Disorder-induced time effect in the antiferromagnetic domain state of Fe1+yTe

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F21%3A00546186" target="_blank" >RIV/68378271:_____/21:00546186 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/21:10433380

Výsledek na webu

<a href="https://doi.org/10.1016/j.jmmm.2021.168426" target="_blank" >https://doi.org/10.1016/j.jmmm.2021.168426</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jmmm.2021.168426" target="_blank" >10.1016/j.jmmm.2021.168426</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Disorder-induced time effect in the antiferromagnetic domain state of Fe1+yTe

Popis výsledku v původním jazyce

We report on temperature-dependent soft X-ray absorption spectroscopy (XAS) measurements utilizing linearly polarized synchrotron radiation to probe magnetic phase transitions in iron-rich Fe1+yTe (y ≈ 0.12). X-ray magnetic linear dichroism (XMLD) signals, which sense magnetic ordering processes at surfaces, start to increase monotonically below the N´eel temperature TN = 57 K. This increase is due to a progressive bicollinear antiferromagnetic (AFM) alignment of Fe spins of the monoclinic Fe1+yTe parent phase. This AFM alignment was achieved by a [100]-oriented biasing field favoring a single-domain state during cooling across TN. Our specific heat and magnetization measurements confirm the bulk character of this AFM phase transition. On longer time scales, however, we observe that the field-biased AFM state is highly unstable even at the lowest temperature of T = 3 K. After switching off the biasing field, the XMLD signal decays exponentially with a time constant τ = 1506 s.

Název v anglickém jazyce

Disorder-induced time effect in the antiferromagnetic domain state of Fe1+yTe

Popis výsledku anglicky

We report on temperature-dependent soft X-ray absorption spectroscopy (XAS) measurements utilizing linearly polarized synchrotron radiation to probe magnetic phase transitions in iron-rich Fe1+yTe (y ≈ 0.12). X-ray magnetic linear dichroism (XMLD) signals, which sense magnetic ordering processes at surfaces, start to increase monotonically below the N´eel temperature TN = 57 K. This increase is due to a progressive bicollinear antiferromagnetic (AFM) alignment of Fe spins of the monoclinic Fe1+yTe parent phase. This AFM alignment was achieved by a [100]-oriented biasing field favoring a single-domain state during cooling across TN. Our specific heat and magnetization measurements confirm the bulk character of this AFM phase transition. On longer time scales, however, we observe that the field-biased AFM state is highly unstable even at the lowest temperature of T = 3 K. After switching off the biasing field, the XMLD signal decays exponentially with a time constant τ = 1506 s.

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

<a href="/cs/project/GA19-13659S" target="_blank" >GA19-13659S: Rozhraní mezi tenkovrstvými chalkogenidy s obsahem železa a izolanty: vliv na strukturu, magnetismus a nekonvenční supravodivost.</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2021

Kód důvěrnosti údajů

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

Název periodika

Journal of Magnetism and Magnetic Materials

ISSN

0304-8853

e-ISSN

1873-4766

Svazek periodika

540

Číslo periodika v rámci svazku

Dec.

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

5

Strana od-do

168426

Kód UT WoS článku

000705010500002

EID výsledku v databázi Scopus

2-s2.0-85113583726