formation of elongated islands preferentially oriented along the step edges. These islands extend over lateral length scales of up to several thousand angstroms. For the thicker films we still observe that the vicinal surface leads to the occurrence of a preferential uniaxial growth direction. No such preferential growth direction can be identified for the flat surface. In correlation to the Co growth we observe an increase of both the orbital and the spin moment per Co atom on vicinal Cu(111) of about 25% versus what was observed for Co on flat Cu(111). This enhancement is observed in both the x-ray absorption and the reflectivity measurements. Similar to what was earlier reported for Co on Cu(100) we also observe for the case Co on Cu(111) an increase in the ratio m(l)/m(s), (orbital to spin moments) of 40% for thin Co films. In contrast to what has been reported for Co films on flat and vicinal Cu(100) we do not observe any major variations in the occupancy of the Co 3d states for Co grown on the vicinal Cu(111) surface.}},
author = {{Hahlin, A and Hunter Dunn, Jonathan and Karis, O and Poulopoulos, P and Nunthel, R and Lindner, J and Arvanitis, D}},
booktitle = {{Journal of Physics: Condensed Matter}},
issn = {{0953-8984}},
language = {{eng}},
number = {{5}},
pages = {{573--586}},
publisher = {{IOP Publishing}},
title = {{Ultrathin Co films on flat and vicinal Cu(111) surfaces: per atom determination of orbital and spin moments}},
url = {{http://dx.doi.org/10.1088/0953-8984/15/5/311}},
doi = {{10.1088/0953-8984/15/5/311}},
volume = {{15}},
year = {{2003}},
}