title: μSR investigation of a new diluted magnetic semiconductor Li(Zn,Mn,Cu)As with Mn and Cu codoping at the same Zn sites.
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.affiliation: Department of Physics, Zhejiang University, Hangzhou 310027, People's Republic of China. Collaborative Innovation Center of Advanced Microstructures, Nanjing 210093, People's Republic of China.
authors.forename: S L
authors.initials: SL
authors.lastname: Guo
authors.forename: Y
authors.initials: Y
authors.lastname: Zhao
authors.forename: H Y
authors.initials: HY
authors.lastname: Man
authors.forename: C
authors.initials: C
authors.lastname: Ding
authors.forename: X
authors.initials: X
authors.lastname: Gong
authors.forename: G X
authors.initials: GX
authors.lastname: Zhi
authors.forename: L C
authors.initials: LC
authors.lastname: Fu
authors.forename: Y L
authors.initials: YL
authors.lastname: Gu
authors.forename: B A
authors.initials: BA
authors.lastname: Frandsen
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authors.initials: L
authors.lastname: Liu
authors.forename: S C
authors.initials: SC
authors.lastname: Cheung
authors.forename: T J
authors.initials: TJ
authors.lastname: Munsie
authors.forename: M N
authors.initials: MN
authors.lastname: Wilson
authors.forename: Y P
authors.initials: YP
authors.lastname: Cai
authors.forename: G M
authors.initials: GM
authors.lastname: Luke
authors.forename: Y J
authors.initials: YJ
authors.lastname: Uemura
authors.forename: F L
authors.initials: FL
authors.lastname: Ning