Hydrogen Control of Ferromagnetism in a Dilute Magnetic Semiconductor

Goennenwein, Sebastian T. B.; Wassner, Thomas A.; Huebl, Hans; Brandt, Martin S.; Philipp, Jan B.; Opel, Matthias; Gross, Rudolf; Koeder, Achim; Schoch, Wladimir; Waag, Andreas

Hydrogen Control of Ferromagnetism in a Dilute Magnetic Semiconductor

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Datum

2004

Autor:innen

Goennenwein, Sebastian T. B.

Wassner, Thomas A.

Huebl, Hans

Brandt, Martin S.

Philipp, Jan B.

Opel, Matthias

Gross, Rudolf

Koeder, Achim

Schoch, Wladimir

Waag, Andreas

DOI (zitierfähiger Link)

https://doi.org/10.1103/PhysRevLett.92.227202

Sammlungen

Physik

Publikationstyp

Zeitschriftenartikel

Publikationsstatus

Published

Erschienen in

Physical Review Letters. American Physical Society (APS). 2004, 92(22), 227202. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.92.227202

Zusammenfassung

We show that upon exposure to a remote dc hydrogen plasma, the magnetic and electronic properties of the dilute magnetic semiconductor Ga_1-xMn_xAs change qualitatively. While the as-grown Ga_1-xMn_xAs thin films are ferromagnetic at temperatures T less, similar 70 K, the samples are found to be paramagnetic after the hydrogenation, with a Brillouin-type magnetization curve even at T=2 K. Comparing magnetization and electronic transport measurements, we conclude that the density of free holes p is significantly reduced by the plasma process, while the density of Mn magnetic moments does not change.

Fachgebiet (DDC)

530 Physik

Zitieren

ISO 690

GOENNENWEIN, Sebastian T. B., Thomas A. WASSNER, Hans HUEBL, Martin S. BRANDT, Jan B. PHILIPP, Matthias OPEL, Rudolf GROSS, Achim KOEDER, Wladimir SCHOCH, Andreas WAAG, 2004. Hydrogen Control of Ferromagnetism in a Dilute Magnetic Semiconductor. In: Physical Review Letters. American Physical Society (APS). 2004, 92(22), 227202. ISSN 0031-9007. eISSN 1079-7114. Available under: doi: 10.1103/PhysRevLett.92.227202

BibTex

@article{Goennenwein2004-06-04Hydro-52558,
  year={2004},
  doi={10.1103/PhysRevLett.92.227202},
  title={Hydrogen Control of Ferromagnetism in a Dilute Magnetic Semiconductor},
  number={22},
  volume={92},
  issn={0031-9007},
  journal={Physical Review Letters},
  author={Goennenwein, Sebastian T. B. and Wassner, Thomas A. and Huebl, Hans and Brandt, Martin S. and Philipp, Jan B. and Opel, Matthias and Gross, Rudolf and Koeder, Achim and Schoch, Wladimir and Waag, Andreas},
  note={Article Number: 227202}
}

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