Enhanced Fermi-Surface Nesting in SuperconductingBaFe2(As1−xPx)2Revealed by the de Haas–van Alphen Effect

2010/02/05 by James G. Analytis, J. G. Analytis, J. -H. Chu +6 · 2 citations
Chemistry · Materials Science · Physics and Astronomy · #Chemistry #Condensed matter physics #Crystallography #Electron #Fermi level #Fermi liquid theory #Fermi surface #Iron-based superconductors research #Physics #Physics of Superconductivity and Magnetism #Pnictogen #Quantum mechanics #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.str-el #cond-mat.supr-con

paper · pdf · doi:10.1103/physrevlett.105.207004

published as Phys. Rev. Lett. 105, 207004 (2010) · 5 pages, 4 figures

arxiv created 2010/02/05 · openalex publication_date 2010/11/12 · arxiv updated 2010/11/16 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

The three-dimensional Fermi-surface morphology of superconducting BaFe₂(As_0.37P_0.63)₂ with T_c=9 K is determined using the de Haas--van Alphen effect. The inner electron pocket has a similar area and k_z interplane warping to the observed hole pocket, revealing that the Fermi surfaces are geometrically well nested in the (\ensuremathπ,\ensuremathπ) direction. These results are in stark contrast to the fermiology of the nonsuperconducting phosphides (x=1), and therefore suggest an important role for nesting in pnictide superconductivity.

Citations

• Multiband magnetism and superconductivity in Fe-based compounds
• Origin of the 150-K Anomaly in LaFeAsO: Competing Antiferromagnetic Interactions, Frustration, and a Structural Phase Transition

Cited by

• Utilization of mechanical alloying method for flux growth of single crystalline BaFe2(As1−P )2
• Isotropic in-plane quenched disorder and dilution induce a robust nematic state in electron-doped pnictides