Domain-Wall Induced Large Magnetoresistance Effects at Zero Applied Field in Ballistic Nanocontacts

von Bieren, Arndt; Patra, Ajit K.; Krzyk, Stephen; Rhensius, Jan; Reeve, Robert M.; Heyderman, Laura J.; Hoffmann-Vogel, Regina; Kläui, Mathias

Domain-Wall Induced Large Magnetoresistance Effects at Zero Applied Field in Ballistic Nanocontacts

Dateien

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Datum

2013

Autor:innen

von Bieren, Arndt

Patra, Ajit K.

Krzyk, Stephen

Rhensius, Jan

Reeve, Robert M.

Heyderman, Laura J.

Hoffmann-Vogel, Regina

Kläui, Mathias

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. 2013, 110(6), 067203. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.110.067203

Zusammenfassung

We determine magnetoresistance effects in stable and clean Permalloy nanocontacts of variable cross section, fabricated by UHV deposition and in situ electromigration. To ascertain the magnetoresistance (MR) effects originating from a magnetic domain wall, we measure the resistance values with and without such a wall at zero applied field. In the ballistic transport regime, the MR ratio reaches up to 50% and exhibits a previously unobserved sign change. Our results can be reproduced by recent atomistic calculations for different atomic configurations of the nanocontact, highlighting the importance of the detailed atomic arrangement for the MR effect.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

VON BIEREN, Arndt, Ajit K. PATRA, Stephen KRZYK, Jan RHENSIUS, Robert M. REEVE, Laura J. HEYDERMAN, Regina HOFFMANN-VOGEL, Mathias KLÄUI, 2013. Domain-Wall Induced Large Magnetoresistance Effects at Zero Applied Field in Ballistic Nanocontacts. In: Physical Review Letters. 2013, 110(6), 067203. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.110.067203

BibTex

@article{vonBieren2013-02-08Domai-42471,
  year={2013},
  doi={10.1103/PhysRevLett.110.067203},
  title={Domain-Wall Induced Large Magnetoresistance Effects at Zero Applied Field in Ballistic Nanocontacts},
  number={6},
  volume={110},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={von Bieren, Arndt and Patra, Ajit K. and Krzyk, Stephen and Rhensius, Jan and Reeve, Robert M. and Heyderman, Laura J. and Hoffmann-Vogel, Regina and Kläui, Mathias},
  note={Article Number: 067203}
}

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