μSR investigation of a new diluted magnetic semiconductor Li(Zn,Mn,Cu)As with Mn and Cu codoping at the same Zn sites Academic Article uri icon

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abstract

  • We report the successful synthesis and characterization of a new type I-II-V bulk form diluted magnetic semiconductor (DMS) Li(Zn,Mn,Cu)As, in which charge and spin doping are decoupled via (Cu,Zn) and (Mn,Zn) substitution at the same Zn sites. Ferromagnetic transition temperature up to  ∼33 K has been observed with a coercive field  ∼40 Oe for the 12.5% doping level. μSR measurements confirmed that the magnetic volume fraction reaches nearly 100% at 2 K, and the mechanism responsible for the ferromagnetic interaction in this system is the same as other bulk form DMSs.

authors

  • Guo, SL
  • Zhao, Y
  • Man, HY
  • Ding, C
  • Gong, X
  • Zhi, GX
  • Fu, LC
  • Gu, YL
  • Frandsen, BA
  • Liu, L
  • Cheung, SC
  • Munsie, TJ
  • Wilson, MN
  • Cai, YP
  • Luke, Graeme
  • Uemura, YJ
  • Ning, FL

publication date

  • September 14, 2016