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@ARTICLE{Schmitz:186711,
author = {Schmitz, D. and Schmitz-Antoniak, C. and Warland, A. and
Darbandi, M. and Haldar, S. and Bhandary, S. and Eriksson,
O. and Sanyal, B. and Wende, H.},
title = {{T}he dipole moment of the spin density as a local
indicator for phase transitions},
journal = {Scientific reports},
volume = {4},
issn = {2045-2322},
address = {London},
publisher = {Nature Publishing Group},
reportid = {FZJ-2015-00783},
pages = {5760},
year = {2014},
abstract = {The intra-atomic magnetic dipole moment - frequently called
ÆTzæ term - plays an important role in thedetermination of
spin magnetic moments by x-ray absorption spectroscopy for
systems with nonsphericalspin density distributions. In this
work, we present the dipole moment as a sensitive monitor to
changes inthe electronic structure in the vicinity of a
phase transiton. In particular, we studied the dipole moment
atthe Fe21 and Fe31 sites of magnetite as an indicator for
the Verwey transition by a combination of x-raymagnetic
circular dichroism and density functional theory. Our
experimental results prove that there existsa local change
in the electronic structure at temperatures above the Verwey
transition correlated to theknown spin reorientation.
Furthermore, it is shown that measurement of the dipole
moment is a powerfultool to observe this transition in small
magnetite nanoparticles for which it is usually screened by
blockingeffects in classical magnetometry.},
cin = {PGI-6},
ddc = {000},
cid = {I:(DE-Juel1)PGI-6-20110106},
pnm = {422 - Spin-based and quantum information (POF2-422)},
pid = {G:(DE-HGF)POF2-422},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000339157000003},
pubmed = {pmid:25041757},
doi = {10.1038/srep05760},
url = {https://juser.fz-juelich.de/record/186711},
}