Significant reduction of electronic correlations upon isovalent ru substitution of BaFe2As2

V. Brouet; F. Rullier-Albenque; M. Marsi; B. Mansart; M. Aichhorn; S. Biermann; J. Faure; L. Perfetti; A. Taleb-Ibrahimi; P. Le Fèvre; F. Bertran; A. Forget; D. Colson

doi:10.1103/PhysRevLett.105.087001

Significant reduction of electronic correlations upon isovalent ru substitution of BaFe2As2

V. Brouet
, F. Rullier-Albenque
, M. Marsi
, B. Mansart
, M. Aichhorn
, S. Biermann
, J. Faure
, L. Perfetti
, A. Taleb-Ibrahimi
, P. Le Fèvre
, F. Bertran
, A. Forget
, D. Colson

Laboratoire de Physique des Solides
Université Paris-Saclay
CNRS
Synchrotron SOLEIL

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

Abstract

We investigate Ba(Fe0.65Ru0.35)2As2, a compound in which superconductivity appears at the expense of magnetism, by transport measurements and angle resolved photoemission spectroscopy. By resolving the different Fermi surface pockets and deducing from their volumes the number of hole and electron carriers, we show that Ru induces neither hole nor electron doping. However, the Fermi surface pockets are about twice larger than in BaFe2As2. A change of sign of the Hall coefficient with decreasing temperature evidences the contribution of both carriers to the transport. Fermi velocities increase significantly with respect to BaFe2As2, suggesting a reduction of correlation effects.

Original language	English
Article number	087001
Journal	Physical Review Letters
Volume	105
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.105.087001
Publication status	Published - 17 Aug 2010

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Brouet, V., Rullier-Albenque, F., Marsi, M., Mansart, B., Aichhorn, M., Biermann, S., Faure, J., Perfetti, L., Taleb-Ibrahimi, A., Le Fèvre, P., Bertran, F., Forget, A., & Colson, D. (2010). Significant reduction of electronic correlations upon isovalent ru substitution of BaFe2As2. Physical Review Letters, 105(8), Article 087001. https://doi.org/10.1103/PhysRevLett.105.087001

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abstract = "We investigate Ba(Fe0.65Ru0.35)2As2, a compound in which superconductivity appears at the expense of magnetism, by transport measurements and angle resolved photoemission spectroscopy. By resolving the different Fermi surface pockets and deducing from their volumes the number of hole and electron carriers, we show that Ru induces neither hole nor electron doping. However, the Fermi surface pockets are about twice larger than in BaFe2As2. A change of sign of the Hall coefficient with decreasing temperature evidences the contribution of both carriers to the transport. Fermi velocities increase significantly with respect to BaFe2As2, suggesting a reduction of correlation effects.",

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doi = "10.1103/PhysRevLett.105.087001",

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AU - Brouet, V.

AU - Rullier-Albenque, F.

AU - Marsi, M.

AU - Mansart, B.

AU - Aichhorn, M.

AU - Biermann, S.

AU - Faure, J.

AU - Perfetti, L.

AU - Taleb-Ibrahimi, A.

AU - Le Fèvre, P.

AU - Bertran, F.

AU - Forget, A.

AU - Colson, D.

PY - 2010/8/17

Y1 - 2010/8/17

N2 - We investigate Ba(Fe0.65Ru0.35)2As2, a compound in which superconductivity appears at the expense of magnetism, by transport measurements and angle resolved photoemission spectroscopy. By resolving the different Fermi surface pockets and deducing from their volumes the number of hole and electron carriers, we show that Ru induces neither hole nor electron doping. However, the Fermi surface pockets are about twice larger than in BaFe2As2. A change of sign of the Hall coefficient with decreasing temperature evidences the contribution of both carriers to the transport. Fermi velocities increase significantly with respect to BaFe2As2, suggesting a reduction of correlation effects.

AB - We investigate Ba(Fe0.65Ru0.35)2As2, a compound in which superconductivity appears at the expense of magnetism, by transport measurements and angle resolved photoemission spectroscopy. By resolving the different Fermi surface pockets and deducing from their volumes the number of hole and electron carriers, we show that Ru induces neither hole nor electron doping. However, the Fermi surface pockets are about twice larger than in BaFe2As2. A change of sign of the Hall coefficient with decreasing temperature evidences the contribution of both carriers to the transport. Fermi velocities increase significantly with respect to BaFe2As2, suggesting a reduction of correlation effects.

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DO - 10.1103/PhysRevLett.105.087001

M3 - Article

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VL - 105

JO - Physical Review Letters

JF - Physical Review Letters

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ER -

Significant reduction of electronic correlations upon isovalent ru substitution of BaFe2As2

Abstract

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