Single crystal growth and characterization of tetragonal FeSe1-x superconductors

Dmitriy Chareev; Evgeniy Osadchii; Tatiana Kuzmicheva; Jiunn-Yuan Lin; Svetoslav Kuzmichev; Olga Volkova; Alexander Vasiliev

doi:10.1039/c2ce26857d

Single crystal growth and characterization of tetragonal FeSe_1-x superconductors

Dmitriy Chareev, Evgeniy Osadchii, Tatiana Kuzmicheva, Jiunn-Yuan Lin, Svetoslav Kuzmichev, Olga Volkova, Alexander Vasiliev^*

^*Corresponding author for this work

Institute of Physics

Research output: Contribution to journal › Article › peer-review

139 Scopus citations

Abstract

The plate-like single crystals of tetragonal (P4/nmm) FeSe_1-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 T_c = 9.4 K. Multiple Andreev reflections spectroscopy pointed to the existence of two-gap superconductivity with the gap values Δ_L = 2.4 ± 0.2 meV and Δ_S = 0.75 ± 0.1 meV at 4.2 K.

Original language	English
Pages (from-to)	1989-1993
Number of pages	5
Journal	CrystEngComm
Volume	15
Issue number	10
DOIs	https://doi.org/10.1039/c2ce26857d
State	Published - 14 Mar 2013

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title = "Single crystal growth and characterization of tetragonal FeSe1-x superconductors",

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.",

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T1 - Single crystal growth and characterization of tetragonal FeSe1-x superconductors

AU - Chareev, Dmitriy

AU - Osadchii, Evgeniy

AU - Kuzmicheva, Tatiana

AU - Lin, Jiunn-Yuan

AU - Kuzmichev, Svetoslav

AU - Volkova, Olga

AU - Vasiliev, Alexander

PY - 2013/3/14

Y1 - 2013/3/14

N2 - 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.

AB - 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.

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DO - 10.1039/c2ce26857d

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VL - 15

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EP - 1993

JO - CrystEngComm

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Single crystal growth and characterization of tetragonal FeSe_1-x superconductors

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