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Keener, C. D.; Trawick, Matthew L.; Ammirata, S. M.; Hebboul, S. E.; Garland, J. C.

doi:10.1103/physrevb.55.r708

Cited by 23 publications

(18 citation statements)

References 8 publications

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“…A similar view was expressed earlier by Eltsev and Rapp [2]. This is in contrast to the conclusions of Safar et al [3] and Keener et al [4], who argued that the local conductivity model (LCM) cannot satisfactorily account for their data.…”

Section: Dissipation In the Mixed State: Local Or Nonlocal?supporting

confidence: 61%

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Dissipation in the Mixed State: Local or Nonlocal?

Levin¹

1997

Phys. Rev. Lett.

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Section: Dissipation In the Mixed State: Local Or Nonlocal?supporting

confidence: 61%

“…[1] and [2] reveals that there is no real contradiction between all existing experiments [1][2][3][4]: The results of [1,2] also exhibit a strong deviation from LCM quantitatively similar, albeit more subtle, to that found in [3,4].…”

Section: Dissipation In the Mixed State: Local Or Nonlocal?mentioning

confidence: 60%

Dissipation in the Mixed State: Local or Nonlocal?

Levin¹

1997

Phys. Rev. Lett.

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“…Similar evidence for nonlocal effects in Bi-Sr-Ca-Cu-O has been reported. 2 It should be pointed out that the nonlocal interpretation has been questioned both on theoretical 3 and experimental 4 grounds. It should also be noted that the large effects seen by Safar et al 1 were in heavily twinned samples.…”

Section: Introductionmentioning

confidence: 99%

Perturbative studies of the conductivity in the vortex-liquid regime

Blum

Moore

1997

Phys. Rev. B

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We calculate the Aslamazov-Larkin term of the conductivity in the presence of a magnetic field applied along the c-axis from the time-dependent Ginzburg-Landau equation perturbatively using two approaches. In the first a uniform electric field is explicitly applied; in the second the Kubo formula is used to extract the linear response. The former yields a version of the flux-flow formula for the uniform ab-plane conductivity, sigma_{xx}(k=0), that holds to all orders of perturbation theory. Obtaining the same result from the Kubo formula requires considerable cancellation of terms. We also use the Kubo calculation to examine the nonlocal ab-plane conductivity, sigma_{xx}( k \neq 0) (where the cancellations no longer occur), as well as the nonlocal c-axis conductivity sigma_{zz}( k \neq 0), and look for the perturbative precursors of the growing viscous length scales. In addition, we consider the effects of weak disorder -- both uncorrelated (point defects) and correlated (columnar and planar defects).Comment: 20 pages, 7 figures, Revtex, to be published in PR

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“…In their measurements on single-crystal BSCCO, Keener et al 10 never observe the ratios V bot /V top and V right /V left simultaneously approaching one. Nevertheless, when they perform a Montgomery analysis on their data, they do see discrepancies in the apparent ratio xx (a) / zz (a) .…”

Section: Introductionmentioning

confidence: 92%

Nonlocal conductivity in high-temperature superconductors

1998

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We examine nonlocal conductivity in high-temperature superconductors from a phenomenological point of view. One wants to deduce the properties of the conductivity, especially its inherent length scales, from the transport data. Although this is a challenging inverse problem, complicated further by the experimental data not being completely self-consistent, we have made some progress. We find that if a certain form for the conductivity is postulated then one requires positive ''viscosity'' coefficients to reproduce some of the experimental results. We are able to show that the effects of surfaces on the conductivity are likely to be important and draw comparisons with the treatment of the surface within the hydrodynamic approach put forth by Huse and Majumdar. We also develop an approximation scheme for the conductivity which is more robust than the hydrodynamic one, since it is stable for both positive and negative viscosity coefficients, and discuss the results obtained using it. ͓S0163-1829͑98͒04609-8͔

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Nonlocal conductivity inBi2Sr2
C. D. Keener
¹
,
Matthew L. Trawick
²
,
S. M. Ammirata
³

et al.

Cited by 23 publications

References 8 publications

Dissipation in the Mixed State: Local or Nonlocal?

Dissipation in the Mixed State: Local or Nonlocal?

Perturbative studies of the conductivity in the vortex-liquid regime

Nonlocal conductivity in high-temperature superconductors

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Nonlocal conductivity inBi2Sr2C. D. Keener1, Matthew L. Trawick2, S. M. Ammirata3 et al.

Cited by 23 publications

References 8 publications

Dissipation in the Mixed State: Local or Nonlocal?

Dissipation in the Mixed State: Local or Nonlocal?

Perturbative studies of the conductivity in the vortex-liquid regime

Nonlocal conductivity in high-temperature superconductors

Contact Info

Product

Resources

About

Nonlocal conductivity inBi2Sr2
C. D. Keener
¹
,
Matthew L. Trawick
²
,
S. M. Ammirata
³

et al.