Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition
We investigate Co nanostructures on Bi _2 Se _3 by means of scanning tunneling microscopy and spectroscopy (STM/STS), x-ray absorption spectroscopy, x-ray magnetic dichroism (XMCD) and calculations using the density functional theory (DFT). In the single adatom regime we find two different adsorptio...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2013-01-01
|
| Series: | New Journal of Physics |
| Online Access: | https://doi.org/10.1088/1367-2630/15/11/113026 |
| _version_ | 1797751693666942976 |
|---|---|
| author | T Eelbo M Sikora G Bihlmayer M Dobrzański A Kozłowski I Miotkowski R Wiesendanger |
| author_facet | T Eelbo M Sikora G Bihlmayer M Dobrzański A Kozłowski I Miotkowski R Wiesendanger |
| author_sort | T Eelbo |
| collection | DOAJ |
| description | We investigate Co nanostructures on Bi _2 Se _3 by means of scanning tunneling microscopy and spectroscopy (STM/STS), x-ray absorption spectroscopy, x-ray magnetic dichroism (XMCD) and calculations using the density functional theory (DFT). In the single adatom regime we find two different adsorption sites by STM. Our calculations reveal these to be the fcc and hcp hollow sites of the substrate. STS shows a pronounced peak for only one species of the Co adatoms indicating different electronic properties of both types. These are explained on the basis of our DFT calculations by different hybridizations with the substrate. Using XMCD we find a coverage dependent spin reorientation transition from easy-plane toward out-of-plane. We suggest clustering to be the predominant cause for this observation. |
| first_indexed | 2024-03-12T16:52:19Z |
| format | Article |
| id | doaj.art-1d5d93da50f9443d90676121e432eb63 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:52:19Z |
| publishDate | 2013-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-1d5d93da50f9443d90676121e432eb632023-08-08T11:05:24ZengIOP PublishingNew Journal of Physics1367-26302013-01-01151111302610.1088/1367-2630/15/11/113026Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transitionT Eelbo0M Sikora1G Bihlmayer2M Dobrzański3A Kozłowski4I Miotkowski5R Wiesendanger6Institute of Applied Physics, University of Hamburg , Jungiusstraße 11, D-20355 Hamburg, GermanyFaculty of Physics and Applied Computer Science, AGH University of Science and Technology , 30 Mickiewicza Avenue, P-30-059 Krakow, PolandPeter Grünberg Institut and Institute for Advanced Simulation , Forschungszentrum Jülich and JARA, D-52428 Jülich, GermanyFaculty of Physics and Applied Computer Science, AGH University of Science and Technology , 30 Mickiewicza Avenue, P-30-059 Krakow, PolandFaculty of Physics and Applied Computer Science, AGH University of Science and Technology , 30 Mickiewicza Avenue, P-30-059 Krakow, PolandDepartment of Physics, Purdue University , 525 Northwestern Avenue, West Lafayette, IN, USAInstitute of Applied Physics, University of Hamburg , Jungiusstraße 11, D-20355 Hamburg, GermanyWe investigate Co nanostructures on Bi _2 Se _3 by means of scanning tunneling microscopy and spectroscopy (STM/STS), x-ray absorption spectroscopy, x-ray magnetic dichroism (XMCD) and calculations using the density functional theory (DFT). In the single adatom regime we find two different adsorption sites by STM. Our calculations reveal these to be the fcc and hcp hollow sites of the substrate. STS shows a pronounced peak for only one species of the Co adatoms indicating different electronic properties of both types. These are explained on the basis of our DFT calculations by different hybridizations with the substrate. Using XMCD we find a coverage dependent spin reorientation transition from easy-plane toward out-of-plane. We suggest clustering to be the predominant cause for this observation.https://doi.org/10.1088/1367-2630/15/11/113026 |
| spellingShingle | T Eelbo M Sikora G Bihlmayer M Dobrzański A Kozłowski I Miotkowski R Wiesendanger Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition New Journal of Physics |
| title | Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition |
| title_full | Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition |
| title_fullStr | Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition |
| title_full_unstemmed | Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition |
| title_short | Co atoms on Bi2Se3 revealing a coverage dependent spin reorientation transition |
| title_sort | co atoms on bi2se3 revealing a coverage dependent spin reorientation transition |
| url | https://doi.org/10.1088/1367-2630/15/11/113026 |
| work_keys_str_mv | AT teelbo coatomsonbi2se3revealingacoveragedependentspinreorientationtransition AT msikora coatomsonbi2se3revealingacoveragedependentspinreorientationtransition AT gbihlmayer coatomsonbi2se3revealingacoveragedependentspinreorientationtransition AT mdobrzanski coatomsonbi2se3revealingacoveragedependentspinreorientationtransition AT akozłowski coatomsonbi2se3revealingacoveragedependentspinreorientationtransition AT imiotkowski coatomsonbi2se3revealingacoveragedependentspinreorientationtransition AT rwiesendanger coatomsonbi2se3revealingacoveragedependentspinreorientationtransition |