Effect of elastic stress on the resistivity and Tc of (Bi, Pb)2Sr2Can−1CunOx

Chen, Xin-Fen; Tessema, G. X.; Skove, M. J.

doi:10.1016/0921-4534(91)90121-e

Cited by 35 publications

(18 citation statements)

References 7 publications

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“…Uni-axial stress and strain experiments on Bi-2212 whiskers show a reduction in T,. when the a-or 0-axis is clongated and the c-axis is compressed [5], [6]. Based on the similar I,(&) behaviour it is expected that deformed Bi-22 12 and 2223 behave essentially the same.…”

Section: The Reversibility Of 1 For Small Strainsmentioning

confidence: 71%

Small and repetitive axial strain reducing the critical current in BSCCO/Ag superconductors

Haken

Beuink

Kate

1997

IEEE Trans. Appl. Supercond.

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-The critical current in two types of axially deformed BSCCO/Ag tape conductors is investigated. An Z, reduction is observed for small axial strains (ranging from 0 to 0.3%) with a characteristic slope di,/de = -5+1 (relative i, change per relative change in length). In the case of an axial compression there is a more pronounced I , reduction. For small axial strains (<0.3%) a certain reversible change in I , is observed. This reversible behaviour occurs in combination with an irreversible reduction that increases when the number of strain cycles is increased. The reversible part of the I , change remains for a large number of strain cycles (>10000) and has a similar negative slope for both compressive and tensile strains. It is proposed that the reversible I , change is correlated to a non-hydrostatic lattice deformation. The I , versus strain behaviour is in good agreement with an earlier proposed model.

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Section: The Reversibility Of 1 For Small Strainsmentioning

confidence: 71%

Small and repetitive axial strain reducing the critical current in BSCCO/Ag superconductors

Haken

Beuink

Kate

1997

IEEE Trans. Appl. Supercond.

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“…For example, in HgBa 2 Ca 2 Cu 3 O 4 , which has the highest T c among HTSCs, T c rises from 135 K to 164 K in a hydrostatic pressure [2]. In addition to mechanical pressure [3,4,5,6,7], the effect of epitaxial strain in thin films grown on single crystalline substrates [8,9,10], and the effect of "chemical pressure", where the lattice constants are varied through substitution of ions with different ionic radii [11,12,13], have been studied so far. The effects of epitaxial strain and "chemical pressure" on T c are consistent with the mechanical pressure in many cases [3,4,5,6,7,8,9,10], but the mechanism of the T c changes has not been understood yet.…”

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confidence: 99%

“…In addition to mechanical pressure [3,4,5,6,7], the effect of epitaxial strain in thin films grown on single crystalline substrates [8,9,10], and the effect of "chemical pressure", where the lattice constants are varied through substitution of ions with different ionic radii [11,12,13], have been studied so far. The effects of epitaxial strain and "chemical pressure" on T c are consistent with the mechanical pressure in many cases [3,4,5,6,7,8,9,10], but the mechanism of the T c changes has not been understood yet. Also, differences in T c between different cuprate families are expected to provide crucial information about the mechanism of high-T c superconductivity and have been discussed extensively [14,15].…”

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confidence: 99%

Effects of chemical pressure on the Fermi surface and band dispersion of the electron-doped high-Tcsuperconductors

et al. 2009

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We have performed angle-resolved photoemission spectroscopy (ARPES) measurements and first-principles electronic structure calculations on the electron-doped high-Tc superconductors Ln1.85Ce0.15CuO4 (Ln = Nd, Sm, and Eu). The observed Fermi surface and band dispersion show such changes that with decreasing ionic size of Ln 3+ , the curvature of the Fermi surface or −t ′ /t decreases, where t and t ′ are transfer integrals between the nearest-neighbor and next-nearestneighbor Cu sites, respectively. The increase of t with chemical pressure is found to be significant, which may explain the apparently inconsistent behavior seen in the hole-doped La2−xSrxCuO4 under epitaxial strain [M. Abrecht et al., Phys. Rev. Lett. 91, 057002 (2003)]. A gap due to the antiferromagnetism opens even in the nodal region for the Sm and Eu compounds, and the gap size increases in going from Ln = Sm to Eu.

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“…summarizes values of the uniaxial pressure and strain coefficients[8][9][10][11][12][13][14] . For most systems, the in-plane and out-of-plane T c derivatives have opposite signs.…”

mentioning

confidence: 99%