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Suppression of hole-mediated ferromagnetism in Ga<sub>1−x</sub>Mn<sub>x</sub>P by hydrogen

Suppression of hole-mediated ferromagnetism in Ga1−xMnxP by hydrogen

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BIHLER, Christoph, Michael KRAUS, Martin S. BRANDT, Sebastian T. B. GÖNNENWEIN, Matthias OPEL, Michael A. SCARPULLA, Rouin FARSHCHI, David M. ESTRADA, Oscar D. DUBON, 2008. Suppression of hole-mediated ferromagnetism in Ga1−xMnxP by hydrogen. In: Journal of Applied Physics. American Institute of Physics (AIP). 104(1), 013908. ISSN 0021-8979. eISSN 1089-7550. Available under: doi: 10.1063/1.2952045

@article{Bihler2008Suppr-53079, title={Suppression of hole-mediated ferromagnetism in Ga1−xMnxP by hydrogen}, year={2008}, doi={10.1063/1.2952045}, number={1}, volume={104}, issn={0021-8979}, journal={Journal of Applied Physics}, author={Bihler, Christoph and Kraus, Michael and Brandt, Martin S. and Gönnenwein, Sebastian T. B. and Opel, Matthias and Scarpulla, Michael A. and Farshchi, Rouin and Estrada, David M. and Dubon, Oscar D.}, note={Article Number: 013908} }

Estrada, David M. 2021-03-05T09:27:44Z Gönnenwein, Sebastian T. B. terms-of-use Estrada, David M. Farshchi, Rouin Bihler, Christoph eng Dubon, Oscar D. Dubon, Oscar D. Brandt, Martin S. Kraus, Michael Farshchi, Rouin Scarpulla, Michael A. Suppression of hole-mediated ferromagnetism in Ga<sub>1−x</sub>Mn<sub>x</sub>P by hydrogen We report the passivation of the Mn acceptors in Ga<sub>1−x</sub>Mn<sub>x</sub>P upon exposure to a hydrogen plasma. The as-grown films are nonmetallic and ferromagnetic with a Curie temperature of T<sub>C</sub>=55 K. After hydrogenation the sample resistivity increases by approximately three orders of magnitude at room temperature and six orders of magnitude at 25 K. Furthermore, the hydrogenated samples are paramagnetic, which is evidenced by a magnetization curve at 5 K that is best described by a Brillouin function with g=2 and J=5/2 expected for Mn atoms in the 3d<sup>5</sup> configuration. Upon annealing, partial depassivation and a recovery of ferromagnetism are observed. These observations unambiguously demonstrate that the ferromagnetism in Ga<sub>1−x</sub>Mn<sub>x</sub>P is carrier-mediated similar to Ga<sub>1−x</sub>Mn<sub>x</sub>As. Scarpulla, Michael A. 2021-03-05T09:27:44Z Bihler, Christoph 2008 Gönnenwein, Sebastian T. B. Kraus, Michael Opel, Matthias Brandt, Martin S. Opel, Matthias

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