Strong vortex pinning in Co-doped BaFe2 As2 single crystal thin films

C. Tarantini; S. Lee; Y. Zhang; J. Jiang; C. W. Bark; J. D. Weiss; A. Polyanskii; C. T. Nelson; H. W. Jang; C. M. Folkman; S. H. Baek; X. Q. Pan; A. Gurevich; E. E. Hellstrom; C. B. Eom; D. C. Larbalestier

doi:10.1063/1.3383237

Strong vortex pinning in Co-doped BaFe₂ As₂ single crystal thin films

C. Tarantini
, S. Lee
, Y. Zhang
, J. Jiang
, C. W. Bark
, J. D. Weiss
, A. Polyanskii
, C. T. Nelson
, H. W. Jang
, C. M. Folkman
, S. H. Baek
, X. Q. Pan
, A. Gurevich
, E. E. Hellstrom
, C. B. Eom
, D. C. Larbalestier

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

69 Scopus citations

Abstract

We report the field and angular dependences of J_c of truly epitaxial Co-doped BaFe₂ As₂ thin films grown on SrTiO₃ / (La,Sr) (Al,Ta) O₃ with different SrTiO ₃ template thicknesses. The films show J_c comparable to single crystals and a maximum pinning force F_p (0.6 T_c) >5 GN/ m³ at H/H_irr ∼0.5 indicative of strong high-field vortex pinning. Due to the strong correlated c-axis pinning, J _c for field along the c-axis exceeds J_c for H||a _b plane, inverting the expectation of the H_c2 anisotropy. High resolution transmission electron microscopy reveals that the strong vortex pinning is due to a high density of nanosize columnar defects.

Original language	English
Article number	142510
Journal	Applied Physics Letters
Volume	96
Issue number	14
DOIs	https://doi.org/10.1063/1.3383237
State	Published - 2010
Externally published	Yes

Funding

Work at NHMFL was supported under NSF Cooperative Agreement No. DMR-0084173, by the State of Florida, and by AFOSR Grant No. FA9550-06-1-0474. Work at the University of Wisconsin was supported by funding from the DOE Office of Basic Energy Sciences under Award No. DE-FG02-06ER46327. TEM work at the University of Michigan was supported by the DOE Grant No. DE-FG02-07ER46416. TEM facility was supported by NSF.

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Tarantini, C., Lee, S., Zhang, Y., Jiang, J., Bark, C. W., Weiss, J. D., Polyanskii, A., Nelson, C. T., Jang, H. W., Folkman, C. M., Baek, S. H., Pan, X. Q., Gurevich, A., Hellstrom, E. E., Eom, C. B., & Larbalestier, D. C. (2010). Strong vortex pinning in Co-doped BaFe₂ As₂ single crystal thin films. Applied Physics Letters, 96(14), Article 142510. https://doi.org/10.1063/1.3383237

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title = "Strong vortex pinning in Co-doped BaFe2 As2 single crystal thin films",

abstract = "We report the field and angular dependences of Jc of truly epitaxial Co-doped BaFe2 As2 thin films grown on SrTiO3 / (La,Sr) (Al,Ta) O3 with different SrTiO 3 template thicknesses. The films show Jc comparable to single crystals and a maximum pinning force Fp (0.6 Tc) >5 GN/ m3 at H/Hirr ∼0.5 indicative of strong high-field vortex pinning. Due to the strong correlated c-axis pinning, J c for field along the c-axis exceeds Jc for H||a b plane, inverting the expectation of the Hc2 anisotropy. High resolution transmission electron microscopy reveals that the strong vortex pinning is due to a high density of nanosize columnar defects.",

author = "C. Tarantini and S. Lee and Y. Zhang and J. Jiang and Bark, \{C. W.\} and Weiss, \{J. D.\} and A. Polyanskii and Nelson, \{C. T.\} and Jang, \{H. W.\} and Folkman, \{C. M.\} and Baek, \{S. H.\} and Pan, \{X. Q.\} and A. Gurevich and Hellstrom, \{E. E.\} and Eom, \{C. B.\} and Larbalestier, \{D. C.\}",

year = "2010",

doi = "10.1063/1.3383237",

language = "English",

volume = "96",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics",

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TY - JOUR

T1 - Strong vortex pinning in Co-doped BaFe2 As2 single crystal thin films

AU - Tarantini, C.

AU - Lee, S.

AU - Zhang, Y.

AU - Jiang, J.

AU - Bark, C. W.

AU - Weiss, J. D.

AU - Polyanskii, A.

AU - Nelson, C. T.

AU - Jang, H. W.

AU - Folkman, C. M.

AU - Baek, S. H.

AU - Pan, X. Q.

AU - Gurevich, A.

AU - Hellstrom, E. E.

AU - Eom, C. B.

AU - Larbalestier, D. C.

PY - 2010

Y1 - 2010

N2 - We report the field and angular dependences of Jc of truly epitaxial Co-doped BaFe2 As2 thin films grown on SrTiO3 / (La,Sr) (Al,Ta) O3 with different SrTiO 3 template thicknesses. The films show Jc comparable to single crystals and a maximum pinning force Fp (0.6 Tc) >5 GN/ m3 at H/Hirr ∼0.5 indicative of strong high-field vortex pinning. Due to the strong correlated c-axis pinning, J c for field along the c-axis exceeds Jc for H||a b plane, inverting the expectation of the Hc2 anisotropy. High resolution transmission electron microscopy reveals that the strong vortex pinning is due to a high density of nanosize columnar defects.

AB - We report the field and angular dependences of Jc of truly epitaxial Co-doped BaFe2 As2 thin films grown on SrTiO3 / (La,Sr) (Al,Ta) O3 with different SrTiO 3 template thicknesses. The films show Jc comparable to single crystals and a maximum pinning force Fp (0.6 Tc) >5 GN/ m3 at H/Hirr ∼0.5 indicative of strong high-field vortex pinning. Due to the strong correlated c-axis pinning, J c for field along the c-axis exceeds Jc for H||a b plane, inverting the expectation of the Hc2 anisotropy. High resolution transmission electron microscopy reveals that the strong vortex pinning is due to a high density of nanosize columnar defects.

UR - https://www.scopus.com/pages/publications/77951176763

U2 - 10.1063/1.3383237

DO - 10.1063/1.3383237

M3 - Article

AN - SCOPUS:77951176763

SN - 0003-6951

VL - 96

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 14

M1 - 142510

ER -

Strong vortex pinning in Co-doped BaFe₂ As₂ single crystal thin films

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