Ferroquadrupolar ordering in a magnetically ordered state in ErNiAl
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00557519" target="_blank" >RIV/68378271:_____/22:00557519 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevB.105.165147" target="_blank" >https://doi.org/10.1103/PhysRevB.105.165147</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.105.165147" target="_blank" >10.1103/PhysRevB.105.165147</a>
Alternative languages
Result language
angličtina
Original language name
Ferroquadrupolar ordering in a magnetically ordered state in ErNiAl
Original language description
We conducted ultrasonic measurements to clarify whether a phase transition exists in hexagonal compound ErNiAl below the antiferromagnetic transition at 6 K. We discovered a significant elastic softening of the transverse modulus, C66, accompanied by a significant ultrasonic attenuation toward TQ=3.4 K, which is the temperature of a sharp downward peak in other moduli, indicating a phase transition at TQ. The crystal field analysis reveals that the softening of C66 below 80 K is due to an interlevel Oxy-type quadrupole interaction with a positive quadrupole-quadrupole coupling constant between the ground and excited Kramers doublets. A spontaneous expectation value of Oxy emerges at TQ in our crystal field model with the mean-field approximation. No quadrupolar ordering occurs in a magnetically ordered state because the degeneracy of quadrupoles is lifted by an internal magnetic field of magnetic ordering.
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
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
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
2469-9969
Volume of the periodical
105
Issue of the periodical within the volume
16
Country of publishing house
US - UNITED STATES
Number of pages
6
Pages from-to
165147
UT code for WoS article
000805006000004
EID of the result in the Scopus database
2-s2.0-85129378610