Vortex structure and magnetic properties of BaFe2(As 1-xPx)2 single crystals

L. Vinnikov; A. Friedman; I. Felner; A. Troshina; Y. Yeshurun

doi:10.1088/1742-6596/507/1/012013

Vortex structure and magnetic properties of BaFe₂(As _1-xP_x)₂ single crystals

L. Vinnikov
, A. Friedman
, I. Felner
, A. Troshina
, Y. Yeshurun

Racah Institute of Physics

Research output: Contribution to journal › Conference article › peer-review

4 Scopus citations

Abstract

Magnetic decoration of BaFe₂(As_1-xP_x) ₂ revealed an hexagonal vortex lattice in overdoped single crystals (x>0.4, T_c=14-18 K). A disordered vortex lattice was observed in a crystals with optimal content of phosphorus (x 0.4, T_c 25-30 K). Magneto-optical studies and global magnetization measurement of the optimally-doped crystal have led to an estimated critical current density of ∼ 10⁵A/cm² at 5-12 K in fields up to 0.7 T. This high critical current density suggests strong pinning, probably due to defects, a result consistent with the observed disordered vortex lattice. The critical current density of the overdoped crystal is much smaller, i.e. ∼ 10 ⁴ A/cm² at 5 K in fields up to 0.1 T, decreasing to virtually zero at 0.3 T.

Original language	English
Article number	012013
Journal	Journal of Physics: Conference Series
Volume	507
Issue number	PART 1
DOIs	https://doi.org/10.1088/1742-6596/507/1/012013
State	Published - 2014
Event	11th European Conference on Applied Superconductivity, EUCAS 2013 - Genoa, Italy Duration: 15 Sep 2013 → 19 Sep 2013

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10.1088/1742-6596/507/1/012013

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title = "Vortex structure and magnetic properties of BaFe2(As 1-xPx)2 single crystals",

abstract = "Magnetic decoration of BaFe2(As1-xPx) 2 revealed an hexagonal vortex lattice in overdoped single crystals (x>0.4, Tc=14-18 K). A disordered vortex lattice was observed in a crystals with optimal content of phosphorus (x 0.4, Tc 25-30 K). Magneto-optical studies and global magnetization measurement of the optimally-doped crystal have led to an estimated critical current density of ∼ 105A/cm2 at 5-12 K in fields up to 0.7 T. This high critical current density suggests strong pinning, probably due to defects, a result consistent with the observed disordered vortex lattice. The critical current density of the overdoped crystal is much smaller, i.e. ∼ 10 4 A/cm2 at 5 K in fields up to 0.1 T, decreasing to virtually zero at 0.3 T.",

author = "L. Vinnikov and A. Friedman and I. Felner and A. Troshina and Y. Yeshurun",

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T1 - Vortex structure and magnetic properties of BaFe2(As 1-xPx)2 single crystals

AU - Vinnikov, L.

AU - Friedman, A.

AU - Felner, I.

AU - Troshina, A.

AU - Yeshurun, Y.

PY - 2014

Y1 - 2014

N2 - Magnetic decoration of BaFe2(As1-xPx) 2 revealed an hexagonal vortex lattice in overdoped single crystals (x>0.4, Tc=14-18 K). A disordered vortex lattice was observed in a crystals with optimal content of phosphorus (x 0.4, Tc 25-30 K). Magneto-optical studies and global magnetization measurement of the optimally-doped crystal have led to an estimated critical current density of ∼ 105A/cm2 at 5-12 K in fields up to 0.7 T. This high critical current density suggests strong pinning, probably due to defects, a result consistent with the observed disordered vortex lattice. The critical current density of the overdoped crystal is much smaller, i.e. ∼ 10 4 A/cm2 at 5 K in fields up to 0.1 T, decreasing to virtually zero at 0.3 T.

AB - Magnetic decoration of BaFe2(As1-xPx) 2 revealed an hexagonal vortex lattice in overdoped single crystals (x>0.4, Tc=14-18 K). A disordered vortex lattice was observed in a crystals with optimal content of phosphorus (x 0.4, Tc 25-30 K). Magneto-optical studies and global magnetization measurement of the optimally-doped crystal have led to an estimated critical current density of ∼ 105A/cm2 at 5-12 K in fields up to 0.7 T. This high critical current density suggests strong pinning, probably due to defects, a result consistent with the observed disordered vortex lattice. The critical current density of the overdoped crystal is much smaller, i.e. ∼ 10 4 A/cm2 at 5 K in fields up to 0.1 T, decreasing to virtually zero at 0.3 T.

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Y2 - 15 September 2013 through 19 September 2013

ER -

Vortex structure and magnetic properties of BaFe₂(As _1-xP_x)₂ single crystals

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