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Quantum oscillations in the SmFeAsO parent compound and superconducting SmFeAs(O,F)
- Source :
- Physical Review B, 96, 10, pp. 1-5, Physical Review B 96 (2017). doi:10.1103/PhysRevB.96.104508, info:cnr-pdr/source/autori:Caglieris F.; Leveratto A.; Pallecchi I.; Bernardini F.; Fujioka M.; Takano Y.; Repetto L.; Jost A.; Zeitler U.; Putti M./titolo:Quantum oscillations in the SmFeAsO parent compound and superconducting SmFeAs(O,F)/doi:10.1103%2FPhysRevB.96.104508/rivista:Physical Review B/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:96, Physical Review B, 96, 1-5
- Publication Year :
- 2017
-
Abstract
- By carrying out magnetotransport measurements up to 30 T, we succeeded in detecting and analyzing quantitatively Shubnikov--de Haas oscillations in two crystals of the $RE\mathrm{FeAsO}$ ($RE=\mathrm{rare}\phantom{\rule{0.28em}{0ex}}\mathrm{earth}$) family of iron pnictides, namely, the undoped SmFeAsO and the superconducting fluorine underdoped SmFeAs(O,F). We combine experimental outcomes and ab initio calculations of electronic structure to get the following direct evidences: (i) the Shubnikov--de Haas oscillations are determined by a two-dimensional hole band, whose effective mass is ${m}^{*}=(0.50\ifmmode\pm\else\textpm\fi{}0.1)\phantom{\rule{0.16em}{0ex}}{m}_{e}$ in the undoped sample and ${m}^{*}=(0.89\ifmmode\pm\else\textpm\fi{}0.1)\phantom{\rule{0.16em}{0ex}}{m}_{e}$ in the F-doped sample, while classical magnetotransport is dominated by an electron band; (ii) in the superconducting compound we give a quantitative account of the low effectiveness of electron doping associated with fluorine substitution.
- Subjects :
- Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Physics
Superconductivity
Condensed matter physics
Electron doping
Quantum oscillations
02 engineering and technology
Electron
Electronic structure
Correlated Electron Systems / High Field Magnet Laboratory (HFML)
021001 nanoscience & nanotechnology
01 natural sciences
Effective mass (solid-state physics)
Ab initio quantum chemistry methods
0103 physical sciences
Electronic
Optical and Magnetic Materials
010306 general physics
0210 nano-technology
Subjects
Details
- ISSN :
- 24699950
- Database :
- OpenAIRE
- Journal :
- Physical Review B, 96, 10, pp. 1-5, Physical Review B 96 (2017). doi:10.1103/PhysRevB.96.104508, info:cnr-pdr/source/autori:Caglieris F.; Leveratto A.; Pallecchi I.; Bernardini F.; Fujioka M.; Takano Y.; Repetto L.; Jost A.; Zeitler U.; Putti M./titolo:Quantum oscillations in the SmFeAsO parent compound and superconducting SmFeAs(O,F)/doi:10.1103%2FPhysRevB.96.104508/rivista:Physical Review B/anno:2017/pagina_da:/pagina_a:/intervallo_pagine:/volume:96, Physical Review B, 96, 1-5
- Accession number :
- edsair.doi.dedup.....d467ce8c04f9beea569813624cb93718
- Full Text :
- https://doi.org/10.1103/PhysRevB.96.104508