Characterization of superconductivity in FeTe0.61Se 0.39 single crystal with Tc ∼ 14 K

T. Taen; Y. Tsuchiya; Y. Nakajima; T. Tamegai

doi:10.1016/j.physc.2010.03.003

Characterization of superconductivity in FeTe_0.61Se _0.39 single crystal with T_c ∼ 14 K

T. Taen, Y. Tsuchiya, Y. Nakajima, T. Tamegai

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

6 Citations (Scopus)

Abstract

We report resistivity, magnetization, critical current density, and the upper critical field of the single crystalline FeTe_0.61Se _0.39 with T_c ∼ 14 K synthesized via slow-furnace cooling followed by low-temperature annealing. Magneto-optical observation confirms the uniformity of current flow in the crystal and the critical current density is estimated to exceed 1 × 10⁵ A/cm² below 5 K under zero field. Weak fish-tail effect is identified at lower temperatures. Upper critical field along ab-plane at T = 0 K estimated from WHH theory exceeds 1000 kOe, which is much higher than that in Ba(Fe_0.9Co _0.1)₂As₂.

Original language	English
Pages (from-to)	S391-S393
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2010.03.003
Publication status	Published - 2010 Dec
Externally published	Yes

Keywords

Iron-chalcogenide
Magneto-optical imaging
Upper critical field

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.2010.03.003

Cite this

@article{1221cc5eec124a888493809467ae587b,

title = "Characterization of superconductivity in FeTe0.61Se 0.39 single crystal with Tc ∼ 14 K",

abstract = "We report resistivity, magnetization, critical current density, and the upper critical field of the single crystalline FeTe0.61Se 0.39 with Tc ∼ 14 K synthesized via slow-furnace cooling followed by low-temperature annealing. Magneto-optical observation confirms the uniformity of current flow in the crystal and the critical current density is estimated to exceed 1 × 105 A/cm2 below 5 K under zero field. Weak fish-tail effect is identified at lower temperatures. Upper critical field along ab-plane at T = 0 K estimated from WHH theory exceeds 1000 kOe, which is much higher than that in Ba(Fe0.9Co 0.1)2As2.",

keywords = "Iron-chalcogenide, Magneto-optical imaging, Upper critical field",

author = "T. Taen and Y. Tsuchiya and Y. Nakajima and T. Tamegai",

note = "Funding Information: We acknowledge T. Nishizaki, S. Awaji, T. Sasaki, and N. Kobayashi for the high magnetic field measurements in Institute for Materials Research, Tohoku University. This work is partly supported by Grant-in-Aid for Scientific Research from MEXT, Japan.",

year = "2010",

month = dec,

doi = "10.1016/j.physc.2010.03.003",

language = "English",

volume = "470",

pages = "S391--S393",

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

issn = "0921-4534",

publisher = "Elsevier",

number = "SUPPL.1",

}

TY - JOUR

T1 - Characterization of superconductivity in FeTe0.61Se 0.39 single crystal with Tc ∼ 14 K

AU - Taen, T.

AU - Tsuchiya, Y.

AU - Nakajima, Y.

AU - Tamegai, T.

N1 - Funding Information: We acknowledge T. Nishizaki, S. Awaji, T. Sasaki, and N. Kobayashi for the high magnetic field measurements in Institute for Materials Research, Tohoku University. This work is partly supported by Grant-in-Aid for Scientific Research from MEXT, Japan.

PY - 2010/12

Y1 - 2010/12

N2 - We report resistivity, magnetization, critical current density, and the upper critical field of the single crystalline FeTe0.61Se 0.39 with Tc ∼ 14 K synthesized via slow-furnace cooling followed by low-temperature annealing. Magneto-optical observation confirms the uniformity of current flow in the crystal and the critical current density is estimated to exceed 1 × 105 A/cm2 below 5 K under zero field. Weak fish-tail effect is identified at lower temperatures. Upper critical field along ab-plane at T = 0 K estimated from WHH theory exceeds 1000 kOe, which is much higher than that in Ba(Fe0.9Co 0.1)2As2.

AB - We report resistivity, magnetization, critical current density, and the upper critical field of the single crystalline FeTe0.61Se 0.39 with Tc ∼ 14 K synthesized via slow-furnace cooling followed by low-temperature annealing. Magneto-optical observation confirms the uniformity of current flow in the crystal and the critical current density is estimated to exceed 1 × 105 A/cm2 below 5 K under zero field. Weak fish-tail effect is identified at lower temperatures. Upper critical field along ab-plane at T = 0 K estimated from WHH theory exceeds 1000 kOe, which is much higher than that in Ba(Fe0.9Co 0.1)2As2.

KW - Iron-chalcogenide

KW - Magneto-optical imaging

KW - Upper critical field

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DO - 10.1016/j.physc.2010.03.003

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JO - Physica C: Superconductivity and its Applications

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