Sökning: id:"swepub:oai:DiVA.org:kth-40561" >
Magnetic percolatio...
Magnetic percolation in diluted magnetic semiconductors
-
- Bergqvist, Lars, 1976- (författare)
- Uppsala universitet,KTH,Tillämpad materialfysik,Teoretisk magnetism
-
- Eriksson, Olle (författare)
- Uppsala universitet,Teoretisk magnetism
-
Kudrnovsky, J (författare)
-
visa fler...
-
Drchal, V (författare)
-
- Korzhavyi, Pavel (författare)
- KTH,Materialvetenskap
-
Turek, I (författare)
-
visa färre...
-
(creator_code:org_t)
- 2004
- 2004
- Engelska.
-
Ingår i: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 93:13, s. 137202-
- Relaterad länk:
-
http://link.aps.org/...
-
visa fler...
-
https://urn.kb.se/re...
-
https://doi.org/10.1...
-
https://urn.kb.se/re...
-
visa färre...
Abstract
Ämnesord
Stäng
- We demonstrate that the magnetic properties of diluted magnetic semiconductors are dominated by short ranged interatomic exchange interactions that have a strong directional dependence. By combining first principles calculations of interatomic exchange interactions with a classical Heisenberg model and Monte Carlo simulations, we reproduce the observed critical temperatures of a broad range of diluted magnetic semiconductors. We also show that agreement between theory and experiment is obtained only when the magnetic atoms are randomly positioned. This suggests that the ordering of diluted magnetic semiconductors is heavily influenced by magnetic percolation, and that the measured critical temperatures should be very sensitive to details in the sample preparation, in agreement with observations.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
Hitta via bibliotek
Till lärosätets databas