Origin of negative resistivity slope in U-based ferromagnets

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Origin of negative resistivity slope in U-based ferromagnets

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Origin of negative resistivity slope in U-based ferromagnets

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Physica B: Condensed Matter

ISSN

0921-4526

e-ISSN

—

Svazek periodika

536

Číslo periodika v rámci svazku

květen

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

527-531

Kód UT WoS článku

000431075600122

EID výsledku v databázi Scopus

2-s2.0-85032381766