Fermi surface of the superconductor BaIr2P2
Fermi surface of the superconductor BaIr2P2
Förster, T.; Bergk, B.; Ignatchik, O.; Bartkowiak, M.; Blackburn, S.; Coté, M.; Seyfarth, G.; Berry, N.; Fisk, Z.; Sheikin, I.
We report on de Haas–van Alphen (dHvA) and band-structure studies of the iridium-pnictide superconductor BaIr2P2 (Tc = 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, Tc remains only moderate in BaIr2P2 contrary to isostructural iron pnictides which probably is related to the largely different Fermi-surface topologies in these materials.
Involved research facilities
- High Magnetic Field Laboratory (HLD)
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Physical Review B 92(2015), 134518
DOI: 10.1103/PhysRevB.92.134518
Cited 5 times in Scopus
Permalink: https://www.hzdr.de/publications/Publ-22655