Open Access
Scientific Reports, volume 6, issue 1, publication number 25624
New superconductor LixFe1+δ Se (x ≤ 0.07, Tc up to 44 K) by an electrochemical route
Alekseeva Anastasia M
1, 2
,
Drozhzhin Oleg A
1, 2
,
Dosaev Kirill A
1, 2
,
Zakharov Konstantin V.
3
,
Volkova Olga S
3
,
Chareev Dmitriy A.
4
,
Vasiliev Alexander N.
3
,
Koz Cevriye
5
,
Schwarz Ulrich
5
,
Rosner Helge
5
,
Grin Yuri
5
2
5
Max-Planck-Institut für chemische Physik fester Stoffe, Dresden, Germany
|
Publication type: Journal Article
Publication date: 2016-05-11
PubMed ID:
27167718
Multidisciplinary
Abstract
The superconducting transition temperature (Tc) of tetragonal Fe1+δSe was enhanced from 8.5 K to 44 K by chemical structure modification. While insertion of large alkaline cations like K or solvated lithium and iron cations in the interlayer space, the [Fe2Se2] interlayer separation increases significantly from 5.5 Å in native Fe1+δSe to >7 Å in KxFe1−ySe and to >9 Å in Li1−xFex(OH)Fe1−ySe, we report on an electrochemical route to modify the superconducting properties of Fe1+δSe. In contrast to conventional chemical (solution) techniques, the electrochemical approach allows to insert non-solvated Li+ into the Fe1+δSe structure which preserves the native arrangement of [Fe2Se2] layers and their small separation. The amount of intercalated lithium is extremely small (about 0.07 Li+ per f.u.), however, its incorporation results in the enhancement of Tc up to ∼44 K. The quantum-mechanical calculations show that Li occupies the octahedrally coordinated position, while the [Fe2Se2] layers remain basically unmodified. The obtained enhancement of the electronic density of states at the Fermi level clearly exceeds the effect expected on basis of rigid band behavior.
Citations by journals
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Inorganic Chemistry
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1 publication, 4.76%
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1 publication, 4.76%
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1 publication, 4.76%
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1 publication, 4.76%
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Citations by publishers
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5 publications, 23.81%
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Wiley
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Springer Nature
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IOP Publishing
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IOP Publishing
2 publications, 9.52%
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American Physical Society (APS)
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American Physical Society (APS)
1 publication, 4.76%
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Physical Society of Japan
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Physical Society of Japan
1 publication, 4.76%
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Royal Society of Chemistry (RSC)
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Royal Society of Chemistry (RSC)
1 publication, 4.76%
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American Institute of Physics (AIP)
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American Institute of Physics (AIP)
1 publication, 4.76%
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- We do not take into account publications that without a DOI.
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- Statistics recalculated weekly.
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Alekseeva A. M. et al. New superconductor LixFe1+δ Se (x ≤ 0.07, Tc up to 44 K) by an electrochemical route // Scientific Reports. 2016. Vol. 6. No. 1. 25624
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Alekseeva A. M., Drozhzhin O. A., Dosaev K. A., Antipov E. V., Zakharov K. V., Volkova O. S., Chareev D. A., Vasiliev A. N., Koz C., Schwarz U., Rosner H., Grin Y. New superconductor LixFe1+δ Se (x ≤ 0.07, Tc up to 44 K) by an electrochemical route // Scientific Reports. 2016. Vol. 6. No. 1. 25624
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TY - JOUR
DO - 10.1038/srep25624
UR - https://doi.org/10.1038%2Fsrep25624
TI - New superconductor LixFe1+δ Se (x ≤ 0.07, Tc up to 44 K) by an electrochemical route
T2 - Scientific Reports
AU - Alekseeva, Anastasia M
AU - Drozhzhin, Oleg A
AU - Dosaev, Kirill A
AU - Antipov, Evgeny V.
AU - Zakharov, Konstantin V.
AU - Volkova, Olga S
AU - Chareev, Dmitriy A.
AU - Vasiliev, Alexander N.
AU - Koz, Cevriye
AU - Schwarz, Ulrich
AU - Grin, Yuri
AU - Rosner, Helge
PY - 2016
DA - 2016/05/11 00:00:00
PB - Springer Nature
IS - 1
VL - 6
PMID - 27167718
SN - 2045-2322
ER -
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@article{2016_Alekseeva,
author = {Anastasia M Alekseeva and Oleg A Drozhzhin and Kirill A Dosaev and Evgeny V. Antipov and Konstantin V. Zakharov and Olga S Volkova and Dmitriy A. Chareev and Alexander N. Vasiliev and Cevriye Koz and Ulrich Schwarz and Yuri Grin and Helge Rosner},
title = {New superconductor LixFe1+δ Se (x ≤ 0.07, Tc up to 44 K) by an electrochemical route},
journal = {Scientific Reports},
year = {2016},
volume = {6},
publisher = {Springer Nature},
month = {may},
url = {https://doi.org/10.1038%2Fsrep25624},
number = {1},
doi = {10.1038/srep25624}
}