Fermi surface of the superconductor BaIr2P2

Article

关键词: PHOSPHIDES;   

DOI  :  10.1103/PhysRevB.92.134518

来源: SCIE

【 摘 要 】

We report on de Haas-van Alphen (dHvA) and band-structure studies of the iridium-pnictide superconductor BaIr2P2 (T-c = 2.1 K). The observed dHvA frequencies can be well understood by our band-structure calculations with two bands crossing the Fermi energy leading to a strongly corrugated Fermi-surface cylinder around the X point and a highly evolved, multiconnected Fermi surface extending over the whole Brillouin zone. The experimental effective masses are found to be considerably larger than the calculated band masses suggesting strong many-body interactions. Nevertheless, T-c remains only moderate in BaIr2P2 contrary to isostructural iron pnictides which probably is related to the largely different Fermi-surface topologies in these materials.

【 授权许可】

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