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Radioactive ions for solid-state investigations at magnetic surfaces and interfaces

Hyperfine interactions observed at isomeric states of radioactive probe nuclei are used as a tool for solid-state investigations. This method is sensitive to atomic-scale properties. In recent years surface and interface investigations using radioactive probes delivered many results which can hardly...

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Detalles Bibliográficos
Autores principales: Bertschat, H H, Potzger, K, Weber, A, Zeitz, W D
Lenguaje:eng
Publicado: 2002
Materias:
Acceso en línea:http://cds.cern.ch/record/560341
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author Bertschat, H H
Potzger, K
Weber, A
Zeitz, W D
author_facet Bertschat, H H
Potzger, K
Weber, A
Zeitz, W D
author_sort Bertschat, H H
collection CERN
description Hyperfine interactions observed at isomeric states of radioactive probe nuclei are used as a tool for solid-state investigations. This method is sensitive to atomic-scale properties. In recent years surface and interface investigations using radioactive probes delivered many results which can hardly be achieved by any other method. Several groups, e.g., from Konstanz, Leuven, Groningen, Aarhus, Uppsala, Tel Aviv, Pennsylvania, contributed to this field. Our group studies magnetic properties at surfaces and interfaces performing perturbed angular correlation (PAC) measurements in the UHV chamber ASPIC (Apparatus for Surface Physics and Interfaces at CERN). We take advantage of the enhanced variety of PAC probes delivered by the on-line mass separator ISOLDE. First, we report on measurements of magnetic hyperfine fields (B/sub hf/) at Se adatoms on a ferromagnetic substrate using /sup 77/Se as a PAC probe. The investigation of induced magnetic interactions in nonmagnetic materials is a further subject of our studies. Here the nonmagnetic 4d element I'd is investigated, when it is in contact with ferromagnetic nickel. An outlook will be given on studies to be done in the future. The experiments were performed at the HMI, Berlin, and at CERN, Geneva. (20 refs).
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institution Organización Europea para la Investigación Nuclear
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spelling cern-5603412019-09-30T06:29:59Zhttp://cds.cern.ch/record/560341engBertschat, H HPotzger, KWeber, AZeitz, W DRadioactive ions for solid-state investigations at magnetic surfaces and interfacesCondensed MatterHyperfine interactions observed at isomeric states of radioactive probe nuclei are used as a tool for solid-state investigations. This method is sensitive to atomic-scale properties. In recent years surface and interface investigations using radioactive probes delivered many results which can hardly be achieved by any other method. Several groups, e.g., from Konstanz, Leuven, Groningen, Aarhus, Uppsala, Tel Aviv, Pennsylvania, contributed to this field. Our group studies magnetic properties at surfaces and interfaces performing perturbed angular correlation (PAC) measurements in the UHV chamber ASPIC (Apparatus for Surface Physics and Interfaces at CERN). We take advantage of the enhanced variety of PAC probes delivered by the on-line mass separator ISOLDE. First, we report on measurements of magnetic hyperfine fields (B/sub hf/) at Se adatoms on a ferromagnetic substrate using /sup 77/Se as a PAC probe. The investigation of induced magnetic interactions in nonmagnetic materials is a further subject of our studies. Here the nonmagnetic 4d element I'd is investigated, when it is in contact with ferromagnetic nickel. An outlook will be given on studies to be done in the future. The experiments were performed at the HMI, Berlin, and at CERN, Geneva. (20 refs).oai:cds.cern.ch:5603412002
spellingShingle Condensed Matter
Bertschat, H H
Potzger, K
Weber, A
Zeitz, W D
Radioactive ions for solid-state investigations at magnetic surfaces and interfaces
title Radioactive ions for solid-state investigations at magnetic surfaces and interfaces
title_full Radioactive ions for solid-state investigations at magnetic surfaces and interfaces
title_fullStr Radioactive ions for solid-state investigations at magnetic surfaces and interfaces
title_full_unstemmed Radioactive ions for solid-state investigations at magnetic surfaces and interfaces
title_short Radioactive ions for solid-state investigations at magnetic surfaces and interfaces
title_sort radioactive ions for solid-state investigations at magnetic surfaces and interfaces
topic Condensed Matter
url http://cds.cern.ch/record/560341
work_keys_str_mv AT bertschathh radioactiveionsforsolidstateinvestigationsatmagneticsurfacesandinterfaces
AT potzgerk radioactiveionsforsolidstateinvestigationsatmagneticsurfacesandinterfaces
AT webera radioactiveionsforsolidstateinvestigationsatmagneticsurfacesandinterfaces
AT zeitzwd radioactiveionsforsolidstateinvestigationsatmagneticsurfacesandinterfaces