Anisotropy of the Nernst effect in textured Pb free Bi2223 superconductor

Ausloos, Marcel; Pȩkała, M.; Bougrine, Hassan; Łada, T.; Morawski, A.

doi:10.1016/0921-4534(95)00413-0

Cited by 8 publications

(8 citation statements)

References 17 publications

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“…Only fine measurements can record it [8,11,36]. A signal arises around 118 K (figure 8), which is higher than the onset temperatures for resistivity and thermoelectric power.…”

Section: Nernst Effectmentioning

confidence: 97%

“…In equations (11) and (12), is the superconducting gap parameter, ε n the energy of the bound quasiparticles in the vortex cores, n qp the Figure 15. Quasiparticle contribution to the electrothermal conductivity P qp as a function of the magnetic induction B at different temperatures.…”

Section: Electrothermal Conductivitymentioning

confidence: 99%

“…Recently we studied in detail the magnetotransport properties of various high critical temperature superconductors (HTS) [1][2][3][4][5][6][7][8][9][10][11][12]. In those papers we pointed out the interest of studying such materials in thermal gradients and in the presence of a magnetic field (see for example also the review papers by Huebener et al [13][14][15][16][17], Fischer [18], Clem [19]).…”

Section: Introductionmentioning

confidence: 99%

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Impact of Negative-Bias Temperature Instability on the Lifetime of Single-Gate CMOS Structures with Ultrathin (4–6 nm) Gate Oxides

Ogawa

Shimaya

Shiono

1996

Jpn. J. Appl. Phys.

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Various physical properties of a high-pressure made Bi 1.84 Pb 0.34 Sr 1.91 Ca 2.03 Cu 3.06 O x ceramic have been studied in the normal state and mixed state region, mainly from the point of view of transport properties. The electrical resistivity, the thermoelectric power and the Nernst effect are reported for a broad temperature range and for fields between 0 and 4 T. Derived physical parameters like the excess (integrated) properties, the behaviour of the percolation line(s) as a function of temperature and field, the so-called transport energy, and the so-called activation energies, the Ginzburg-Landau parameter and the thermal Hall angle field and temperature dependence are given and briefly compared with previous reports. We point out that in the region examined, the so-called percolation lines differ whether the transport coefficient is purely electrical or is electrothermal in nature. We point out that the 90 • thermal Hall angle temperature is the same as the thermoelectric percolation temperature. Finally we examine for the first time in such systems the behaviour of the so-called 'electrothermal conductivity'. Through a kinetic formalism using either an s-wave or a d-wave-like order parameter, we point out that the field dependence is quite different in the mixed state near the critical temperature. This allowed us to decide that the signature for a d-wave nature of the gap parameter exists for such transport properties near the critical temperature.

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“…Only fine measurements can record it [8,11,36]. A signal arises around 118 K (figure 8), which is higher than the onset temperatures for resistivity and thermoelectric power.…”

Section: Nernst Effectmentioning

confidence: 97%

Section: Electrothermal Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of Negative-Bias Temperature Instability on the Lifetime of Single-Gate CMOS Structures with Ultrathin (4–6 nm) Gate Oxides

Ogawa

Shimaya

Shiono

1996

Jpn. J. Appl. Phys.

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“…The latter process was found to contribute substantially to the transport properties of conventional (low-¹ A ) superconductors and to be of the same importance as the quansiparticle contribution. The situation in high-¹ A superconductor (HTS) materials, at least as far as the resistivity studies are concerned, but also for the cases of the thermoelectric power in a field [4,5] and the Nernst effect [5,6], is less clear. The quasiparticle contribution to dissipation, ¼ O , is expected to become especially significant in HTSs, provided that there exists [7] a nonvanishing quasiparticle density of states in the gap, , as for the d-wave symmetry gap.…”

Section: Introductionmentioning

confidence: 99%

“…Hohn et al [11] and others [5,6] more recently have proposed that galvano-magnetic effects studied in cuprates should be also influenced by the presence of the so-called bound (or localized) excitations inside flux cores as opposite to the unbound (extended) ones that are usually associated with the motion of the cores themselves.…”

Section: Introductionmentioning

confidence: 99%

Influence of a non-uniform current density profile on quasiparticle excitations and thermally activated flux creep in YBa2Cu3O7−σ

Sergeenkov

Gridin

Ausloos

1996

Zeitschrift für Physik B Condensed Matter

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Abstract. The transport current density, flowing radially from the center of a superconducting disk to its perimeter, in a so-called Corbino geometry, results in a double action on the vortex motion when the applied magnetic field is perpendicular to the disk's plane. First, the depinned vortices are set into a nearly circular motion in the plane of the disk. Second, the non-uniform current density profile activates the intrinsic weak links, resulting in a non negligible proximity dominated quasiparticle contribution. In turn, these intrinsic junctions impede the circular motion of vortices giving rise to a proximity influenced thermally activated flux creep. This provides a simple technique to deconvolute the flux motion and the quasiparticle induced components of the total dissipative resistivity broadening below ¹ A . The case for a YBaCuO disk is hereby examined and measured in this context. It is shown that such a deconvolution can be made and theoretical laws for the field dependences are also obtained and confirm the data. Furthermore, the paraconductivity region just above ¹ A (B) appears to be dominated by the macroscopic fluctuations accompanying the vortex core motion.

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Vortex Lattice Melting Probed by Nernst Effect

Pękała¹,

Ausloos²

1999

Physics and Materials Science of Vortex States, Flux Pinning and Dynamics

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Anisotropy of the Nernst effect in textured Pb free Bi2223 superconductor

Cited by 8 publications

References 17 publications

Impact of Negative-Bias Temperature Instability on the Lifetime of Single-Gate CMOS Structures with Ultrathin (4–6 nm) Gate Oxides

Impact of Negative-Bias Temperature Instability on the Lifetime of Single-Gate CMOS Structures with Ultrathin (4–6 nm) Gate Oxides

Influence of a non-uniform current density profile on quasiparticle excitations and thermally activated flux creep in YBa2Cu3O7−σ

Vortex Lattice Melting Probed by Nernst Effect

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