Interplay of magnetism and superconductivity in EuFe2(As1—xPx)2 single crystals probed by muon spin rotation and

Goltz T, Kamusella S, Jeevan HS, Gegenwart P, Luetkens H, Materne P, Spehling J, Sarkar R & Klauss H-H
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Goltz, T., Kamusella, S., Jeevan, H. S., Gegenwart, P., Luetkens, H., Materne, P., … Klauss, H. H. (2014). Interplay of magnetism and superconductivity in EuFe2(As1—xPx)2 single crystals probed by muon spin rotation and 57Fe Mössbauer spectroscopy. In Z. Salman, A. Amato, H. Luetkens, & E. Morenzoni (Eds.), Journal of physics: conference series: Vol. 551. 13th international conference on muon spin rotation, relaxation and resonance (μSR 2014) (p. 012025 (6 pp.). https://doi.org/10.1088/1742-6596/551/1/012025
https://www.dora.lib4ri.ch/psi/islandora/object/psi:22300

We present our results of a local probe study on EuFe2(As1—xPx)2 single crystals with x=0.13, 0.19 and 0.28 by means of muon spin rotation and 57Fe Mössbauer spectroscopy. We focus our discussion on the sample with x=0.19 viz. at the optimal substitution level, where bulk superconductivity (TSC = 28 K) sets in above static europium order (TEu = 20 K) but well below the onset of the iron antiferromagnetic (AFM) transition (~100 K). We find enhanced spin dynamics in the Fe sublattice closely above TSC and propose that these are related to enhanced Eu fluctuations due to the evident coupling of both sublattices observed in our experiments.

Details
Publication Type

Proceedings Paper

Title

Interplay of magnetism and superconductivity in EuFe2(As1—xPx)2 single crystals probed by muon spin rotation and 57Fe Mössbauer spectroscopy

Author(s)

Goltz, T.

Kamusella, S.

Jeevan, H.S.

Gegenwart, P.

Luetkens, H. (3501 Bulk-µSR)

Materne, P.

Spehling, J.

Sarkar, R.

Klauss, H.-H.

Conference Proceedings

13th international conference on muon spin rotation, relaxation and resonance (μSR 2014)

Editor(s)

Salman, Z. (editor)
Amato, A. (editor)
Luetkens, H. (editor)
Morenzoni, E. (editor)

Series Title

Journal of physics: conference series

Publisher

IOP Publishing

Publication Place

Bristol

Volume

551

Issue

1

Start Page

012025 (6 pp.)

Publication Year

2014

Conference

13th international conference on muon spin rotation, relaxation and resonance (μSR 2014)

Conference Place

Grindelwald, Switzerland

Conference Date

June 1–6, 2014

Peer Review

Yes

Facility

SmuS

Beamline

GPS

Collection

PSI Publications