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Article: Optical and Raman spectroscopy studies on Fe-based superconductors

TitleOptical and Raman spectroscopy studies on Fe-based superconductors
Authors
KeywordsInfrared and Raman spectroscopy
Iron pnictides
Spin-density waves
Superconductivity
Issue Date2009
Citation
Physica C: Superconductivity and its Applications, 2009, v. 469, n. 9-12, p. 545-558 How to Cite?
AbstractA brief review of optical and Raman studies on the Fe-based superconductors is given, with special emphasis on the competing phenomenon in this system. Optical investigations on ReFeAsO (Re = rare-earth element) and AFe 2 As 2 (A = alkaline-earth metal) families provide clear evidence for the gap formation in the broken symmetry states, including the partial gaps in the spin-density wave states of parent compounds, and the pairing gaps in the superconducting states for doped compounds. Especially, the superconducting gap has an s-wave pairing lineshape in hole-doped BaFe 2 As 2 . Optical phonons at zone center detected by Raman and infrared techniques are classified for several Fe-based compounds. Related issues, such as the electron-phonon coupling and the effect of spin-density wave and superconducting transitions on phonons, are also discussed. Meanwhile, open questions including the T-dependent mid-infrared peak at 0.6-0.7 eV, electronic correlation, and the similarities/differences between high-T c cuprates and Fe-based superconductors are also briefly discussed. Important results from other experimental probes are compared with optical data to better understand the spin-density wave properties, the superconductivity, and the multi-band character in Fe-based compounds. © 2009 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/254516
ISSN
2015 Impact Factor: 0.835
2015 SCImago Journal Rankings: 0.472

 

DC FieldValueLanguage
dc.contributor.authorHu, W. Z.-
dc.contributor.authorZhang, Q. M.-
dc.contributor.authorWang, N. L.-
dc.date.accessioned2018-06-19T15:40:46Z-
dc.date.available2018-06-19T15:40:46Z-
dc.date.issued2009-
dc.identifier.citationPhysica C: Superconductivity and its Applications, 2009, v. 469, n. 9-12, p. 545-558-
dc.identifier.issn0921-4534-
dc.identifier.urihttp://hdl.handle.net/10722/254516-
dc.description.abstractA brief review of optical and Raman studies on the Fe-based superconductors is given, with special emphasis on the competing phenomenon in this system. Optical investigations on ReFeAsO (Re = rare-earth element) and AFe 2 As 2 (A = alkaline-earth metal) families provide clear evidence for the gap formation in the broken symmetry states, including the partial gaps in the spin-density wave states of parent compounds, and the pairing gaps in the superconducting states for doped compounds. Especially, the superconducting gap has an s-wave pairing lineshape in hole-doped BaFe 2 As 2 . Optical phonons at zone center detected by Raman and infrared techniques are classified for several Fe-based compounds. Related issues, such as the electron-phonon coupling and the effect of spin-density wave and superconducting transitions on phonons, are also discussed. Meanwhile, open questions including the T-dependent mid-infrared peak at 0.6-0.7 eV, electronic correlation, and the similarities/differences between high-T c cuprates and Fe-based superconductors are also briefly discussed. Important results from other experimental probes are compared with optical data to better understand the spin-density wave properties, the superconductivity, and the multi-band character in Fe-based compounds. © 2009 Elsevier B.V. All rights reserved.-
dc.languageeng-
dc.relation.ispartofPhysica C: Superconductivity and its Applications-
dc.subjectInfrared and Raman spectroscopy-
dc.subjectIron pnictides-
dc.subjectSpin-density waves-
dc.subjectSuperconductivity-
dc.titleOptical and Raman spectroscopy studies on Fe-based superconductors-
dc.typeArticle-
dc.description.natureLink_to_subscribed_fulltext-
dc.identifier.doi10.1016/j.physc.2009.03.047-
dc.identifier.scopuseid_2-s2.0-65549166313-
dc.identifier.volume469-
dc.identifier.issue9-12-
dc.identifier.spage545-
dc.identifier.epage558-

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