Deutsch
 
Benutzerhandbuch Datenschutzhinweis Impressum Kontakt
  DetailsucheBrowse

Datensatz

 
 
DownloadE-Mail
  Spin-resolved low-energy and hard x-ray photoelectron spectroscopy of off-stoichiometric Co2MnSi Heusler thin films exhibiting a record TMR

Fetzer, R., Ouardi, S., Honda, Y., Liu, H.-x., Chadov, S., Balke, B., et al. (2015). Spin-resolved low-energy and hard x-ray photoelectron spectroscopy of off-stoichiometric Co2MnSi Heusler thin films exhibiting a record TMR. Journal of Physics D: Applied Physics, 48: 164002, pp. 1-12. doi:10.1088/0022-3727/48/16/164002.

Item is

Basisdaten

einblenden: ausblenden:
Datensatz-Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-CB06-A Versions-Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-CB07-8
Genre: Zeitschriftenartikel

Externe Referenzen

einblenden:

Urheber

einblenden:
ausblenden:
 Urheber:
Fetzer, Roman1, Autor
Ouardi, Siham2, Autor              
Honda, Yusuke1, Autor
Liu, Hong-xi1, Autor
Chadov, Stanislav3, Autor              
Balke, Benjamin1, Autor
Ueda, Shigenori1, Autor
Suzuki, Motohiro1, Autor
Uemura, Tetsuya1, Autor
Yamamoto, Masafumi1, Autor
Aeschlimann, Martin1, Autor
Cinchetti, Mirko, Autor              
Fecher, Gerhard H.4, Autor              
Felser, Claudia5, Autor              
Affiliations:
1External Organizations, ou_persistent22              
2Siham Ouardi, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863439              
3Stanislav Chadov, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863440              
4Gerhard Fecher, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863431              
5Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

Inhalt

einblenden:
ausblenden:
Schlagwörter: -
 Zusammenfassung: Half-metallic Co2MnSi-based Heusler compounds have attracted attention because they yield very high tunnelling magnetoresistance (TMR) ratios. Record TMR ratios of 1995% (at 4.2 K) are obtained from off-stoichiometric Co2MnSi-based magnetic tunnel junctions. This work reports on a combination of band structure calculations and spin-resolved and photon-polarisation-dependent photoelectron spectroscopy for off-stoichiometric Heusler thin films with the composition Co2Mn1.30Si0.84. Co and Mn are probed by magnetic dichroism in angle-resolved photoelectron spectroscopy at the 2p core level. In contrast to the delocalised Co 3d states, a pronounced localisation of the Mn 3d states is deduced from the corresponding 2p core level spectra. The valence states are investigated by linear dichroism using both hard x-ray and very-low-photon-energy excitation. When a very low photon energy is used for excitation, the valence bands exhibit a spin polarisation of about 30% at the Fermi energy. First principles calculations reveal that the low spin polarisation might be caused by a spin-flip process in the photoelectron final states.

Details

einblenden:
ausblenden:
Sprache(n): eng - Englisch
 Datum: 2015-04-08
 Publikationsstatus: Im Druck publiziert
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: -
 Identifikatoren: ISI: 000352525900003
DOI: 10.1088/0022-3727/48/16/164002
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden:

Quelle 1

einblenden:
ausblenden:
Titel: Journal of Physics D: Applied Physics
  Kurztitel : J. Phys. D: Appl. Phys.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Bristol : IOP Publishing
Seiten: - Band / Heft: 48 Artikelnummer: 164002 Start- / Endseite: 1 - 12 Identifikator: ISSN: 0022-3727
CoNE: /journals/resource/0022-3727