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Pseudogap and Superconducting Gap in Sm FeAs(O 1-x F x ) Superconductor from Photoemission Spectroscopy
- Source :
- Chinese Physics Letters. 25:3761-3764
- Publication Year :
- 2008
- Publisher :
- IOP Publishing, 2008.
-
Abstract
- High resolution photoemission measurements are carried out on non-superconducting SmOFeAs parent compound and superconducting SmFeAs(O1-xFx) (x = 0.12, and 0.15) compounds. The momentum-integrated spectra exhibit a clear Fermi cutoff that shows little leading-edge shift in the superconducting state. A robust feature at 13meV is identified in all these samples. Spectral weight suppression near Ef with decreasing temperature is observed in both undoped and doped samples that points to a possible existence of a pseudogap in these Fe-based compounds.
- Subjects :
- Superconductivity
Materials science
Condensed matter physics
Electrical resistivity and conductivity
Photoemission spectroscopy
Band gap
Condensed Matter::Superconductivity
General Physics and Astronomy
Condensed Matter::Strongly Correlated Electrons
Angle-resolved photoemission spectroscopy
Spectroscopy
Pseudogap
Spectral line
Subjects
Details
- ISSN :
- 17413540 and 0256307X
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- Chinese Physics Letters
- Accession number :
- edsair.doi...........b6eb2999d5c88a1a8debec5679ec5b39