Disorder-induced time effect in the antiferromagnetic domain state of Fe.sub.1+y./sub.Te

Fikáček, Jan; Warmuth, J.; Arnold, F.; Piamonteze, C.; Mao, Z.; Holý, V.; Hofmann, P.; Bremholm, M.; Wiebe, J.; Wiesendanger, R.; Honolka, Jan

doi:https://dx.doi.org/10.1016/j.jmmm.2021.168426

Počet záznamů: 1

Disorder-induced time effect in the antiferromagnetic domain state of Fe.sub.1+y./sub.Te

1.

SYSNO ASEP	0546186
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Článek ve WOS
Název	Disorder-induced time effect in the antiferromagnetic domain state of Fe_1+yTe
Tvůrce(i)	Fikáček, Jan (FZU-D) Warmuth, J. (DE) Arnold, F. (DK) Piamonteze, C. (CH) Mao, Z. (US) Holý, V. (CZ) Hofmann, P. (DK) Bremholm, M. (DK) Wiebe, J. (DE) Wiesendanger, R. (DE) Honolka, Jan (FZU-D)_{RID, ORCID}
Celkový počet autorů	11
Číslo článku	168426
Zdroj.dok.	Journal of Magnetism and Magnetic Materials. - : Elsevier - ISSN 0304-8853 Roč. 540, Dec. (2021)
Poč.str.	5 s.
Jazyk dok.	eng - angličtina
Země vyd.	NL - Nizozemsko
Klíč. slova	iron chalcogenides ; antiferromagnetism ; X-ray magnetic linear dichroism ; domain structure
Vědní obor RIV	BM - Fyzika pevných látek a magnetismus
Obor OECD	Condensed matter physics (including formerly solid state physics, supercond.)
CEP	GA19-13659S GA ČR - Grantová agentura ČR
Způsob publikování	Omezený přístup
Institucionální podpora	FZU-D - RVO:68378271
UT WOS	000705010500002
EID SCOPUS	85113583726
DOI	10.1016/j.jmmm.2021.168426
Anotace	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.
Pracoviště	Fyzikální ústav
Kontakt	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Rok sběru	2022
Elektronická adresa	https://doi.org/10.1016/j.jmmm.2021.168426

Počet záznamů: 1