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Description
| - We report the results of investigation of hightemperature superconductor (HTSC) LaFeO(1?x)FxAs at x = 0.15. We applied the XRD method, the measurement of the hysteresis curve and resistivity, as well as the Mössbauer measurements at the temperature range 4.2-300K.We show that in the given sample, owing to doping by fluorine, full suppression of antiferromagnetism is not accompanied by the rise of superconductivity. Instead, we observe a high-temperature (at T ? 40 K) Kondo effect, which indicates a strong coupling of electron's spins with the magnetic moments of impurities. We also find a correlation between the revealed high-temperature Kondo effect and the appearance of a quadrupole splitting in the Mössbauer spectra below 40 K. The revealed effects can shed light on the mechanism of superconductivity in the iron-containing HTSC.
- We report the results of investigation of hightemperature superconductor (HTSC) LaFeO(1?x)FxAs at x = 0.15. We applied the XRD method, the measurement of the hysteresis curve and resistivity, as well as the Mössbauer measurements at the temperature range 4.2-300K.We show that in the given sample, owing to doping by fluorine, full suppression of antiferromagnetism is not accompanied by the rise of superconductivity. Instead, we observe a high-temperature (at T ? 40 K) Kondo effect, which indicates a strong coupling of electron's spins with the magnetic moments of impurities. We also find a correlation between the revealed high-temperature Kondo effect and the appearance of a quadrupole splitting in the Mössbauer spectra below 40 K. The revealed effects can shed light on the mechanism of superconductivity in the iron-containing HTSC. (en)
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Title
| - Mössbauer investigation of superconductors LaFeO0.85F0.15As and high-temperature Kondo effect
- Mössbauer investigation of superconductors LaFeO0.85F0.15As and high-temperature Kondo effect (en)
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skos:prefLabel
| - Mössbauer investigation of superconductors LaFeO0.85F0.15As and high-temperature Kondo effect
- Mössbauer investigation of superconductors LaFeO0.85F0.15As and high-temperature Kondo effect (en)
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skos:notation
| - RIV/61989592:15310/14:33151453!RIV15-MSM-15310___
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http://linked.open...avai/riv/aktivita
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http://linked.open...avai/riv/aktivity
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http://linked.open...iv/cisloPeriodika
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http://linked.open...vai/riv/dodaniDat
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http://linked.open...aciTvurceVysledku
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http://linked.open.../riv/druhVysledku
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http://linked.open...iv/duvernostUdaju
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http://linked.open...titaPredkladatele
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http://linked.open...dnocenehoVysledku
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http://linked.open...ai/riv/idVysledku
| - RIV/61989592:15310/14:33151453
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http://linked.open...riv/jazykVysledku
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http://linked.open.../riv/klicovaSlova
| - Iron-containing superconductors, Mössbauer spectroscopy, Kondo effect (en)
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http://linked.open.../riv/klicoveSlovo
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http://linked.open...odStatuVydavatele
| - US - Spojené státy americké
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http://linked.open...ontrolniKodProRIV
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http://linked.open...i/riv/nazevZdroje
| - Journal of Superconductivity and Novel Magnetism
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http://linked.open...in/vavai/riv/obor
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http://linked.open...ichTvurcuVysledku
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http://linked.open...cetTvurcuVysledku
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http://linked.open...UplatneniVysledku
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http://linked.open...v/svazekPeriodika
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http://linked.open...iv/tvurceVysledku
| - Tuček, Jiří
- Mašláň, Miroslav
- Alduschenkov, A.
- Geraschenko, O.
- Kholmetskii, A.
- Lomonosov, V.
- Mahnach, L.
- Okunev, I.
- Yarman, T.
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http://linked.open...ain/vavai/riv/wos
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issn
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number of pages
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http://bibframe.org/vocab/doi
| - 10.1007/s10948-014-2531-2
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http://localhost/t...ganizacniJednotka
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