Different universality classes of isostructural UTX compounds (T = Rh, Co, Co-0.Ru-98(0.02); X = Ga, Al)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F20%3A10421242" target="_blank" >RIV/00216208:11320/20:10421242 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LdfPuf0nkr" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=LdfPuf0nkr</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.102.224438" target="_blank" >10.1103/PhysRevB.102.224438</a>
Alternative languages
Result language
angličtina
Original language name
Different universality classes of isostructural UTX compounds (T = Rh, Co, Co-0.Ru-98(0.02); X = Ga, Al)
Original language description
Magnetization isotherms of the 5f-electron ferromagnets URhGa, UCoGa, and UC0.0.98Ru0.02Al were measured at temperatures in the vicinity of their Curie temperature to investigate the critical behavior near the ferromagnetic phase transition. These compounds adopt the layered hexagonal ZrNiAl-type structure and exhibit huge uniaxial magnetocrystalline anisotropy. The critical beta, gamma, and delta exponents were determined by analyzing Arrott-Noakes plots, Kouvel-Fisher plots, critical isotherms, scaling theory, and Widom scaling relations. The values obtained for URhGa and UCoGa can be explained by the results of the renormalization group theory for a two-dimensional (2D) Ising system with long-range interactions similar to URhAl reported by other investigators. On the other hand, the critical exponents determined for UCo0.98Ru0.02Al are characteristic of a three-dimensional (3D) Ising ferromagnet with short-range interactions suggested in previous studies also for the itinerant 5f -electron paramagnet UCoAl situated near a ferromagnetic transition. The change from the 2D to the 3D Ising system is related to the gradual delocalization of 5f electrons in the series of the URhGa, URhAl, and UCoGa to UCo0.98Ru0.02Al and UCoAl compounds and appears close to the strongly itinerant nonmagnetic limit. This indicates possible new phenomena that may be induced by the change of dimensionality in the vicinity of the quantum critical point.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2020
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 B
ISSN
2469-9950
e-ISSN
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Volume of the periodical
102
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
224438
UT code for WoS article
000604238300003
EID of the result in the Scopus database
2-s2.0-85099153929