Identification of the interstitial Mn site in ferromagnetic (Ga,Mn)As

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Lima, TAL (Author) Other; Wahl, U (Author) Other; Augustyns, V (Author) Other; Silva, DJ (Author) Other; Costa, A (Author) Other; Houben, K (Author) Other; Edmonds, KW (Author) Other; Gallagher, BL (Author) Other; Campion, RP (Author) Other; Van Bael, MJ (Author) Other; da Silva, MR (Author) Other; Correia, JG (Author) Other; araujo, j. p. (Author) FCUP; Temst, K (Author) Other; Vantomme, A (Author) Other; Pereira, LMC (Author) Other

Journal

Title: Applied Physics Letters

Vol. 106

Final page: 012406

ISSN: 0003-6951

Publisher: American Institute of Physics

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 7 Citations

Other information

Authenticus ID: P-00A-5K4

DOI: 10.1063/1.4905556

Abstract (EN): We determined the lattice location of Mn in ferromagnetic (Ga,Mn)As using the electron emission channeling technique. We show that interstitial Mn occupies the tetrahedral site with As nearest neighbors (T-As) both before and after thermal annealing at 200 degrees C, whereas the occupancy of the tetrahedral site with Ga nearest neighbors (T-Ga) is negligible. T-As is therefore the energetically favorable site for interstitial Mn in isolated form as well as when forming complexes with substitutional Mn. These results shed new light on the long standing controversy regarding T-As versus T-Ga occupancy of interstitial Mn in (Ga,Mn)As. (C) 2015 AIP Publishing LLC.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5