Nature of the Driving Force in Flux Creep Phenomena

Friedel, J.; Gennes, P. G. de; Matricon, Julien

doi:10.1063/1.1753804

Cited by 242 publications

(61 citation statements)

References 9 publications

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“…The same idea at very low temperatures has been published firstly in 1963 [3] for the intermediate state of London-type superconductor, and in 1967 for the mixed state of type-II superconductors [4]. In those years, studies of the entropy flow in the superconductors had been flourishingly developed [5][6][7][8][9]. However, no industrial trial has been attempted on gas (He) liquefaction because of no serious needs.…”

Section: Introductionmentioning

confidence: 96%

Thermo-magnetic refrigeration as applied to hydrogen liquefaction I. Fundamentals and type-II superconductors

Ohta¹

2007

International Journal of Hydrogen Energy

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Section: Introductionmentioning

confidence: 96%

Thermo-magnetic refrigeration as applied to hydrogen liquefaction I. Fundamentals and type-II superconductors

Ohta¹

2007

International Journal of Hydrogen Energy

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“…Dabei erfolgt so lange eine FlieSbewegung des FluBliniensystems, bis sich der FluBdichtegradient wieder auf den der Gleichgewichtsbeziehung f L = f P entsprechenden Wert erniedrigt hat. Nach Friedel et al [2] Pp(r) = -grad U p ( r ) .…”

Section: Einfiihrung Die Technisch Bedeutsame Eigenschaft Harter Suprunclassified

Statistische Theorie der Haftkraft von Flußliniensystemen in harten Supraleitern. I. Eigenschaften des statistischen Kraftfeldes

Kornfeld

Kronmüller

1971

Physica Status Solidi (b)

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This paper is concerned with the mathematical properties of the random field of force Fp( T ) acting on a single line element of a fluxline due to a statistical distribution of the defects. With the assumption of a linear interaction between fluxlines and defects it follows from the central limit theorem that F p ( r ) corresponds t o a Gaussian distribution. I n this case the complete statistical information on F p ( r ) is contained in the correlation matrix B(a), from which we obtain the wavelength, the mean amplitude, and the anisotropy of the random field F p ( r ) . These quantities are determined for edge dislocations parallel to the fluxlines. The dislocation-fluxline interaction used is the socalled volume effect. For sufficiently high dislocation densities (e 2 l/p) the wavelength l p is shown to be independent of e (Zp e 2n l), while the mean amplitude (dispersion) is proportional to 15.

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“…However, the observed voltage indicates that E is constant in time implying a drag force must exist to balance the Lorentz force. This force balance was proposed by Kim in the form [2][3][4][5] …”

Section: Introductionmentioning

confidence: 99%

Study of the pinned vortex fraction in the single crystal YBaCuO films

Hafid

Taoufik

Bouaaddi

et al. 2013

MATEC Web of Conferences

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Abstract. In this work we intend to study the pinned vortex fraction in type II superconductors. The sample used is the YBa2Cu3O7-γ . In continuation one will study the variations of this fraction according to the transport current density for two values of magnetic field (H = 0.6 T and H = 1.2 T) , and different values of temperature. The studied sample is a monocristalline YBaCuO thin film deposited by the ablation laser method on the surface (001) of a SrTiO3 substrate. In zero magnetic field, the resistance vanished a Tc = 90 K. The C-axis of YBaCuO is perpendicular to surface of the film. Electrodes of measurement are in gold and deposited on the surface of the sample in situ by evaporation. The film has a thickness of 400 nm, and a width 7.53 µm. The distance between electrodes of power measurement is 135 µm. Contact resistances were less than 1 .

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Nature of the Driving Force in Flux Creep Phenomena

Cited by 242 publications

References 9 publications

Thermo-magnetic refrigeration as applied to hydrogen liquefaction I. Fundamentals and type-II superconductors

Thermo-magnetic refrigeration as applied to hydrogen liquefaction I. Fundamentals and type-II superconductors

Statistische Theorie der Haftkraft von Flußliniensystemen in harten Supraleitern. I. Eigenschaften des statistischen Kraftfeldes

Study of the pinned vortex fraction in the single crystal YBaCuO films

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