Superconducting properties of SmFeAsO1-x prepared under high-pressure condition

Jing Ju; Khuong Huynh; Jun Tang; Zhaofei Li; Masanori Watahiki; Kazumi Sato; Hidenori Terasaki; Eiji Ohtani; Hirotsugu Takizawa; Katsumi Tanigaki

doi:10.1016/j.jpcs.2009.12.019

Superconducting properties of SmFeAsO_1-x prepared under high-pressure condition

Jing Ju, Khuong Huynh, Jun Tang, Zhaofei Li, Masanori Watahiki, Kazumi Sato, Hidenori Terasaki, Eiji Ohtani, Hirotsugu Takizawa, Katsumi Tanigaki

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

8 Citations (Scopus)

Abstract

Synthetic conditions such as stoichiometries, temperature and pressure are optimized to achieve a high quality oxygen deficient SmFeAsO_0.6 superconductor. Both electric and magnetic measurements show a sharp superconducting transition at about 55 K. Several important physical parameters are deduced. The apparent superconducting gap observed in heat capacity with 2Δ_o/k_BT_c of 4.57 larger than that of previous fluorine replaced samples indicate that this superconductivity will not strongly conflict with the phonon-mediated BCS mechanism. The mean free length ℓ=18.8 nm and the coherent length ξ=2.3-3.3 nm show that the superconductivity is in the clean limit.

Original language	English
Pages (from-to)	491-494
Number of pages	4
Journal	Journal of Physics and Chemistry of Solids
Volume	71
Issue number	4
DOIs	https://doi.org/10.1016/j.jpcs.2009.12.019
Publication status	Published - Apr 2010
Externally published	Yes

Keywords

A. Superconductors
B. Inorganic compounds
C. Superconductivity
D. Electronic structure
E. Magnetic properties

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.jpcs.2009.12.019

Cite this

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title = "Superconducting properties of SmFeAsO1-x prepared under high-pressure condition",

abstract = "Synthetic conditions such as stoichiometries, temperature and pressure are optimized to achieve a high quality oxygen deficient SmFeAsO0.6 superconductor. Both electric and magnetic measurements show a sharp superconducting transition at about 55 K. Several important physical parameters are deduced. The apparent superconducting gap observed in heat capacity with 2Δo/kBTc of 4.57 larger than that of previous fluorine replaced samples indicate that this superconductivity will not strongly conflict with the phonon-mediated BCS mechanism. The mean free length ℓ=18.8 nm and the coherent length ξ=2.3-3.3 nm show that the superconductivity is in the clean limit.",

keywords = "A. Superconductors, B. Inorganic compounds, C. Superconductivity, D. Electronic structure, E. Magnetic properties",

author = "Jing Ju and Khuong Huynh and Jun Tang and Zhaofei Li and Masanori Watahiki and Kazumi Sato and Hidenori Terasaki and Eiji Ohtani and Hirotsugu Takizawa and Katsumi Tanigaki",

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T1 - Superconducting properties of SmFeAsO1-x prepared under high-pressure condition

AU - Ju, Jing

AU - Huynh, Khuong

AU - Tang, Jun

AU - Li, Zhaofei

AU - Watahiki, Masanori

AU - Sato, Kazumi

AU - Terasaki, Hidenori

AU - Ohtani, Eiji

AU - Takizawa, Hirotsugu

AU - Tanigaki, Katsumi

PY - 2010/4

Y1 - 2010/4

N2 - Synthetic conditions such as stoichiometries, temperature and pressure are optimized to achieve a high quality oxygen deficient SmFeAsO0.6 superconductor. Both electric and magnetic measurements show a sharp superconducting transition at about 55 K. Several important physical parameters are deduced. The apparent superconducting gap observed in heat capacity with 2Δo/kBTc of 4.57 larger than that of previous fluorine replaced samples indicate that this superconductivity will not strongly conflict with the phonon-mediated BCS mechanism. The mean free length ℓ=18.8 nm and the coherent length ξ=2.3-3.3 nm show that the superconductivity is in the clean limit.

AB - Synthetic conditions such as stoichiometries, temperature and pressure are optimized to achieve a high quality oxygen deficient SmFeAsO0.6 superconductor. Both electric and magnetic measurements show a sharp superconducting transition at about 55 K. Several important physical parameters are deduced. The apparent superconducting gap observed in heat capacity with 2Δo/kBTc of 4.57 larger than that of previous fluorine replaced samples indicate that this superconductivity will not strongly conflict with the phonon-mediated BCS mechanism. The mean free length ℓ=18.8 nm and the coherent length ξ=2.3-3.3 nm show that the superconductivity is in the clean limit.

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KW - B. Inorganic compounds

KW - C. Superconductivity

KW - D. Electronic structure

KW - E. Magnetic properties

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