Evidence for a directed δtc-type flux pinning by means of nanostripes in (Sm0.33Eu0.33Gd0.33)Ba 2Cu3Oy high-Tc superconductors

M. R. Koblischka; U. Hartmann

doi:10.1209/0295-5075/89/47002

Evidence for a directed δt_c-type flux pinning by means of nanostripes in (Sm_0.33Eu_0.33Gd_0.33)Ba ₂Cu₃O_y high-T_c superconductors

M. R. Koblischka, U. Hartmann

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

6 Citations (Scopus)

Abstract

By means of four-point transport measurements on bulk, high-T_c superconducting samples of composition (Sm_0.33Eu _0.33Gd_0.33)Ba₂Cu₃O_y exhibiting self-organized nanostripes formed by nanoclusters of the light-rare-earth-rich phase, we find that at temperatures close to the transition temperature the currents flowing parallel to the nanostripes are clearly larger than in the perpendicular direction. Constructing a pinning force diagram from the j_c(H_a)-data obtained, we find strong evidence for a dominating δT_c-pinning when the currents are flowing parallel to the nanostripes.

Original language	English
Article number	47002
Journal	EPL
Volume	89
Issue number	4
DOIs	https://doi.org/10.1209/0295-5075/89/47002
Publication status	Published - 2010 Mar 23
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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AB - By means of four-point transport measurements on bulk, high-Tc superconducting samples of composition (Sm0.33Eu 0.33Gd0.33)Ba2Cu3Oy exhibiting self-organized nanostripes formed by nanoclusters of the light-rare-earth-rich phase, we find that at temperatures close to the transition temperature the currents flowing parallel to the nanostripes are clearly larger than in the perpendicular direction. Constructing a pinning force diagram from the jc(Ha)-data obtained, we find strong evidence for a dominating δTc-pinning when the currents are flowing parallel to the nanostripes.

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