Sammanfattning
Recently, a great deal of effort has been focused on
developing the so called “fully unconstrained” approach
to noncollinear magnetism. This approach allows the
magnetization density within a material to be calculated
as a continuous vector variable of position, as opposed to
using the atomic moment approximation (AMA) where a
fixed quantization direction is assumed for a volume filling sphere surrounding each atomic site, i.e., the
constrained approach. In this paper a number of
applications of the method are reviewed. Initially, only
small clusters of Iron (Fe) and Chromium (Cr) atoms
were studied which nicely illustrated some possible
noncollinear magnetic arrangements. However, later
research has been applied to triangular free-standing Cr
and Manganese (Mn) monolayers and overlayers on Cu
substrates. Finally, noncollinear magnetism has been
investigated within the different phases of Mn, including
the complex α-Mn phase, which has been shown
experimentally to have a noncollinear magnetic structure.
developing the so called “fully unconstrained” approach
to noncollinear magnetism. This approach allows the
magnetization density within a material to be calculated
as a continuous vector variable of position, as opposed to
using the atomic moment approximation (AMA) where a
fixed quantization direction is assumed for a volume filling sphere surrounding each atomic site, i.e., the
constrained approach. In this paper a number of
applications of the method are reviewed. Initially, only
small clusters of Iron (Fe) and Chromium (Cr) atoms
were studied which nicely illustrated some possible
noncollinear magnetic arrangements. However, later
research has been applied to triangular free-standing Cr
and Manganese (Mn) monolayers and overlayers on Cu
substrates. Finally, noncollinear magnetism has been
investigated within the different phases of Mn, including
the complex α-Mn phase, which has been shown
experimentally to have a noncollinear magnetic structure.
| Originalspråk | engelska |
|---|---|
| Sidor | 1-6 |
| Volym | 4 |
| Specialistpublikation | Annals of the Marie Curie Fellowship Association |
| Förlag | Marie Curie Fellowship Association |
| Status | Published - 2006 |
Ämnesklassifikation (UKÄ)
- Astronomi, astrofysik och kosmologi