Issue 10, 2013
From the journal:

CrystEngComm

Single crystal growth and characterization of tetragonal FeSe1−x superconductors

Dmitriy Chareev,a   Evgeniy Osadchii,a   Tatiana Kuzmicheva,b   Jiunn-Yuan Lin,c   Svetoslav Kuzmichev,d   Olga Volkovad  and  Alexander Vasiliev*d  

* Corresponding authors

a Institute of Experimental Mineralogy, Russian Academy of Sciences, 142432 Chernogolovka, Moscow District, Russia

b P.N. Lebedev Physical Institute, Russian Academy of Sciences, 119991 Moscow, Russia

c Institute of Physics, National Chiao Tung University, Hsinchu 300, Taiwan, R.O.C

d Low Temperature Physics and Superconductivity Department, M.V. Lomonosov Moscow State University, 119991 Moscow, Russia
E-mail: vasil@mig.phys.msu.ru
Fax: +07 495 9329217
Tel: +07 495 9329217

Abstract

The plate-like single crystals of tetragonal (P4/nmm) FeSe1−x superconductors were grown using the KCl–AlCl3 flux technique which produced single crystalline tetragonal samples of about 4 × 4 × 0.1 mm3 dimensions. The energy dispersive X-ray spectroscopy established a ratio of Fe : Se = 1 : 0.96 ± 0.02. The resistivity and magnetization measurements revealed a sharp superconducting transition at Tc = 9.4 K. Multiple Andreev reflections spectroscopy pointed to the existence of two-gap superconductivity with the gap values ΔL = 2.4 ± 0.2 meV and ΔS = 0.75 ± 0.1 meV at 4.2 K.

Graphical abstract: Single crystal growth and characterization of tetragonal FeSe1−x superconductors

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Article information

DOI
https://doi.org/10.1039/C2CE26857D
Article type
Paper
Submitted
14 Nov 2012
Accepted
04 Jan 2013
First published
04 Jan 2013

CrystEngComm, 2013,15, 1989-1993

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Single crystal growth and characterization of tetragonal FeSe1−x superconductors

D. Chareev, E. Osadchii, T. Kuzmicheva, J. Lin, S. Kuzmichev, O. Volkova and A. Vasiliev, CrystEngComm, 2013, 15, 1989 DOI: 10.1039/C2CE26857D

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