Atomic disorder and Berry phase driven anomalous Hall effect in a Co2FeAl Heusler compound
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10440614" target="_blank" >RIV/00216208:11320/22:10440614 - isvavai.cz</a>
Result on the web
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ze1OG_sta" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=ze1OG_sta</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevB.105.035124" target="_blank" >10.1103/PhysRevB.105.035124</a>
Alternative languages
Result language
angličtina
Original language name
Atomic disorder and Berry phase driven anomalous Hall effect in a Co2FeAl Heusler compound
Original language description
Co-2-based Heusler compounds are promising materials for spintronics applications due to their high Curie temperature, large spin polarization, large magnetization density, and exotic transport properties. In the present paper, we report the anomalous Hall effect (AHE) in a polycrystalline Co2FeAl Heusler compound using combined experimental and theoretical studies. The Rietveld analysis of high-resolution synchrotron x-ray diffraction data reveals a large degree (similar to 50%) of antisite disorder between Fe and Al atoms. The analysis of anomalous transport data provides the experimental anomalous Hall conductivity (AHC) about 227 S/cm at 2 K with an intrinsic contribution of 155 S/cm, which has nearly constant variation with temperature. The detailed scaling analysis of anomalous Hall resistivity suggests that the AHE in Co2FeAl is governed by the Berry phase driven intrinsic mechanism. Our theoretical calculations reveal that the disorder present in the Co2FeAl compound enhances the Berry curvature induced intrinsic AHC.
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
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
3
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
035124
UT code for WoS article
000747564500008
EID of the result in the Scopus database
2-s2.0-85123749838