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@ARTICLE{Marino:589256,
author = {Marino, Andrea and Christovam, Denise S. and Chang, Chun-Fu
and Falke, Johannes and Kuo, Chang-Yang and Wu, Chi-Nan and
Sundermann, Martin and Amorese, Andrea and Gretarsson,
Hlynur and Lee-Wong, Eric and Moir, Camilla M. and Deng,
Yuhang and Maple, M. Brian and Thalmeier, Peter and Tjeng,
Liu Hao and Severing, Andrea},
title = {{F}e substitution in {UR}u$_2${S}i$_2$ : {S}inglet
magnetism in an extended {D}oniach phase diagram},
journal = {Physical review / B},
volume = {108},
number = {8},
issn = {2469-9950},
address = {Woodbury, NY},
publisher = {Inst.},
reportid = {PUBDB-2023-05121},
pages = {085128},
year = {2023},
abstract = {The application of pressure as well as the successive
substitution of Ru with Fe in the hidden order (HO) compound
URu$_2$Si$_2$ leads to the formation of the large-moment
antiferromagnetic phase. Here, we investigate the
substitution series URu$_{2−x}$FexSi$_2$ from x=0.0 to 2.0
by U 4f core-level photoelectron spectroscopy and observe
nonmonotonic changes in the spectra. The initial increase
and subsequent decrease in the spectral weight of the 4f
core-level satellite with increasing x stands for a
nonmonotonic 5f filling across the substitution series. The
competition of chemical pressure and increase in the density
of states at the Fermi energy, both due to substitution of
Ru with Fe, can explain such behavior. An extended Doniach
phase diagram including the x dependence of the density of
states is proposed. Also in URu$_{2−x}$FexSi$_2$ the
ground state is a singlet or quasidoublet state consisting
of two singlets. Hence, the formation of magnetic order in
the URu$_{2−x}$FexSi$_2$ substitution series must be
explained within a singlet magnetism model.},
cin = {DOOR ; HAS-User / FS-PETRA-S},
ddc = {530},
cid = {I:(DE-H253)HAS-User-20120731 /
I:(DE-H253)FS-PETRA-S-20210408},
pnm = {632 - Materials – Quantum, Complex and Functional
Materials (POF4-632) / 6G3 - PETRA III (DESY) (POF4-6G3) /
DFG project 387555779 - Von versteckter bis
antiferromagnetischer Ordnung mit großem Moment in URu2Si2:
eine Röntgenstrahluntersuchung der 5f Besetzung und
Wellenfunktionssymmetrie. (387555779)},
pid = {G:(DE-HGF)POF4-632 / G:(DE-HGF)POF4-6G3 /
G:(GEPRIS)387555779},
experiment = {EXP:(DE-H253)P-P01-20150101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:001105971400003},
doi = {10.1103/PhysRevB.108.085128},
url = {https://bib-pubdb1.desy.de/record/589256},
}