Year: 2001
Type: article
Abstract: T h erm oelectr ic p ow er w as studied in the temp erature ran ge 1 00 ç T ç 300 K in 0.3À 1 ñ m thic k ferromagnetic Ga 1 À x Mn x A s epita xial layers ( 0 : 01 5 ç x ç 0 :0 6 ) in order to determine F ermi energy E F and carrier concentration p .F or 0 :015 ç x ç 0 : 05 , at T = 2 73 K w e Ùnd E F = 275Ï 50 me V and p = (2 : 5 Ï 0 :5) È 10 2 0 cm À 3 (approximately Mn content indep endent ).F or x = 0 : 06 , the F ermi energy decreases by about 100 meV with the corresp onding reduction of hole concentration to p = 1 :2 È 10 20 cm À 3 .A t T = 120 K , these parameters vary betw een E F = 380 meV and p = 3 : 5 È 10 20 cm À 3 forx = 0 : 015 to E F = 110 meV and p = 5 È 10 1 9 cm À 3 for x = 0 :06 .
Source: Acta Physica Polonica A
Institutions: Institute of Physics, Polish Academy of Sciences, Lund University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W1615574611