Wurtzite (Ga,Mn)As nanowire shells with ferromagnetic properties

J Sadowski; S Kret; A Šiušys; T Wojciechowski; K Gas; M F Islam; C M Canali; M Sawicki

doi:10.1039/c6nr08070g

Wurtzite (Ga,Mn)As nanowire shells with ferromagnetic properties

Nanoscale. 2017 Feb 9;9(6):2129-2137. doi: 10.1039/c6nr08070g.

Authors

J Sadowski¹, S Kret², A Šiušys², T Wojciechowski², K Gas², M F Islam³, C M Canali³, M Sawicki²

Affiliations

¹ MAX-IV Laboratory, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden. janusz.sadowski@maxiv.lu.se and Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82 Kalmar, Sweden and Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02-668 Warsaw, Poland.
² Institute of Physics, Polish Academy of Sciences, Aleja Lotnikow 32/46, PL-02-668 Warsaw, Poland.
³ Department of Physics and Electrical Engineering, Linnaeus University, SE-391 82 Kalmar, Sweden.

PMID: 28120988
DOI: 10.1039/c6nr08070g

Abstract

(Ga,Mn)As having a wurtzite crystal structure was coherently grown by molecular beam epitaxy on the {1100} side facets of wurtzite (Ga,In)As nanowires and further encapsulated by (Ga,Al)As and low temperature GaAs. For the first time, a truly long-range ferromagnetic magnetic order is observed in non-planar (Ga,Mn)As, which is attributed to a more effective hole confinement in the shell containing Mn by the proper selection/choice of both the core and outer shell materials.