Vortex channeling along twin planes in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">YBa</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Cu</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mm

Oussena, M.; Groot, P.A.J. de; Porter, S.J.; Gagnon, R.; Taillefer, Louis

doi:10.1103/physrevb.51.1389

Cited by 101 publications

(48 citation statements)

References 23 publications

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“…The conclusion is corroborated by measurements of the critical current densities j c of thin epitaxial YBCO films, which are known to be at least an order of magnitude larger than that for high-quality YBCO single crystals [18]. The main reason for that is strong flux pinning in the films caused by specific defects such as point defects in the CuO 2 planes [19], screw dislocations [20], and twin boundaries [21], expected to be also responsible for observed s¢( ) T dependence of the LD type. However, the properties of high-quality modern thin epitaxial HTSC films prepared by pulsed laser deposition [22] are believed to be mostly determined by some slight degree of miscut growth of the films, resulting in the appearance of specific growth-related defects [23,24].…”

Section: Introductionsupporting

confidence: 57%

Fluctuation conductivity in Y–Ba–Cu–O films with artificially produced defects

Solovjov

2002

Low Temperature Physics

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The fluctuation-induced conductivity (paraconductivity) measured in YBa 2 Cu 3 O 7-d (YBCO) films grown on 10°miscut SrTiO 3 (001) substrates is analyzed using various theoretical models describing weak fluctuations in high-T c superconductors and considering both Aslamazov-Larkin and Maki-Thompson fluctuation contributions in the clean limit approach. The analysis reveals a highly anisotropic pair-breaking caused by structural defects produced. This result is in favor of an idea that pseudogap in high-T c oxydes is mainly governed by the fluctuating pairing.

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Section: Introductionsupporting

confidence: 57%

Fluctuation conductivity in Y–Ba–Cu–O films with artificially produced defects

Solovjov

2002

Low Temperature Physics

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“…In our recent work we have shown that the magnetic J c strongly depends on the sample size. 4 In contrast to the high-T c superconductor materials 5 it was observed that in pure MgB 2 bulk samples H irr decreased as the sample volume decreased. Due to the dependence of J c on sample size, for a reliable comparison of J c values derived from magnetic measurements, sample size has to be carefully taken into account.…”

Section: Effect Of Sample Size On the Magnetic Critical Current Densimentioning

confidence: 97%

Effect of sample size on the magnetic critical current density in nano-SiC dopedMgB2superconductors

et al. 2003

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“…Superimposed to the problems arising from the small values in ξ is the difficulty due to the poly-elemental composition of the material with a variety of possible lattice defects giving rise to a plethora of pinning mechanisms with -probably -quite different efficiency. In YBCO single crystals randomly distributed point defects such as oxygen vacancies lead to a weak collective pinning [81,82], correlated pinning has been demonstrated to arise from twin boundaries [83] and artificial columnar defects generated by heavy particle irradiation [84]. They allow the appropriate alignment of the vortex system with the defect structure resulting in higher pinning forces compared to collective pinning induced by point defects.…”

Section: Controlled Generation Of Antiphase Boundariesmentioning

confidence: 99%

Science and technology of cuprate-based high temperature superconductor thin films, heterostructures and superlattices—the first 30 years (Review Article)

Habermeier

2016

Low Temperature Physics

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Science and technology of cuprate-based high temperature superconductor thin films, heterostructures and superlattices -the first 30 years (Review Article) H.-U. Habermeier Science Consulting International, Niersteinerstr, 28, Stuttgart D 70499, Germany Max-Planck-Institute for Solid State Research, Heisenbergstr, 1, Stuttgart D 70569, Germany E-mail: huh@fkf.mpg.de Received May 30, 2016, published online August 25, 2016 During the three decades after the discovery of superconductivity at high temperatures in copper oxides, intense research activities generated a tremendous progress in both, mastering the scientific challenges underpinning the understanding of the properties of these chemically and structurally complex materials as well as achieving a mature technology in preparing single phase bulk specimens -including single crystals -and epitaxially grown single crystalline thin films. This review covers in addition to more basic physics oriented developments mainly technological aspects of complex oxide thin film deposition as an enabling technology to explore the physics of these materials. It consists of two parts: after a brief introduction to the materials development prior to the discovery of superconducting copper oxides, a description of the relevant properties of copper oxide superconductors with focus on YBa 2 Cu 3 O 7-δ is given, followed by the coverage of essentials of complex oxide thin film deposition technology with the copper oxides at its core. Here, the major physical vapor deposition technologies (evaporation and oxide molecular beam technology, sputtering and pulsed laser deposition) are described followed by an overview of substrate requirements to deposit high quality thin films. Opportunities by choosing special substrates with unique properties far beyond the usual mechanical support for a film are introduced with examples aside from usual lattice mismatch induced strain effects. One is the continuous modification of the strain state by poling ferroelectric oxide substrates linked to a piezoelectric effect, the other is the nanoscale tailoring of substrate step-and-terrace structures resulting in a controllable generation of planar defects in complex oxides, thus contributing to the physics of flux-line pinning in cuprate superconductors. In the second part of this review, first some highlights of single layer thin film research are given such as to tailor thin film orientation, generating well defined antiphase boundaries in YBa 2 Cu 3 O 7-δ thin films as flux-line pinning centers as well as contributions to understand fluctuation conductivity in relation to the pseudogap state. In the last section new developments in high T c cuprate based heterostructures and superlattices are reviewed with a special focus on the opportunities offered by interface-induced electronic interactions.

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Vortex channeling along twin planes inYBa2Cu3

Cited by 101 publications

References 23 publications

Fluctuation conductivity in Y–Ba–Cu–O films with artificially produced defects

Fluctuation conductivity in Y–Ba–Cu–O films with artificially produced defects

Effect of sample size on the magnetic critical current density in nano-SiC dopedMgB2superconductors

Science and technology of cuprate-based high temperature superconductor thin films, heterostructures and superlattices—the first 30 years (Review Article)

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