Crystal field driven magnetoelectricity in the triangular quantum magnet CeMgAl11O19
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F25%3A00644502" target="_blank" >RIV/68378271:_____/25:00644502 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11320/25:10507516
Result on the web
<a href="https://hdl.handle.net/11104/0374475" target="_blank" >https://hdl.handle.net/11104/0374475</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/c3hd-pwby" target="_blank" >10.1103/c3hd-pwby</a>
Alternative languages
Result language
angličtina
Original language name
Crystal field driven magnetoelectricity in the triangular quantum magnet CeMgAl11O19
Original language description
We report dielectric and magnetoelectric studies of single-crystalline CeMgAl11O19, a Kramers triangular magnet embedded in a polarizable hexaaluminate lattice. In zeromagnetic field, the permittivity ε(T) follows the Barrett law of a quantum paraelectric down to ∼25K, below which a broad minimum develops near 3K without evidence of static ferroelectric or magnetic order. Application of magnetic fields up to 9 T shifts this minimum to higher temperatures and broadens it, evidencing a tunable magnetoelectric response. The magnetoelectric coupling was characterized using results from magnetization measurements. The anomaly temperature T∗, extracted from the local minimum of ε(T), exhibits a linear dependence on the squared magnetization M2, consistent with the biquadratic magnetoelectric coupling allowed in centrosymmetric systems. This magnetoelectric effect, mediated by spin-orbit-entangled Kramers doublets interacting with a frustrated antipolar liquid, establishes CeMgAl11O19 as a prototype for exploring quantum magnetoelectricity in frustrated systems.
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
2025
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
112
Issue of the periodical within the volume
22
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
224431
UT code for WoS article
001651613500004
EID of the result in the Scopus database
2-s2.0-105025432659