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  Intercalation effect on hyperfine parameters of Fe in FeSe superconductor with Tc=42K

Shylin, S. I., Ksenofontov, V., Sedlmaier, S. J., Clarke, S. J., Cassidy, S. J., Wortmann, G., et al. (2015). Intercalation effect on hyperfine parameters of Fe in FeSe superconductor with Tc=42K. EPL, 109(6): 67004, pp. 1-6. doi:10.1209/0295-5075/109/67004.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-B296-1 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0027-B297-0
Genre: Journal Article

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 Creators:
Shylin, Sergii I.1, Author
Ksenofontov, Vadim1, Author
Sedlmaier, Stefan J.1, Author
Clarke, Simon J.1, Author
Cassidy, Simon J.1, Author
Wortmann, Gerhard1, Author
Medvedev, Sergey A.2, Author              
Felser, Claudia3, Author              
Affiliations:
1External Organizations, ou_persistent22              
2Sergiy Medvediev, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863438              
3Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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 Abstract: Fe-57-Mossbauer spectra of superconducting beta-FeSe, the Li/NH3 intercalate product and a subsequent sample of this intercalate treated with moist He gas have been measured in the temperature range 4.7-290 K. A correlation is established between hyperfine parameters and critical temperature T-c in these phases. A strong increase of the isomer shift upon intercalation is explained by a charge transfer from the Li/NH3 intercalate to the FeSe layers resulting in an increase of Tc up to 42K. A significant decrease of the quadrupole splitting above 240 K has been attributed to diffusive motion of Li+ ions within the interlamellar space. Copyright (C) EPLA, 2015

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Language(s): eng - English
 Dates: 2015-03-30
 Publication Status: Published in print
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 Table of Contents: -
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Title: EPL
  Other : Europhysics Letters
Source Genre: Journal
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Publ. Info: Bristol : IoPP
Pages: - Volume / Issue: 109 (6) Sequence Number: 67004 Start / End Page: 1 - 6 Identifier: Other: 0295-5075
CoNE: https://pure.mpg.de/cone/journals/resource/0295-5075