Translational and bond-orientational order in the vortex lattice of the high-<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="italic">T</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">c</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>superconductor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Bi</mml:mi></mml:mrow><mml:mrow><mml:mn>

Grier, David G.; Murray, Cherry A.; Bolle, C. A.; Gammel, P. L.; Bishop, David J.; Mitzi, D. B.; Kapitulnik, A.

doi:10.1103/physrevlett.66.2270

Cited by 117 publications

(67 citation statements)

References 34 publications

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“…With the increase in field, the interaction effects strengthen and consequently, a sparse disordered vortex configuration can progressively change into an ordered one, as has been demonstrated earlier in Refs. [43,44]. This is apparent from Fig.…”

Section: Discussionsupporting

confidence: 59%

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb₃Rh₄Sn₁₃

Kumar

Singh

Thamizhavel

et al. 2015

Supercond. Sci. Technol.

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We present here some striking discrepancies in the results of ac and dc magnetization measurements performed in a single crystal of low Tc superconductor, Yb3Rh4Sn13. Fingerprint of a transition from an ordered vortex lattice a la Bragg glass (BG) phase to a partially-disordered vortex glass (VG) like phase gets unearthed under the influence of an ac driving force present inevitably in the isothermal ac susceptibility (χ ′ (H)) measurements. In contrast to its well -known effect of improving the state of spatial order in the vortex matter, the ac drive is surprisingly found to promote disorder by assisting the BG to VG transition to occur at a lower field value in this compound. On the other hand, the isothermal dc magnetization (M -H) scans, devoid of such a driving force, do not reveal this transition; they instead yield signature of another order-disorder transition at elevated fields, viz., peak effect (PE), located substantially above the BG to VG transition observed in χ ′ (H) runs. Further, the evolution of PE feature with increasing field as observed in isofield ac susceptibility (χ ′ (T )) plots indicates emergence of an ordered vortex configuration (BG) from a disordered phase above a certain field, H * (∼ 4 kOe). Below H * , the vortex matter created via field -cooling (FC) is found to be better spatially ordered than that prepared in zero field -cooled (ZFC) mode. This is contrary to the usual behavior anticipated near the high-field order-disorder transition (PE) wherein a FC state is supposed to be a supercooled disordered phase and the ZFC state is comparatively better ordered.

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Section: Discussionsupporting

confidence: 59%

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb₃Rh₄Sn₁₃

Kumar

Singh

Thamizhavel

et al. 2015

Supercond. Sci. Technol.

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“…The anomalously large translational correlation lengths inferred from magnetic decoration experiments on BSCCO [13] and the resolution limited Bragg peaks obtained in neutron scattering from the mixed phase [14] in this material at small H, support the existence of a Bragg glass phase in type-II superconductors. Hall probe measurements [15] see a single first-order, temperature-driven melting transition out of the Bragg glass at such fields [14][15][16][17].…”

Section: Much Theoretical Attention Hasmentioning

confidence: 83%

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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“…A reentrant disordering has been found in the low field regime where the vortex lattice again softens [4]. Bitter decoration experiments have also provided evidence for the disordering of the vortex lattice at low fields [10]. In each of these cases the critical current J c is high due to the dominance of pinning.…”

Section: Introductionmentioning

confidence: 82%

Critical depinning force and vortex lattice order in disordered superconductors

2001

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We simulate the ordering of vortices and its effects on the critical current in superconductors with varied vortex-vortex interaction strength and varied pinning strengths for a two-dimensional system. For strong pinning the vortex lattice is always disordered and the critical depinning force only weakly increases with decreasing vortex-vortex interactions. For weak pinning the vortex lattice is defect free until the vortex-vortex interactions have been reduced to a low value, when defects begin to appear with a simultaneous rapid increase in the critical depinning force. In each case the depinning force shows a maximum for non-interacting vortices. The relative height of the peak increases and the peak width decreases for decreasing pinning strength in excellent agreement with experimental trends associated with the peak effect. We show that scaling relations exist between the distance between defects in the vortex lattice and the critical depinning force.

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Translational and bond-orientational order in the vortex lattice of the high-TcsuperconductorBi

Cited by 117 publications

References 34 publications

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb₃Rh₄Sn₁₃

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb₃Rh₄Sn₁₃

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

Critical depinning force and vortex lattice order in disordered superconductors

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Translational and bond-orientational order in the vortex lattice of the high-TcsuperconductorBi

Cited by 117 publications

References 34 publications

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb3Rh4Sn13

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb3Rh4Sn13

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

Critical depinning force and vortex lattice order in disordered superconductors

Contact Info

Product

Resources

About

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb₃Rh₄Sn₁₃

Unveiling of Bragg glass to vortex glass transition by an ac driving force in a single crystal of Yb₃Rh₄Sn₁₃