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

Shylin SI, Ksenofontov V, Sedlmaier SJ, Clarke SJ, Cassidy SJ, Wortmann G, Medvedev SA, Felser C (2015)

Publication Type: Journal article

Publication year: 2015

Journal

EPL - Europhysics Letters Institute of Physics: EPL

Book Volume: 109

Article Number: 67004

Journal Issue: 6

DOI: 10.1209/0295-5075/109/67004

Abstract

57Fe-Mössbauer spectra of superconducting β-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 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 up to 42 K. A significant decrease of the quadrupole splitting above 240 K has been attributed to diffusive motion of Li+ ions within the interlamellar space.

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) University of Oxford GB United Kingdom (GB) Universität Paderborn DE Germany (DE) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

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

MLA:

Shylin, Sergii I., et al. "Intercalation effect on hyperfine parameters of Fe in FeSe superconductor with Tc = 42 K." EPL - Europhysics Letters 109.6 (2015).

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