Nesting of electron and hole Fermi surfaces in nonsuperconducting BaFe 2P2

B. J. Arnold; S. Kasahara; A. I. Coldea; T. Terashima; Y. Matsuda; T. Shibauchi; A. Carrington

doi:10.1103/PhysRevB.83.220504

Nesting of electron and hole Fermi surfaces in nonsuperconducting BaFe ₂P₂

B. J. Arnold, S. Kasahara, A. I. Coldea, T. Terashima, Y. Matsuda, T. Shibauchi, A. Carrington

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

27 Citations (Scopus)

Abstract

We report detailed measurements of the de Haas-van Alphen (dHvA) effect in BaFe₂P₂, which is the end member of the superconducting series, BaFe₂(As_1-xP_x)₂. Using high-purity samples, we are able to observe dHvA oscillations from all the sheets of the Fermi surface and hence build up a detailed picture of its structure. The results show the existence of a highly warped section of hole surface, which may be the origin of the nodal superconducting gap structure in this series. Importantly, we find that even for this nonsuperconducting end member, one of the hole surfaces almost exactly nests with the inner electron surface. This suggests that improved geometric nesting does not drive the increase in pairing strength with decreasing x in this system.

Original language	English
Article number	220504
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevB.83.220504
Publication status	Published - Jun 9 2011
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We report detailed measurements of the de Haas-van Alphen (dHvA) effect in BaFe2P2, which is the end member of the superconducting series, BaFe2(As1-xPx)2. Using high-purity samples, we are able to observe dHvA oscillations from all the sheets of the Fermi surface and hence build up a detailed picture of its structure. The results show the existence of a highly warped section of hole surface, which may be the origin of the nodal superconducting gap structure in this series. Importantly, we find that even for this nonsuperconducting end member, one of the hole surfaces almost exactly nests with the inner electron surface. This suggests that improved geometric nesting does not drive the increase in pairing strength with decreasing x in this system.",

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T1 - Nesting of electron and hole Fermi surfaces in nonsuperconducting BaFe 2P2

AU - Arnold, B. J.

AU - Kasahara, S.

AU - Coldea, A. I.

AU - Terashima, T.

AU - Matsuda, Y.

AU - Shibauchi, T.

AU - Carrington, A.

PY - 2011/6/9

Y1 - 2011/6/9

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AB - We report detailed measurements of the de Haas-van Alphen (dHvA) effect in BaFe2P2, which is the end member of the superconducting series, BaFe2(As1-xPx)2. Using high-purity samples, we are able to observe dHvA oscillations from all the sheets of the Fermi surface and hence build up a detailed picture of its structure. The results show the existence of a highly warped section of hole surface, which may be the origin of the nodal superconducting gap structure in this series. Importantly, we find that even for this nonsuperconducting end member, one of the hole surfaces almost exactly nests with the inner electron surface. This suggests that improved geometric nesting does not drive the increase in pairing strength with decreasing x in this system.

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Nesting of electron and hole Fermi surfaces in nonsuperconducting BaFe ₂P₂

Abstract

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