English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In order to propose a ferromagnet exhibiting highly spin-polarized transport,we theoretically analyzed the spin polarization ratio of the conductivity ofthe bulk Fe$_4$N with a perovskite type structure, in which N is located at thebody center position of fcc-Fe. The spin polarization ratio is defined by $P =(\sigma_\uparrow - \sigma_\downarrow) / (\sigma_\uparrow + \sigma_\downarrow)$, with $\sigma_{\uparrow(\downarrow)}$ being the conductivity at zerotemperature of the up spin (down spin). The conductivity is obtained by usingthe Kubo formula and the Slater-Koster tight binding model, where parametersare determined from the least-square fitting of the dispersion curves by thetight binding model to those by the first principles calculation. In thevicinity of the Fermi energy, $|P|$ takes almost 1.0, indicating perfectlyspin-polarized transport. In addition, by comparing Fe$_4$N to fcc-Fe(Fe$_4$N$_0$) in the ferromagnetic state with the equilibrium lattice constantof Fe$_4$N, it is shown that the non-magnetic atom N plays an important role inincreasing $|P|$.Comment: 4 pages, 2 figures, accepted for publication in Phys. Rev.

physical review. b, condensed matter and materials physics

Theoretical analysis of highly spin-polarized transport in the iron nitride<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mi mathvariant="normal">Fe</mml:mi><mml:mn>4</mml:mn></mml:msub><mml:mi mathvariant="normal">N</mml:mi></mml:mrow></mml:math>

Theoretical analysis of highly spin-polarized transport in the iron nitrideFe4N