Intrinsic spin currents in bulk noncentrosymmetric ferromagnets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F24%3A00600190" target="_blank" >RIV/68081723:_____/24:00600190 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S1293255824002929?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S1293255824002929?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.solidstatesciences.2024.107727" target="_blank" >10.1016/j.solidstatesciences.2024.107727</a>

Result language
angličtina
Original language name
Intrinsic spin currents in bulk noncentrosymmetric ferromagnets
Original language description
Intrinsic spin currents are encountered in noncentrosymmetric crystals without any external electric fields, these currents are caused by spin–orbit interaction. In this paper, various theoretical aspects of this phenomenon in bulk ferromagnets are studied by using group theory, perturbation expansion, and calculations for model and real systems. The group-theoretical analysis of the spin-current tensor shows that the absence of space-inversion symmetry is not a sufficient condition for appearance of the intrinsic spin currents. The perturbation expansion proves that in the regime of exchange splitting dominating over spin–orbit interaction, the spin polarization of the intrinsic currents is nearly perpendicular to the direction of magnetization. First-principles calculations are carried out for NiMnSb and CoMnFeSi ferromagnetic compounds, both featured by a tetrahedral crystallographic point group. The dependence of the spin-current tensor on the direction of magnetization is approximated by a simple quadratic formula containing two constants, the relative error of this approximation is found as small as a few percent for both compounds.
Czech name
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Czech description
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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.)

Project
<a href="/en/project/GA23-04746S" target="_blank" >GA23-04746S: Theory of magnetic systems in electric and electromagnetic fields</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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