Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe0.97Cr0.03)(2)(As1-xPx)(2)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F19%3A10398912" target="_blank" >RIV/00216208:11320/19:10398912 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cyc1Qj6.vv" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=cyc1Qj6.vv</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevLett.122.037001" target="_blank" >10.1103/PhysRevLett.122.037001</a>
Alternative languages
Result language
angličtina
Original language name
Unconventional Antiferromagnetic Quantum Critical Point in Ba(Fe0.97Cr0.03)(2)(As1-xPx)(2)
Original language description
We have systematically studied physical properties of Ba(Fe0.97Cr0.03)(2)(As1-xPx)(2), where superconductivity in BaFe2(As1-xPx)(2) is fully suppressed by just 3% of Cr substitution of Fe. A quantum critical point is revealed at x similar to 0.42, where non-Fermi-liquid behaviors similar to those in BaFe2(As1-xPx)(2) are observed. Neutron diffraction and inelastic neutron scattering measurements suggest that the quantum critical point is associated with the antiferromagnetic order, which is not of conventional spin-density-wave type as evidenced by the omega/T scaling of spin excitations. On the other hand, no divergence of low-temperature nematic susceptibility is observed when x is 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 quantum critical fluctuations, which cast doubts on the role of nematic fluctuations played in the normal-state properties in iron-based superconductors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Physical Review Letters
ISSN
0031-9007
e-ISSN
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Volume of the periodical
122
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
037001
UT code for WoS article
000456782500010
EID of the result in the Scopus database
2-s2.0-85060587220