Origin of negative resistivity slope in U-based ferromagnets

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10380454" target="_blank" >RIV/00216208:11320/18:10380454 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.physb.2017.10.084" target="_blank" >https://doi.org/10.1016/j.physb.2017.10.084</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.physb.2017.10.084" target="_blank" >10.1016/j.physb.2017.10.084</a>

Result language
angličtina
Original language name
Origin of negative resistivity slope in U-based ferromagnets
Original language description
Ultra-nanocrystalline UH3-based ferromagnets with T-c approximate to 200 K exhibit a flat temperature dependence of electrical resistivity with a negative slope both in the ferromagnetic and paramagnetic range. The ordered state with randomness on atomic scale, equivalent to a non-collinear ferromagnetism, can be affected by magnetic field, supressing the static magnetic disorder, which reduces the resistivity and removes the negative slope. It is deduced that the dynamic magnetic disorder in the paramagnetic state can be conceived as continuation of the static disorder in the ordered state. The experiments, performed for (UH3)(0.78)Mo0.12Ti0.10, demonstrate that the negative resistivity slope, observed for numerous U-based intermetallics in the paramagnetic state, can be due to the strong disorder effect on resistivity. The resulting weak localization, as a quantum interference effect which increases resistivity, is gradually suppressed by enhanced temperature, contributing by electron -phonon scattering, inelastic in nature and removing the quantum coherence.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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