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@ARTICLE{Geselbracht:280627,
author = {Geselbracht, P. and Faulhaber, E. and Rotter, M. and
Schmalzl, K. and Quintero-Castro, D. and Stockert, O. and
Loewenhaupt, M. and Schneidewind, A.},
title = {{L}ow-energy {M}agnetic {E}xcitations of {C}e{C}u2{G}e2
{I}nvestigated by {I}nelastic {N}eutron {S}cattering},
journal = {Physics procedia},
volume = {75},
issn = {1875-3892},
address = {Amsterdam [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2016-00394},
pages = {83 - 90},
year = {2015},
abstract = {CeCu2Ge2, the magnetic counterpart of the heavy-fermion
superconductor CeCu2Si2, exhibits an antiferromagnetic
ground state below TN = 4.15 K with an incommensurate
propagation vector of τ = (0.28 0.28 0.54). The magnetism
is determined by local Ce 4f-moments and the ordering RKKY
interaction as well as the onset of Kondo screening by
conduction electrons. Tuning the energy scale of the Kondo
effect and RKKY interaction towards enhanced Kondo screening
may result in quantum critical phenomena at low temperature.
While the existence of quantum critical phenomena induced by
external pressure or chemical substitution is well known,
the situation is less clear for magnetic field tuning. We
will present an investigation of the spin excitation
spectrum in magnetic field by inelastic neutron scattering
and compare it to mean-field (McPhase) simulations of the
antiferromagnetic spin wave excitation spectrum. We argue
that our data can be described by the presence of spin wave
excitations.},
cin = {JCNS-2 / PGI-4 / JARA-FIT / JCNS-ILL / JCNS (München) ;
Jülich Centre for Neutron Science JCNS (München) ;
JCNS-FRM-II},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-2-20110106 / I:(DE-Juel1)PGI-4-20110106 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)JCNS-ILL-20110128 /
I:(DE-Juel1)JCNS-FRM-II-20110218},
pnm = {144 - Controlling Collective States (POF3-144) / 524 -
Controlling Collective States (POF3-524) / 6212 - Quantum
Condensed Matter: Magnetism, Superconductivity (POF3-621) /
6213 - Materials and Processes for Energy and Transport
Technologies (POF3-621) / 6G4 - Jülich Centre for Neutron
Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-144 / G:(DE-HGF)POF3-524 /
G:(DE-HGF)POF3-6212 / G:(DE-HGF)POF3-6213 /
G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)PANDA-20140101},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000381129300012},
doi = {10.1016/j.phpro.2015.12.191},
url = {https://juser.fz-juelich.de/record/280627},
}