On the superconductivity of K- or Rb-doped buckminsterfullerene C60

Jansen, L.; Block, R.; Lombardi, E.

doi:10.1016/0921-4534(91)90450-d

Cited by 17 publications

(14 citation statements)

References 37 publications

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“…We expect that this may be possible by analogy with electron-doped cuprates and alkali-doped fullerenes [50,51] in which the corresponding fl values lie to the rioht of the maximum in the coupling strength IW(fl)l, leading generally (see Eq. (7)) to negative values of dTc/dP.…”

Section: Summary Of Results and Concluding Remarksmentioning

confidence: 99%

“…On this basis we have earlier analyzed superconductivity in the cuprates, in particular the effect of doping and of pressure on critical temperatures [47-49, 52, 54], as well as superconductivity in alkali-doped fullerenes [50,51]. In the next Section we summarize the main aspects of the indirect-exchange approach to high-Tc superconductivity, referring for details to the literature mentioned.…”

Section: Discussionmentioning

confidence: 99%

“…Values of W, as a function of fl for different kv and with ct = 0.20 au z, as well as different ~ (i.e. different 'size' of the diamagnetic units) at kv = 0.341 au-l, are plotted in [48][49][50][51]. Taking 0t = 0.20 au -2, kv = 0.341 au-1, as an example, it is found that W < 0 for 0.11 < fl < 0.23 au -2, i.e.…”

Section: Formalismmentioning

confidence: 99%

“…The effects of doping, and of pressure, on critical temperatures in cuprates were analyzed in [49], with a recent extension to the new Hgcuprates where Tc reaches 160 K under high pressure [52]. Further generalization indicates that in alkali-doped C60, carbon-carbon double bonds can mediate pair formation [50,51], whereas in organic superconductors of the (BEDT-TTF) type, sulphur or selenium atoms may fulfill this role [53].…”

Section: Formalismmentioning

confidence: 99%

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Analysis of superconductivity in Ba1−xKxBiO3 on the basis of indirect-exchange mediated pairing

Jansen

Block

Stepankin

1995

Physica A: Statistical Mechanics and its Applications

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Analysis of superconductivity in BaC1C-CxKCxBiOC3 on the bais of indirect-exchange mediated pairing Jansen, L.; Block, R.; Stepankin, V. Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. AbstractAfter a critical survey of current interpretations of superconductivity in (Ba,K)BiO3, we present a quantitative analysis of this system, with emphasis on dependence of the critical temperature on potassium content and on pressure (external or 'chemical'). Adopting a BCS formalism, Cooper-pair formation is assumed not to be phonon-mediated, but to arise from indirect-exchange interactions between conduction electrons via oxygen anions (oxygen valence band), by analogy with previous analyses of cuprate high-T c superconductors. Numerical calculations are carried through with, and without, accounting for shrinkage of the lattice with increasing potassium content. Results for pressure gradients of T c, at varying doping, and T c under pressures up to 20 GPa, are compared with experimental data. Extension of the analysis to the bismuthate Ba(Pb,Bi)O 3 is outlined.

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Section: Summary Of Results and Concluding Remarksmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Formalismmentioning

confidence: 99%

Section: Formalismmentioning

confidence: 99%

See 2 more Smart Citations

Analysis of superconductivity in Ba1−xKxBiO3 on the basis of indirect-exchange mediated pairing

Jansen

Block

Stepankin

1995

Physica A: Statistical Mechanics and its Applications

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“…Further generalization shows that in alkali-doped C 60, carbon-carbon double bonds mediate pair formation [29], whereas in organic superconductors of the (BEDT-TTF) type, sulfur or selenium atoms may fulfill this role [30].…”

Section: Indirect-exchange Pairing In Superconductorsmentioning

confidence: 99%

Quantitative analysis of superconductivity in the Hg-cuprates. Comparison with the Tl2-series

Jansen

Block

1994

Physica A: Statistical Mechanics and its Applications

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Quantitative analysis of superconductivity in the Hg-cuprates. Comparison with the Tlabdasub2-series Jansen, L.; Block, R. General rightsIt is not permitted to download or to forward/distribute the text or part of it without the consent of the author(s) and/or copyright holder(s), other than for strictly personal, individual use, unless the work is under an open content license (like Creative Commons). Disclaimer/Complaints regulationsIf you believe that digital publication of certain material infringes any of your rights or (privacy) interests, please let the Library know, stating your reasons. In case of a legitimate complaint, the Library will make the material inaccessible and/or remove it from the website. Please Ask the Library: http://uba.uva.nl/en/contact, or a letter to: Library of the University of Amsterdam, Secretariat, Singel 425, 1012 WP Amsterdam, The Netherlands. You will be contacted as soon as possible. reproduced, at the pressures observed. They are due to two-dimensional characteristics of superconductivity in these systems. The anomalous behavior of T,(P) in the Tl,(N) compounds with pressure applied at ambient temperature is found to result from pressure-induced diffusion of oxygen anions from the (Tl-O), bilayers towards the Cu02 layers. Neither van Hove singularities nor pressure-induced changes of the hole concentration in the CuO, layers are found to play a role in superconductivity of these compounds.

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Viewpoint 12 — some remarks on the theory of high Tc cuprate superconductors

Ladik

1993

Journal of Molecular Structure: THEOCHEM

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On the superconductivity of K- or Rb-doped buckminsterfullerene C60

Cited by 17 publications

References 37 publications

Analysis of superconductivity in Ba1−xKxBiO3 on the basis of indirect-exchange mediated pairing

Analysis of superconductivity in Ba1−xKxBiO3 on the basis of indirect-exchange mediated pairing

Quantitative analysis of superconductivity in the Hg-cuprates. Comparison with the Tl2-series

Viewpoint 12 — some remarks on the theory of high Tc cuprate superconductors

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