Superfluid and normal-fluid densities in the high-Tc superconductors

D. B. Tanner, F. Gao, K. Kamarás, H. L. Liu, M. A. Quijada, D. B. Romero, Y. D. Yoon, A. Zibold, H. Berger, G. Margaritondo, L. Forró, R. J. Kelly, M. Onellion, G. Cao, J. E. Crow, O. Beom-Hoan, J. T. Markert, J. P. Rice, D. M. Ginsberg, Th Wolf

Research output: Contribution to journalArticle

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Abstract

In clean metallic superconductors, 100% of the mobile carriers participate in the condensate, so that the London penetration depth (which measures the electromagnetic screening by the superconductor) indicates charge densities comparable to those inferred from the free-carrier plasma frequency. In the cuprates, this is not the case, even though penetration depth measurements have shown a good correlation between superfluid density and superconducting transition temperature in the underdoped-to-optimally-doped part of the phase diagram. Optical measurements, which permit independent determination of the total doping-induced spectral weight and the superfluid density, show that in optimally doped materials only about 20% of the doping-induced spectral weight joins the superfluid. The rest remains in finite-frequency, midinfrared absorption. In underdoped materials, the superfluid fraction is even smaller. This result implies extremely strong coupling for these superconductors.

Original languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume341-348
DOIs
Publication statusPublished - Nov 2000

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Superconducting materials
Fluids
fluids
penetration
Doping (additives)
depth measurement
carrier frequencies
plasma frequencies
Charge density
optical measurement
cuprates
Superconducting transition temperature
Phase diagrams
condensates
Screening
screening
transition temperature
phase diagrams
electromagnetism
Plasmas

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Superfluid and normal-fluid densities in the high-Tc superconductors. / Tanner, D. B.; Gao, F.; Kamarás, K.; Liu, H. L.; Quijada, M. A.; Romero, D. B.; Yoon, Y. D.; Zibold, A.; Berger, H.; Margaritondo, G.; Forró, L.; Kelly, R. J.; Onellion, M.; Cao, G.; Crow, J. E.; Beom-Hoan, O.; Markert, J. T.; Rice, J. P.; Ginsberg, D. M.; Wolf, Th.

In: Physica C: Superconductivity and its Applications, Vol. 341-348, 11.2000.

Research output: Contribution to journalArticle

Tanner, DB, Gao, F, Kamarás, K, Liu, HL, Quijada, MA, Romero, DB, Yoon, YD, Zibold, A, Berger, H, Margaritondo, G, Forró, L, Kelly, RJ, Onellion, M, Cao, G, Crow, JE, Beom-Hoan, O, Markert, JT, Rice, JP, Ginsberg, DM & Wolf, T 2000, 'Superfluid and normal-fluid densities in the high-Tc superconductors', Physica C: Superconductivity and its Applications, vol. 341-348. https://doi.org/10.1016/S0921-4534(00)00970-9
Tanner, D. B. ; Gao, F. ; Kamarás, K. ; Liu, H. L. ; Quijada, M. A. ; Romero, D. B. ; Yoon, Y. D. ; Zibold, A. ; Berger, H. ; Margaritondo, G. ; Forró, L. ; Kelly, R. J. ; Onellion, M. ; Cao, G. ; Crow, J. E. ; Beom-Hoan, O. ; Markert, J. T. ; Rice, J. P. ; Ginsberg, D. M. ; Wolf, Th. / Superfluid and normal-fluid densities in the high-Tc superconductors. In: Physica C: Superconductivity and its Applications. 2000 ; Vol. 341-348.
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AU - Ginsberg, D. M.

AU - Wolf, Th

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