Nanoscale-textured superconductivity in Ru-substituted BaFe 2As 2: A challenge to a universal phase diagram for the pnictides

Y. Laplace; J. Bobroff; V. Brouet; G. Collin; F. Rullier-Albenque; D. Colson; A. Forget

doi:10.1103/PhysRevB.86.020510

Nanoscale-textured superconductivity in Ru-substituted BaFe ₂As ₂: A challenge to a universal phase diagram for the pnictides

Y. Laplace
, J. Bobroff
, V. Brouet
, G. Collin
, F. Rullier-Albenque
, D. Colson
, A. Forget

Laboratoire de Physique des Solides
Université Paris-Saclay

Research output: Contribution to journal › Article › peer-review

Abstract

75As NMR experiments were performed in Ba(Fe _1- _xRu _x) ₂As ₂ for x = 0%-80%. Magnetic fractions and NMR line shapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) order inhomogeneously with a magnetic moment distributed from 0.9μ _B to 0μ _B. Superconductivity emerges at intermediate Ru doping and coexists with AF order only in the regions where moments are smaller than ∼0.3μ _B, resulting in an original nanoscale texture. This situation contrasts with that of Co substitution, challenging the apparent universality of the phase diagram in Fe-based superconductors.

Original language	English
Article number	020510
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	86
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevB.86.020510
Publication status	Published - 30 Jul 2012
Externally published	Yes

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10.1103/PhysRevB.86.020510

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title = "Nanoscale-textured superconductivity in Ru-substituted BaFe 2As 2: A challenge to a universal phase diagram for the pnictides",

abstract = "75As NMR experiments were performed in Ba(Fe 1- xRu x) 2As 2 for x = 0\%-80\%. Magnetic fractions and NMR line shapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) order inhomogeneously with a magnetic moment distributed from 0.9μ B to 0μ B. Superconductivity emerges at intermediate Ru doping and coexists with AF order only in the regions where moments are smaller than ∼0.3μ B, resulting in an original nanoscale texture. This situation contrasts with that of Co substitution, challenging the apparent universality of the phase diagram in Fe-based superconductors.",

author = "Y. Laplace and J. Bobroff and V. Brouet and G. Collin and F. Rullier-Albenque and D. Colson and A. Forget",

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AU - Laplace, Y.

AU - Bobroff, J.

AU - Brouet, V.

AU - Collin, G.

AU - Rullier-Albenque, F.

AU - Colson, D.

AU - Forget, A.

PY - 2012/7/30

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N2 - 75As NMR experiments were performed in Ba(Fe 1- xRu x) 2As 2 for x = 0%-80%. Magnetic fractions and NMR line shapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) order inhomogeneously with a magnetic moment distributed from 0.9μ B to 0μ B. Superconductivity emerges at intermediate Ru doping and coexists with AF order only in the regions where moments are smaller than ∼0.3μ B, resulting in an original nanoscale texture. This situation contrasts with that of Co substitution, challenging the apparent universality of the phase diagram in Fe-based superconductors.

AB - 75As NMR experiments were performed in Ba(Fe 1- xRu x) 2As 2 for x = 0%-80%. Magnetic fractions and NMR line shapes demonstrate that Ru substitution destroys the antiferromagnetic (AF) order inhomogeneously with a magnetic moment distributed from 0.9μ B to 0μ B. Superconductivity emerges at intermediate Ru doping and coexists with AF order only in the regions where moments are smaller than ∼0.3μ B, resulting in an original nanoscale texture. This situation contrasts with that of Co substitution, challenging the apparent universality of the phase diagram in Fe-based superconductors.

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DO - 10.1103/PhysRevB.86.020510

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M1 - 020510

ER -

Nanoscale-textured superconductivity in Ru-substituted BaFe 2As 2: A challenge to a universal phase diagram for the pnictides

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Nanoscale-textured superconductivity in Ru-substituted BaFe ₂As ₂: A challenge to a universal phase diagram for the pnictides