Magnetism in superconducting EuFe2As1.4P 0.6 single crystals studied by local probes

J. Munevar; H. Micklitz; M. Alzamora; C. Argüello; T. Goko; F. L. Ning; T. Munsie; T. J. Williams; A. A. Aczel; G. M. Luke; G. F. Chen; W. Yu; Y. J. Uemura; E. Baggio-Saitovitch

doi:10.1016/j.ssc.2014.02.001

Magnetism in superconducting EuFe₂As_1.4P _0.6 single crystals studied by local probes

J. Munevar, H. Micklitz, M. Alzamora, C. Argüello, T. Goko, F. L. Ning, T. Munsie, T. J. Williams, A. A. Aczel, G. M. Luke, G. F. Chen, W. Yu, Y. J. Uemura, E. Baggio-Saitovitch

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Abstract

We have studied the magnetism in superconducting single crystals of EuFe₂As_1.4P_0.6 by using the local probe techniques of zero-field muon spin rotation/relaxation and ¹⁵¹Eu/ ⁵⁷Fe Mössbauer spectroscopy. All of these measurements reveal magnetic hyperfine fields below the magnetic ordering temperature ^TM=18K of the Eu²⁺ moments. The analysis of the data shows that there is a coexistence of antiferromagnetism, resulting from Eu ²⁺ moments ordered along the crystallographic c-axis, and superconductivity below ^TSC≈ 10 K. We find indications for a change in the dynamics of the small Fe magnetic moments (∼0.07 ^μB) at T^*≲15K that may be triggering the onset of superconductivity: below T^* the Fe magnetic moments seem to be "frozen" within the ab-plane.

Original language	English
Pages (from-to)	18-22
Number of pages	5
Journal	Solid State Communications
Volume	187
DOIs	https://doi.org/10.1016/j.ssc.2014.02.001
State	Published - Jun 2014

Keywords

A. Iron pnictides
C. Mössbauer spectroscopy
C. μSR
D. Superconductivity

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10.1016/j.ssc.2014.02.001

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Munevar, J., Micklitz, H., Alzamora, M., Argüello, C., Goko, T., Ning, F. L., Munsie, T., Williams, T. J., Aczel, A. A., Luke, G. M., Chen, G. F., Yu, W., Uemura, Y. J., & Baggio-Saitovitch, E. (2014). Magnetism in superconducting EuFe₂As_1.4P _0.6 single crystals studied by local probes. Solid State Communications, 187, 18-22. https://doi.org/10.1016/j.ssc.2014.02.001

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title = "Magnetism in superconducting EuFe2As1.4P 0.6 single crystals studied by local probes",

abstract = "We have studied the magnetism in superconducting single crystals of EuFe2As1.4P0.6 by using the local probe techniques of zero-field muon spin rotation/relaxation and 151Eu/ 57Fe M{\"o}ssbauer spectroscopy. All of these measurements reveal magnetic hyperfine fields below the magnetic ordering temperature TM=18K of the Eu2+ moments. The analysis of the data shows that there is a coexistence of antiferromagnetism, resulting from Eu 2+ moments ordered along the crystallographic c-axis, and superconductivity below TSC≈ 10 K. We find indications for a change in the dynamics of the small Fe magnetic moments (∼0.07 μB) at T*≲15K that may be triggering the onset of superconductivity: below T* the Fe magnetic moments seem to be {"}frozen{"} within the ab-plane.",

keywords = "A. Iron pnictides, C. M{\"o}ssbauer spectroscopy, C. μSR, D. Superconductivity",

author = "J. Munevar and H. Micklitz and M. Alzamora and C. Arg{\"u}ello and T. Goko and Ning, {F. L.} and T. Munsie and Williams, {T. J.} and Aczel, {A. A.} and Luke, {G. M.} and Chen, {G. F.} and W. Yu and Uemura, {Y. J.} and E. Baggio-Saitovitch",

year = "2014",

month = jun,

doi = "10.1016/j.ssc.2014.02.001",

language = "English",

volume = "187",

pages = "18--22",

journal = "Solid State Communications",

issn = "0038-1098",

publisher = "Elsevier",

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T1 - Magnetism in superconducting EuFe2As1.4P 0.6 single crystals studied by local probes

AU - Munevar, J.

AU - Micklitz, H.

AU - Alzamora, M.

AU - Argüello, C.

AU - Goko, T.

AU - Ning, F. L.

AU - Munsie, T.

AU - Williams, T. J.

AU - Aczel, A. A.

AU - Luke, G. M.

AU - Chen, G. F.

AU - Yu, W.

AU - Uemura, Y. J.

AU - Baggio-Saitovitch, E.

PY - 2014/6

Y1 - 2014/6

N2 - We have studied the magnetism in superconducting single crystals of EuFe2As1.4P0.6 by using the local probe techniques of zero-field muon spin rotation/relaxation and 151Eu/ 57Fe Mössbauer spectroscopy. All of these measurements reveal magnetic hyperfine fields below the magnetic ordering temperature TM=18K of the Eu2+ moments. The analysis of the data shows that there is a coexistence of antiferromagnetism, resulting from Eu 2+ moments ordered along the crystallographic c-axis, and superconductivity below TSC≈ 10 K. We find indications for a change in the dynamics of the small Fe magnetic moments (∼0.07 μB) at T*≲15K that may be triggering the onset of superconductivity: below T* the Fe magnetic moments seem to be "frozen" within the ab-plane.

AB - We have studied the magnetism in superconducting single crystals of EuFe2As1.4P0.6 by using the local probe techniques of zero-field muon spin rotation/relaxation and 151Eu/ 57Fe Mössbauer spectroscopy. All of these measurements reveal magnetic hyperfine fields below the magnetic ordering temperature TM=18K of the Eu2+ moments. The analysis of the data shows that there is a coexistence of antiferromagnetism, resulting from Eu 2+ moments ordered along the crystallographic c-axis, and superconductivity below TSC≈ 10 K. We find indications for a change in the dynamics of the small Fe magnetic moments (∼0.07 μB) at T*≲15K that may be triggering the onset of superconductivity: below T* the Fe magnetic moments seem to be "frozen" within the ab-plane.

KW - A. Iron pnictides

KW - C. Mössbauer spectroscopy

KW - C. μSR

KW - D. Superconductivity

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U2 - 10.1016/j.ssc.2014.02.001

DO - 10.1016/j.ssc.2014.02.001

M3 - Article

AN - SCOPUS:84897683215

SN - 0038-1098

VL - 187

SP - 18

EP - 22

JO - Solid State Communications

JF - Solid State Communications

ER -

Magnetism in superconducting EuFe₂As_1.4P _0.6 single crystals studied by local probes

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Keywords

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