Matches in SemOpenAlex for { <https://semopenalex.org/work/W3208559439> ?p ?o ?g. }
Showing items 1 to 89 of
89
with 100 items per page.
- W3208559439 abstract "Fundamental Curie Temperature Limit in Ferromagnetic Ga 1-x Mn x As K. M. Yu and W. Walukiewicz, Electronic Materials Program, Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720 T. Wojtowicz, Institute of Physics, Polish Academy of Sciences, Warsaw, Poland and Department of Physics, University of Notre Dame, Notre Dame, IN 46556 W.L. Lim, X. Liu, U. Bindley, M. Dobrowolska, and J. K. Furdyna Department of Physics, University of Notre Dame, Notre Dame, IN 46556 ABSTRACT We provide unambiguous experimental evidence that the upper limit of ~110 K commonly observed for the Curie temperature T C of Ga 1-x Mn x As is caused by the Fermi- level- induced hole saturation. This conclusion is based on parallel studies of the location of Mn in the lattice, the effectiveness of acceptor center, and ferromagnetism on a series of Ga 1-x-y Mn x Be y As layers, in which the concentration of magnetic moments and of free holes can be independently controlled by the Mn and Be contents. Ion channeling and magnetization measurements show a dramatic increase of the concentration of Mn interstitials accompanied by a reduction of T C with increasing Be concentration. At the same time the free hole concentration remains relatively constant at ~5x10 20 cm -3 . These results indicate that the concentrations of free holes as well as of ferromagnetically active Mn spins are governed by the position of the Fermi level, which controls the formation energy of compensating interstitial Mn donors. Based on these results, we propose to use heavy n-type counter-doping of Ga 1-x Mn x As (by, e.g., Te) to suppress the formation of Mn interstitials at high x, and thus improve the T C of the alloy system. PACS numbers: 75.50.Pp, 73.61.Ey, 61.10.Ht, 81.40.Rs" @default.
- W3208559439 created "2021-11-08" @default.
- W3208559439 creator A5006746280 @default.
- W3208559439 creator A5014796436 @default.
- W3208559439 creator A5025402412 @default.
- W3208559439 creator A5031047635 @default.
- W3208559439 creator A5039082167 @default.
- W3208559439 creator A5039106761 @default.
- W3208559439 creator A5044549907 @default.
- W3208559439 creator A5055244029 @default.
- W3208559439 date "2002-09-24" @default.
- W3208559439 modified "2023-09-24" @default.
- W3208559439 title "Fundamental Curie temperature limit in ferromagnetic Ga1-xMnxAs" @default.
- W3208559439 hasPublicationYear "2002" @default.
- W3208559439 type Work @default.
- W3208559439 sameAs 3208559439 @default.
- W3208559439 citedByCount "0" @default.
- W3208559439 crossrefType "journal-article" @default.
- W3208559439 hasAuthorship W3208559439A5006746280 @default.
- W3208559439 hasAuthorship W3208559439A5014796436 @default.
- W3208559439 hasAuthorship W3208559439A5025402412 @default.
- W3208559439 hasAuthorship W3208559439A5031047635 @default.
- W3208559439 hasAuthorship W3208559439A5039082167 @default.
- W3208559439 hasAuthorship W3208559439A5039106761 @default.
- W3208559439 hasAuthorship W3208559439A5044549907 @default.
- W3208559439 hasAuthorship W3208559439A5055244029 @default.
- W3208559439 hasConcept C114614502 @default.
- W3208559439 hasConcept C115260700 @default.
- W3208559439 hasConcept C121332964 @default.
- W3208559439 hasConcept C147120987 @default.
- W3208559439 hasConcept C185544564 @default.
- W3208559439 hasConcept C185592680 @default.
- W3208559439 hasConcept C192562407 @default.
- W3208559439 hasConcept C26873012 @default.
- W3208559439 hasConcept C2778870898 @default.
- W3208559439 hasConcept C2779892579 @default.
- W3208559439 hasConcept C32546565 @default.
- W3208559439 hasConcept C33923547 @default.
- W3208559439 hasConcept C40636707 @default.
- W3208559439 hasConcept C500440979 @default.
- W3208559439 hasConcept C62520636 @default.
- W3208559439 hasConcept C63648874 @default.
- W3208559439 hasConcept C82217956 @default.
- W3208559439 hasConcept C9930424 @default.
- W3208559439 hasConceptScore W3208559439C114614502 @default.
- W3208559439 hasConceptScore W3208559439C115260700 @default.
- W3208559439 hasConceptScore W3208559439C121332964 @default.
- W3208559439 hasConceptScore W3208559439C147120987 @default.
- W3208559439 hasConceptScore W3208559439C185544564 @default.
- W3208559439 hasConceptScore W3208559439C185592680 @default.
- W3208559439 hasConceptScore W3208559439C192562407 @default.
- W3208559439 hasConceptScore W3208559439C26873012 @default.
- W3208559439 hasConceptScore W3208559439C2778870898 @default.
- W3208559439 hasConceptScore W3208559439C2779892579 @default.
- W3208559439 hasConceptScore W3208559439C32546565 @default.
- W3208559439 hasConceptScore W3208559439C33923547 @default.
- W3208559439 hasConceptScore W3208559439C40636707 @default.
- W3208559439 hasConceptScore W3208559439C500440979 @default.
- W3208559439 hasConceptScore W3208559439C62520636 @default.
- W3208559439 hasConceptScore W3208559439C63648874 @default.
- W3208559439 hasConceptScore W3208559439C82217956 @default.
- W3208559439 hasConceptScore W3208559439C9930424 @default.
- W3208559439 hasLocation W32085594391 @default.
- W3208559439 hasOpenAccess W3208559439 @default.
- W3208559439 hasPrimaryLocation W32085594391 @default.
- W3208559439 hasRelatedWork W117051697 @default.
- W3208559439 hasRelatedWork W1964877566 @default.
- W3208559439 hasRelatedWork W1981633478 @default.
- W3208559439 hasRelatedWork W1982589302 @default.
- W3208559439 hasRelatedWork W1992753863 @default.
- W3208559439 hasRelatedWork W2021154862 @default.
- W3208559439 hasRelatedWork W2022376009 @default.
- W3208559439 hasRelatedWork W2051164653 @default.
- W3208559439 hasRelatedWork W2061060930 @default.
- W3208559439 hasRelatedWork W2073033184 @default.
- W3208559439 hasRelatedWork W2094685954 @default.
- W3208559439 hasRelatedWork W2762852434 @default.
- W3208559439 hasRelatedWork W2765730755 @default.
- W3208559439 hasRelatedWork W2766054118 @default.
- W3208559439 hasRelatedWork W2766379463 @default.
- W3208559439 hasRelatedWork W2802239418 @default.
- W3208559439 hasRelatedWork W2953912122 @default.
- W3208559439 hasRelatedWork W3103470641 @default.
- W3208559439 hasRelatedWork W3150351372 @default.
- W3208559439 hasRelatedWork W3176598567 @default.
- W3208559439 isParatext "false" @default.
- W3208559439 isRetracted "false" @default.
- W3208559439 magId "3208559439" @default.
- W3208559439 workType "article" @default.