Superconducting properties of iron-platinum-arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4)

T. Tamegai; Q. P. Ding; T. Taen; F. Ohtake; H. Inoue; Y. Tsuchiya; S. Mohan; Y. Sun; Y. Nakajima; S. Pyon; H. Kitamura

doi:10.1016/j.physc.2013.04.037

Superconducting properties of iron-platinum-arsenides Ca ₁₀(Pt_nAs₈)(Fe_2-xPt _xAs₂)₅ (n = 3, 4)

T. Tamegai, Q. P. Ding, T. Taen, F. Ohtake, H. Inoue, Y. Tsuchiya, S. Mohan, Y. Sun, Y. Nakajima, S. Pyon, H. Kitamura

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

5 Citations (Scopus)

Abstract

High-quality single crystals of iron-platinum arsenides Ca ₁₀(Pt_nAs₈)(Fe_2-xPt _xAs₂)₅ (n = 3, 4) have been grown and their superconducting properties are characterized. The n = 4 and n = 3 compounds have T_c's ∼ 30 K and 13 K, respectively. Reflecting a modest anisotropy of the system, resistive transition for H//c-axis shows modest broadening in both systems. Magneto-optical imaging shows that superconductivity in both compounds is rather homogeneous, with the critical current density, J_c, ∼1 × 10⁵ A/cm² at 5 K under self-field. Proton irradiation up to 4 × 10¹⁶ cm^-2 into n = 3 compound is found to have T_c suppression by ∼2 K and J_c enhancement by a factor of three at low temperatures.

Original language	English
Pages (from-to)	65-68
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	494
DOIs	https://doi.org/10.1016/j.physc.2013.04.037
Publication status	Published - 2013
Externally published	Yes

Keywords

Critical current density
Iron-based superconductors
Iron-platinum-arsenide
Magneto-optical imaging

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/j.physc.2013.04.037

Cite this

@article{91dd66b9590a4a30bedea07ea846a300,

title = "Superconducting properties of iron-platinum-arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4)",

abstract = "High-quality single crystals of iron-platinum arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4) have been grown and their superconducting properties are characterized. The n = 4 and n = 3 compounds have Tc's ∼ 30 K and 13 K, respectively. Reflecting a modest anisotropy of the system, resistive transition for H//c-axis shows modest broadening in both systems. Magneto-optical imaging shows that superconductivity in both compounds is rather homogeneous, with the critical current density, Jc, ∼1 × 105 A/cm2 at 5 K under self-field. Proton irradiation up to 4 × 1016 cm-2 into n = 3 compound is found to have Tc suppression by ∼2 K and Jc enhancement by a factor of three at low temperatures.",

keywords = "Critical current density, Iron-based superconductors, Iron-platinum-arsenide, Magneto-optical imaging",

author = "T. Tamegai and Ding, {Q. P.} and T. Taen and F. Ohtake and H. Inoue and Y. Tsuchiya and S. Mohan and Y. Sun and Y. Nakajima and S. Pyon and H. Kitamura",

year = "2013",

doi = "10.1016/j.physc.2013.04.037",

language = "English",

volume = "494",

pages = "65--68",

journal = "Physica C: Superconductivity and its Applications",

issn = "0921-4534",

publisher = "Elsevier",

}

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T1 - Superconducting properties of iron-platinum-arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4)

AU - Tamegai, T.

AU - Ding, Q. P.

AU - Taen, T.

AU - Ohtake, F.

AU - Inoue, H.

AU - Tsuchiya, Y.

AU - Mohan, S.

AU - Sun, Y.

AU - Nakajima, Y.

AU - Pyon, S.

AU - Kitamura, H.

PY - 2013

Y1 - 2013

N2 - High-quality single crystals of iron-platinum arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4) have been grown and their superconducting properties are characterized. The n = 4 and n = 3 compounds have Tc's ∼ 30 K and 13 K, respectively. Reflecting a modest anisotropy of the system, resistive transition for H//c-axis shows modest broadening in both systems. Magneto-optical imaging shows that superconductivity in both compounds is rather homogeneous, with the critical current density, Jc, ∼1 × 105 A/cm2 at 5 K under self-field. Proton irradiation up to 4 × 1016 cm-2 into n = 3 compound is found to have Tc suppression by ∼2 K and Jc enhancement by a factor of three at low temperatures.

AB - High-quality single crystals of iron-platinum arsenides Ca 10(PtnAs8)(Fe2-xPt xAs2)5 (n = 3, 4) have been grown and their superconducting properties are characterized. The n = 4 and n = 3 compounds have Tc's ∼ 30 K and 13 K, respectively. Reflecting a modest anisotropy of the system, resistive transition for H//c-axis shows modest broadening in both systems. Magneto-optical imaging shows that superconductivity in both compounds is rather homogeneous, with the critical current density, Jc, ∼1 × 105 A/cm2 at 5 K under self-field. Proton irradiation up to 4 × 1016 cm-2 into n = 3 compound is found to have Tc suppression by ∼2 K and Jc enhancement by a factor of three at low temperatures.

KW - Critical current density

KW - Iron-based superconductors

KW - Iron-platinum-arsenide

KW - Magneto-optical imaging

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JO - Physica C: Superconductivity and its Applications

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