Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study
We report the inelastic light scattering studies on SmFeAsO0.65 and SmFeAsO0.77H0.12 with iron isotopes namely 54Fe and 57Fe. In both of these systems under investigation we observed a significant shift in the frequency of the phonon modes associated with the displacement of Fe atoms around ∼ 200 cm...
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2016-10-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4966256 |
| _version_ | 1819236726663544832 |
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| author | Birender Singh P. M. Shirage A. Iyo Pradeep Kumar |
| author_facet | Birender Singh P. M. Shirage A. Iyo Pradeep Kumar |
| author_sort | Birender Singh |
| collection | DOAJ |
| description | We report the inelastic light scattering studies on SmFeAsO0.65 and SmFeAsO0.77H0.12 with iron isotopes namely 54Fe and 57Fe. In both of these systems under investigation we observed a significant shift in the frequency of the phonon modes associated with the displacement of Fe atoms around ∼ 200 cm-1. The observed shift in the Fe mode (B1g) for SmFeAsO0.65 is ∼ 1.4 % and lower in case of SmFeAsO0.77H0.12, which is ∼ 0.65 %, attributed to the lower percentage of isotopic substitution in case of SmFeAsO0.77H0.12. Our study reveals the significant iron isotope effect in these systems hinting towards the crucial role of electron-phonon coupling in the pairing mechanism of iron based superconductors. |
| first_indexed | 2024-12-23T13:09:01Z |
| format | Article |
| id | doaj.art-99eb5d0b09fc4461b680f6db7d53eec2 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-23T13:09:01Z |
| publishDate | 2016-10-01 |
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| record_format | Article |
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| spelling | doaj.art-99eb5d0b09fc4461b680f6db7d53eec22022-12-21T17:45:48ZengAIP Publishing LLCAIP Advances2158-32262016-10-01610105310105310-710.1063/1.4966256046610ADVIron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman studyBirender Singh0P. M. Shirage1A. Iyo2Pradeep Kumar3School of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175005, IndiaMetallurgy Engineering and Materials Science & Physics, Indian Institute of Technology Indore, Indore 453552, IndiaNational Institute of Advanced Industrial Science and Technology, Tsukuba, Ibaraki 305-8568, JapanSchool of Basic Sciences, Indian Institute of Technology Mandi, Mandi 175005, IndiaWe report the inelastic light scattering studies on SmFeAsO0.65 and SmFeAsO0.77H0.12 with iron isotopes namely 54Fe and 57Fe. In both of these systems under investigation we observed a significant shift in the frequency of the phonon modes associated with the displacement of Fe atoms around ∼ 200 cm-1. The observed shift in the Fe mode (B1g) for SmFeAsO0.65 is ∼ 1.4 % and lower in case of SmFeAsO0.77H0.12, which is ∼ 0.65 %, attributed to the lower percentage of isotopic substitution in case of SmFeAsO0.77H0.12. Our study reveals the significant iron isotope effect in these systems hinting towards the crucial role of electron-phonon coupling in the pairing mechanism of iron based superconductors.http://dx.doi.org/10.1063/1.4966256 |
| spellingShingle | Birender Singh P. M. Shirage A. Iyo Pradeep Kumar Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study AIP Advances |
| title | Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study |
| title_full | Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study |
| title_fullStr | Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study |
| title_full_unstemmed | Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study |
| title_short | Iron isotope effect in SmFeAsO0.65 and SmFeAsO0.77H0.12 superconductors: A Raman study |
| title_sort | iron isotope effect in smfeaso0 65 and smfeaso0 77h0 12 superconductors a raman study |
| url | http://dx.doi.org/10.1063/1.4966256 |
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