Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

M. H. Ham, M. C. Jeong, W. Y. Lee, J. M. Myoung, J. M. Lee, J. Y. Chang, S. H. Han

Research output: Contribution to journalConference article

Abstract

We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

Original languageEnglish
Pages (from-to)1041-1044
Number of pages4
JournalMaterials Science Forum
Volume449-452
Issue numberII
Publication statusPublished - 2004 Jul 26

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Galvanomagnetic effects
Ferromagnetism
Epitaxial films
ferromagnetism
Electron gas
Magnetoresistance
Curie temperature
Molecular beam epitaxy
Plasmas
electron gas
low concentrations
molecular beam epitaxy
moments
Temperature
interactions
temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)

Cite this

Ham, M. H., Jeong, M. C., Lee, W. Y., Myoung, J. M., Lee, J. M., Chang, J. Y., & Han, S. H. (2004). Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films. Materials Science Forum, 449-452(II), 1041-1044.
Ham, M. H. ; Jeong, M. C. ; Lee, W. Y. ; Myoung, J. M. ; Lee, J. M. ; Chang, J. Y. ; Han, S. H. / Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films. In: Materials Science Forum. 2004 ; Vol. 449-452, No. II. pp. 1041-1044.
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abstract = "We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.",
author = "Ham, {M. H.} and Jeong, {M. C.} and Lee, {W. Y.} and Myoung, {J. M.} and Lee, {J. M.} and Chang, {J. Y.} and Han, {S. H.}",
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Ham, MH, Jeong, MC, Lee, WY, Myoung, JM, Lee, JM, Chang, JY & Han, SH 2004, 'Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films', Materials Science Forum, vol. 449-452, no. II, pp. 1041-1044.

Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films. / Ham, M. H.; Jeong, M. C.; Lee, W. Y.; Myoung, J. M.; Lee, J. M.; Chang, J. Y.; Han, S. H.

In: Materials Science Forum, Vol. 449-452, No. II, 26.07.2004, p. 1041-1044.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

AU - Ham, M. H.

AU - Jeong, M. C.

AU - Lee, W. Y.

AU - Myoung, J. M.

AU - Lee, J. M.

AU - Chang, J. Y.

AU - Han, S. H.

PY - 2004/7/26

Y1 - 2004/7/26

N2 - We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

AB - We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

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M3 - Conference article

VL - 449-452

SP - 1041

EP - 1044

JO - Materials Science Forum

JF - Materials Science Forum

SN - 0255-5476

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Ham MH, Jeong MC, Lee WY, Myoung JM, Lee JM, Chang JY et al. Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films. Materials Science Forum. 2004 Jul 26;449-452(II):1041-1044.