Issue |
Europhys. Lett.
Volume 68, Number 2, October 2004
|
|
---|---|---|
Page(s) | 289 - 295 | |
Section | Condensed matter: electronic structure, electrical, magnetic, and optical properties | |
DOI | https://doi.org/10.1209/epl/i2004-10183-8 | |
Published online | 01 October 2004 |
Spin transition in
investigated
by resonant soft X-ray emission spectroscopy
1
Department of Physics, Uppsala University - P.O. Box 530, S-751 21 Uppsala, Sweden
2
Department of Chemistry, University of Oslo - P.O. Box 1033 Blindern N-0315 Oslo, Norway
Received:
10
March
2004
Accepted:
12
August
2004
The spin transition in is investigated by
temperature-dependent resonant soft X-ray emission spectroscopy
near the
absorption edges. This element-specific
technique is more bulk sensitive with respect to the
temperature-induced spin state of the
ions in
than other high-energy spectroscopic methods. The
spin transition is interpreted and discussed with ab
initio density-functional theory within the fixed-spin moment
method, which is found to yield consistent spectral functions to
the experimental data. The spectral changes for
as
a function of temperature suggest a change in spin state as the
temperature is raised from 85 to 300
, while the system
remains in the same spin state as the temperature is further
increased to 510
.
PACS: 78.70.En – X-ray emission spectra and fluorescence / 71.15.Mb – Density functional theory, local density approximation, gradient and other corrections / 68.35.Rh – Phase transitions and critical phenomena
© EDP Sciences, 2004
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