Nonmonotonic dx(2)-y(2) superconducting order parameter in Nd2-xCexCuO4

Girsh Blumberg, A. Koitzsch, A. Gozar, B. S. Dennis, C. A. Kendziora, P. Fournier, R. L. Greene

Research output: Contribution to journalArticle

140 Citations (Scopus)

Abstract

A nonmonotonic d(x2-y2) superconducting order parameter was revealed by low energy polarized electronic Raman scattering of the electron-doped superconductor Nd2-xCexCuO4 (NCCO). It had a maximum gap of 4.4 kBTc at Fermi surface intersections with an antiferromagnetic Brillouin zone. A smaller gap of 3.3 kBTc at fermionic Brillouin zone boundaries was also observed. The role of antiferromagnetic fluctuations and the similarity in the origin of superconductivity for electron and hole-doped cuprates were emphasized by the gap enhancement in the vicinity of the hot spots.

Original languageEnglish (US)
Article number107002
Pages (from-to)1070021-1070024
Number of pages4
JournalPhysical Review Letters
Volume88
Issue number10
StatePublished - Mar 11 2002
Externally publishedYes

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Brillouin zones
intersections
cuprates
Fermi surfaces
electrons
superconductivity
Raman spectra
augmentation
electronics
energy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Blumberg, G., Koitzsch, A., Gozar, A., Dennis, B. S., Kendziora, C. A., Fournier, P., & Greene, R. L. (2002). Nonmonotonic dx(2)-y(2) superconducting order parameter in Nd2-xCexCuO4. Physical Review Letters, 88(10), 1070021-1070024. [107002].
Blumberg, Girsh ; Koitzsch, A. ; Gozar, A. ; Dennis, B. S. ; Kendziora, C. A. ; Fournier, P. ; Greene, R. L. / Nonmonotonic dx(2)-y(2) superconducting order parameter in Nd2-xCexCuO4. In: Physical Review Letters. 2002 ; Vol. 88, No. 10. pp. 1070021-1070024.
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Blumberg, G, Koitzsch, A, Gozar, A, Dennis, BS, Kendziora, CA, Fournier, P & Greene, RL 2002, 'Nonmonotonic dx(2)-y(2) superconducting order parameter in Nd2-xCexCuO4', Physical Review Letters, vol. 88, no. 10, 107002, pp. 1070021-1070024.

Nonmonotonic dx(2)-y(2) superconducting order parameter in Nd2-xCexCuO4. / Blumberg, Girsh; Koitzsch, A.; Gozar, A.; Dennis, B. S.; Kendziora, C. A.; Fournier, P.; Greene, R. L.

In: Physical Review Letters, Vol. 88, No. 10, 107002, 11.03.2002, p. 1070021-1070024.

Research output: Contribution to journalArticle

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AU - Blumberg, Girsh

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AU - Gozar, A.

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AU - Kendziora, C. A.

AU - Fournier, P.

AU - Greene, R. L.

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AB - A nonmonotonic d(x2-y2) superconducting order parameter was revealed by low energy polarized electronic Raman scattering of the electron-doped superconductor Nd2-xCexCuO4 (NCCO). It had a maximum gap of 4.4 kBTc at Fermi surface intersections with an antiferromagnetic Brillouin zone. A smaller gap of 3.3 kBTc at fermionic Brillouin zone boundaries was also observed. The role of antiferromagnetic fluctuations and the similarity in the origin of superconductivity for electron and hole-doped cuprates were emphasized by the gap enhancement in the vicinity of the hot spots.

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Blumberg G, Koitzsch A, Gozar A, Dennis BS, Kendziora CA, Fournier P et al. Nonmonotonic dx(2)-y(2) superconducting order parameter in Nd2-xCexCuO4. Physical Review Letters. 2002 Mar 11;88(10):1070021-1070024. 107002.