Browsing by Subject "GA1-XMNXAS"

Now showing items 1-6 of 6

    • Character of states near the Fermi level in (Ga,Mn)As: Impurity to valence band crossover RID E-6453-2010 
      Jungwirth, T.; Sinova, Jairo; MacDonald, A. H.; Gallagher, B. L.; Novak, V.; Edmonds, K. W.; Rushforth, A. W.; Campion, R. P.; Foxon, C. T.; Eaves, L.; Olejnik, E.; Masek, J.; Yang, S-R Eric; Wunderlich, J.; Gould, C.; Molenkamp, L. W.; Dietl, T.; Ohno, H. (American Physical Society, 2007)
      We discuss the character of states near the Fermi level in Mn-doped GaAs, as revealed by a survey of dc transport and optical studies over a wide range of Mn concentrations. A thermally activated valence-band contribution ...
    • Curie temperature trends in (III,Mn)V ferromagnetic semiconductors 
      Jungwirth, T.; Konig, J.; Sinova, Jairo; Kucera, J.; MacDonald, AH. (American Physical Society, 2002)
    • Ferromagnetic transition temperature enhancement in (Ga,Mn)As semiconductors by carbon codoping 
      Jungwirth, T.; Masek, J.; Sinova, Jairo; MacDonald, AH. (American Physical Society, 2003)
      We present a theoretical study of (Ga,Mn)(As,C) diluted magnetic semiconductors with high C acceptor density that combines insights from phenomenological model and microscopic approaches. A tight-binding coherent-potential ...
    • Magnetization relaxation in (Ga,Mn)As ferromagnetic semiconductors 
      Sinova, Jairo; Jungwirth, T.; Liu, X.; Sasaki, Y.; Furdyna, JK; Atkinson, WA; MacDonald, AH. (American Physical Society, 2004)
      We describe a theory of Mn local-moment magnetization relaxation due to p-d kinetic-exchange coupling with the itinerant-spin subsystem in the ferromagnetic semiconductor (Ga,Mn)As alloy. The theoretical Gilbert damping ...
    • Optical properties of metallic (III, Mn)V ferromagnetic semiconductors in the infrared to visible range 
      Hankiewicz, EM; Jungwirth, T.; Dietl, T.; Timm, C.; Sinova, Jairo. (American Physical Society, 2004)
      We report on a study of the ac conductivity and magneto-optical properties of metallic ferromagnetic (III, Mn)V semiconductors in the infrared to visible spectrum at zero temperature. Our analysis is based on the successful ...
    • Prospects for high temperature ferromagnetism in (Ga,Mn)As semiconductors 
      Jungwirth, T.; Wang, KY; Masek, J.; Edmonds, KW; Konig, J.; Sinova, Jairo; Polini, M.; Goncharuk, NA; MacDonald, AH; Sawicki, M.; Rushforth, AW; Campion, RP; Zhao, LX; Foxon, CT; Gallagher, BL. (American Physical Society, 2005)
      We report on a comprehensive combined experimental and theoretical study of Curie temperature trends in (Ga,Mn)As ferromagnetic semiconductors. Broad agreement between theoretical expectations and measured data allows us ...