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@ARTICLE{Zhang:862500,
author = {Zhang, Wenliang and Wei, Yuan and Xie, Tao and Liu, Zhaoyu
and Gong, Dongliang and Ma, Xiaoyan and Hu, Ding and
Čermák, Petr and Schneidewind, Astrid and Tucker, Gregory
and Meng, Siqin and Huesges, Zita and Lu, Zhilun and Song,
Jianming and Luo, Wei and Xu, Liangcai and Zhu, Zengwei and
Yin, Xunqing and Li, Hai-Feng and Yang, Yi-feng and Luo,
Huiqian and Li, Shiliang},
title = {{U}nconventional {A}ntiferromagnetic {Q}uantum {C}ritical
{P}oint in
{B}a({F}e$_{0.97}${C}r$_{0.03}$)$_2$({A}s$_{1−x}${P}$_x$)$_2$},
journal = {Physical review letters},
volume = {122},
number = {3},
issn = {1079-7114},
address = {College Park, Md.},
publisher = {APS},
reportid = {FZJ-2019-02806},
pages = {037001},
year = {2019},
abstract = {We have systematically studied physical properties of
BaðFe0.97Cr0.03Þ2ðAs1−xPxÞ2, where super-conductivity
in BaFe2ðAs1−xPxÞ2is fully suppressed by just $3\%$ of
Cr substitution of Fe. A quantum criticalpoint is revealed
atx∼0.42, where non-Fermi-liquid behaviors similar to
those in BaFe2ðAs1−xPxÞ2areobserved. Neutron diffraction
and inelastic neutron scattering measurements suggest that
the quantumcritical point is associated with the
antiferromagnetic order, which is not of conventional
spin-density-wavetype as evidenced by theω=Tscaling of spin
excitations. On the other hand, no divergence of
low-temperature nematic susceptibility is observed whenxis
decreased to 0.42 from higher doping level,demonstrating
that there are no nematic quantum critical fluctuations. Our
results suggest that non-Fermi-liquid behaviors in
iron-based superconductors can be solely resulted from the
antiferromagnetic quantumcritical fluctuations, which cast
doubts on the role of nematic fluctuations played in the
normal-stateproperties in iron-based superconductors.},
cin = {JCNS-FRM-II / JCNS-2 / MLZ},
ddc = {530},
cid = {I:(DE-Juel1)JCNS-FRM-II-20110218 /
I:(DE-Juel1)JCNS-2-20110106 / I:(DE-588b)4597118-3},
pnm = {6G15 - FRM II / MLZ (POF3-6G15) / 6G4 - Jülich Centre for
Neutron Research (JCNS) (POF3-623)},
pid = {G:(DE-HGF)POF3-6G15 / G:(DE-HGF)POF3-6G4},
experiment = {EXP:(DE-MLZ)PANDA-20140101},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30735415},
UT = {WOS:000456782500010},
doi = {10.1103/PhysRevLett.122.037001},
url = {https://juser.fz-juelich.de/record/862500},
}