Vortex-glass transition in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mo>(</mml:mo><mml:mi mathvariant="normal">K</mml:mi><mml:mo>,</mml:mo><mml:mi mathvariant="normal">B</mml:mi><mml:mi mathvariant="normal">a</mml:mi><mml:mo>)</mml:mo><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">BiO</mml:mi></mml:mrow><mml:mrow><mml:mn>3</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>cubic superconductor

Klein, Thierry; Conde-Gallardo, A.; Marcus, J.; Escribe-Filippini, C.; Samuely, P.; Szabó, P.; Jansen, A. G. M.

doi:10.1103/physrevb.58.12411

Cited by 41 publications

(46 citation statements)

References 33 publications

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“…2 of this paper [128]. In this system, as in the NCCO system discussed previously, the transition line between the quasilattice and the glassy state always lies below the transition line separating the glass from the liquid.…”

Section: (Kba)biomentioning

confidence: 88%

“…2. Several authors have commented [128], on the relation of these simulation results to their experimental data. Some of the ideas presented here also have overlaps with recent work by Kierfeld and Vinokur [24].…”

Section: (Kba)biomentioning

confidence: 99%

“…In this system, as in the NCCO system discussed previously, the transition line between the quasilattice and the glassy state always lies below the transition line separating the glass from the liquid. Klein and collaborators comment that the SANS data in this system support the connection of the fishtail effect with the transition to a glass out of the quasi-lattice BrG phase [128]. In addition, another interesting feature of the data is the relatively smooth decrease in the intensity of a Bragg peak on field scans, while the width of the peak remains virtually constant, suggesting a relatively high degree of local correlations in the putative vortex glass phase, as we would expect for a multi-domain solid.…”

Section: (Kba)biomentioning

confidence: 99%

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Phase behavior of type-II superconductors with quenched point pinning disorder: A phenomenological proposal

Menon

2002

Phys. Rev. B

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A general phenomenology for phase behaviour in the mixed phase of type-II superconductors with weak point pinning disorder is outlined. We propose that the "Bragg glass" phase generically transforms via two separate thermodynamic phase transitions into a disordered liquid on increasing the temperature. The first transition is into a glassy phase, topologically disordered at the largest length scales; current evidence suggests that it lacks the longranged phase correlations expected of a "vortex glass". This phase has a significant degree of short-ranged translational order, unlike the disordered liquid, but no quasi-long range order, in contrast to the Bragg glass. This glassy phase, which we call a "multi-domain glass", is confined to a narrow sliver at intermediate fields, but broadens out both for much larger and much smaller field values. The multi-domain glass may be a "hexatic glass"; alternatively, its glassy properties may originate in the replica symmetry breaking envisaged in recent theories of the structural glass transition. Estimates for translational correlation lengths in the multi-domain glass indicate that * Email:menon@imsc.ernet.in 1 they can be far larger than the interline spacing for weak disorder, suggesting a plausible mechanism by which signals of a two-step transition can be obscured. Calculations of the Bragg glass-multi-domain glass and the multidomain glass-disordered liquid phase boundaries are presented and compared to experimental data. We argue that these proposals provide a unified picture of the available experimental data on both high-T c and low-T c materials, simulations and current theoretical understanding.

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Section: (Kba)biomentioning

confidence: 88%

Section: (Kba)biomentioning

confidence: 99%

Section: (Kba)biomentioning

confidence: 99%

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Phase behavior of type-II superconductors with quenched point pinning disorder: A phenomenological proposal

Menon

2002

Phys. Rev. B

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“…So the XY spin glass is expected to be used to interpret the phenomena observed in high-T c cuprate superconductors, such as vor-tex glass phase [27,28,29], a true superconducting state with vanishing linear resistivity. The evidences to support the existence of this phase have been reported in many experiments [30,31].…”

Section: Introductionmentioning

confidence: 54%

Large-scale dynamical simulations of the three-dimensionalXYspin glass

Chen

2009

Phys. Rev. B

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Large-scale simulations have been performed in the current-driven three-dimensional XY spin glass with resistively-shunted junction dynamics for sample sizes up to 64 3 . It is observed that the linear resistivity at low temperatures tends to zero, providing a strong evidence of a finite temperature phase-coherence (i.e. spin-glass) transition. Dynamical scaling analysis demonstrates that a perfect collapse of current-voltage data can be achieved. The obtained critical exponents agree with those in equilibrium Monte Carlo simulations, and are compatible with those observed in various experiments on high-Tc cuprate superconductors. It is suggested that the spin and the chirality order simultaneously. A genuine continuous depinning transition is found at zero temperature. For low temperature creep motion, critical exponents are evaluated, and a non-Arrhenius creep motion is observed in the low temperature ordered phase. It is proposed that the XY spin glass gives an effective description of the transport properties in high-Tc superconductors with d-wave symmetry.

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“…The most widely researched material is YBa 10 and critical behavior has even been reported in some low-T c systems.…”

mentioning

confidence: 99%

Normal-superconducting phase transition mimicked by current noise

et al. 2004

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As a superconductor goes from the normal state into the superconducting state, the voltage vs. current characteristics at low currents change from linear to non-linear. We show theoretically and experimentally that the addition of current noise to non-linear voltage vs. current curves will create ohmic behavior. Ohmic response at low currents for temperatures below the critical temperature Tc mimics the phase transition and leads to incorrect values for Tc and the critical exponents ν and z. The ohmic response occurs at low currents, when the applied current I0 is smaller than the width of the probability distribution σI , and will occur in both the zero-field transition and the vortex-glass transition. Our results indicate that the transition temperature and critical exponents extracted from the conventional scaling analysis are inaccurate if current noise is not filtered out. This is a possible explanation for the wide range of critical exponents found in the literature.

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Vortex-glass transition in the(K,Ba)BiO3cubic superconductor

Cited by 41 publications

References 33 publications

Phase behavior of type-II superconductors with quenched point pinning disorder: A phenomenological proposal

Phase behavior of type-II superconductors with quenched point pinning disorder: A phenomenological proposal

Large-scale dynamical simulations of the three-dimensionalXYspin glass

Normal-superconducting phase transition mimicked by current noise

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