DOI: 10.1126/science.254.5033.842. Theoretical Fermi-Surface Properties and Superconducting Parameters for K <sub>3</sub> C <sub>60</sub> [Penn]

Theoretical Fermi-Surface Properties and Superconducting Parameters for K 3 C 60

10.1126/science.254.5033.842

Crossref journal-article

American Association for the Advancement of Science (AAAS)

Science (221)

Abstract

Quantitative theories of superconductivity in alkali-doped C 60 require an accurate and detailed description of the Fermi surface. First-principles calculations of Fermi-surface properties and electronic parameters for K 3 C 60 , the prototype fulleride-superconductor, are reported. The Fermi surface has two sheets; the first is free-electron-like, and the second is multiply-connected, forming two interlocked symmetry-equivalent pieces that never touch. The calculated (clean limit) London penetration depth is λ = 1600 Å. Comparing the Fermi velocity with the experimental coherence length leads to a superconducting pairing strength λ ∼ 5, indicating very strong coupling. Partial nesting in the second Fermi-surface sheet may favor coupling to short-wavelength 〈 q ,0,0〉 optic modes.

Bibliography

Erwin, S. C., & Pickett, W. E. (1991). Theoretical Fermi-Surface Properties and Superconducting Parameters for K 3 C 60. Science, 254(5033), 842â845.

Authors 2

Steven C. Erwin (first)
Warren E. Pickett (additional)

References 15 Referenced 220

Allen, P. B., Modem Trends in the Theory of Condensed Matter: 388 (1980). / Modem Trends in the Theory of Condensed Matter (1980)
10.1126/science.252.5011.1417
ERWIN, S.C., ELECTRONIC-STRUCTURE OF CRYSTALLINE K6C60, PHYSICAL REVIEW LETTERS 67: 1610 (1991). (10.1103/PhysRevLett.67.1610) / PHYSICAL REVIEW LETTERS (1991)
10.1038/350600a0
HOLCZER, K, CRITICAL MAGNETIC-FIELDS IN THE SUPERCONDUCTING STATE OF K3C60, PHYSICAL REVIEW LETTERS 67: 271 (1991). (10.1103/PhysRevLett.67.271) / PHYSICAL REVIEW LETTERS (1991)
KELTY, S.P., SUPERCONDUCTIVITY AT 30-K IN CESIUM-DOPED C60, NATURE 352: 223 (1991). (10.1038/352223a0) / NATURE (1991)
MARTINS J.L. unpublished data.
PICKETT, W.E., QUASI-PARTICLE SCATTERING ACROSS THE FERMI-SURFACE IN LA2-XMXCUO4, PHYSICA B 165: 1055 (1990). / PHYSICA B (1990)
ROSSEINSKY, M.J., SUPERCONDUCTIVITY AT 28 K IN RBXC60, PHYSICAL REVIEW LETTERS 66: 2830 (1991). (10.1103/PhysRevLett.66.2830) / PHYSICAL REVIEW LETTERS (1991)
SAITO, S, COHESIVE MECHANISM AND ENERGY-BANDS OF SOLID C60, PHYSICAL REVIEW LETTERS 66: 2637 (1991). (10.1103/PhysRevLett.66.2637) / PHYSICAL REVIEW LETTERS (1991)
STEPHENS, P.W., STRUCTURE OF SINGLE-PHASE SUPERCONDUCTING K3C60, NATURE 351: 632 (1991). (10.1038/351632a0) / NATURE (1991)
STOLLHOFF G unpublished data.
10.1038/352222a0
UEMURA, Y.J., MAGNETIC-FIELD PENETRATION DEPTH IN K3C60 MEASURED BY MUON SPIN RELAXATION, NATURE 352: 605 (1991). (10.1038/352605a0) / NATURE (1991)
ZHANG F.C. unpublished data.

Dates

Type	When
Created	18 years, 10 months ago (Oct. 5, 2006, 6:10 p.m.)
Deposited	1 year, 7 months ago (Jan. 12, 2024, 6:36 p.m.)
Indexed	1 month, 3 weeks ago (July 4, 2025, 8:46 a.m.)
Issued	33 years, 9 months ago (Nov. 8, 1991)
Published	33 years, 9 months ago (Nov. 8, 1991)
Published Print	33 years, 9 months ago (Nov. 8, 1991)

Funders 0

None

BibTeX

@article{Erwin_1991, title={Theoretical Fermi-Surface Properties and Superconducting Parameters for K 3 C 60}, volume={254}, ISSN={1095-9203}, url={http://dx.doi.org/10.1126/science.254.5033.842}, DOI={10.1126/science.254.5033.842}, number={5033}, journal={Science}, publisher={American Association for the Advancement of Science (AAAS)}, author={Erwin, Steven C. and Pickett, Warren E.}, year={1991}, month=nov, pages={842–845} }

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