The pairing mechanism in HTSC investigated by electronic Raman scattering

A. Hoffmann; P. Lemmens; L. Winkeler; G. Güntherodt

doi:10.1007/BF00752288

The pairing mechanism in HTSC investigated by electronic Raman scattering

A. Hoffmann, P. Lemmens, L. Winkeler, G. Güntherodt

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Abstract

By means of electronic Raman scattering we investigated the symmetry of the energy gap 2Δ(→k), its temperature dependence and its variation with doping of well characterized Bi₂Sr₂CaCu₂O_8+δ single crystals. The oxygen content δ was varied between the under- and the overdoped regime by subsequently annealing the same single crystal in Ar and in O₂, respectively. The symmetry analysis of the polarized electronic Raman scattering is consistent with a d_x²-y²-wave symmetry of the energy gap in both regimes. The gap ratio 2Δ_max/k_BT_c and its temperature dependence changes with doping similar to predictions of theories based on paramagnon coupling.

Original language	English (US)
Pages (from-to)	201-203
Number of pages	3
Journal	Journal of Low Temperature Physics
Volume	99
Issue number	3-4
DOIs	https://doi.org/10.1007/BF00752288
State	Published - May 1995
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

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10.1007/BF00752288

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title = "The pairing mechanism in HTSC investigated by electronic Raman scattering",

abstract = "By means of electronic Raman scattering we investigated the symmetry of the energy gap 2Δ(→k), its temperature dependence and its variation with doping of well characterized Bi2Sr2CaCu2O8+δ single crystals. The oxygen content δ was varied between the under- and the overdoped regime by subsequently annealing the same single crystal in Ar and in O2, respectively. The symmetry analysis of the polarized electronic Raman scattering is consistent with a dx2-y2-wave symmetry of the energy gap in both regimes. The gap ratio 2Δmax/kBTc and its temperature dependence changes with doping similar to predictions of theories based on paramagnon coupling.",

author = "A. Hoffmann and P. Lemmens and L. Winkeler and G. G{\"u}ntherodt",

year = "1995",

month = may,

doi = "10.1007/BF00752288",

language = "English (US)",

volume = "99",

pages = "201--203",

journal = "Journal of Low Temperature Physics",

issn = "0022-2291",

publisher = "Springer New York",

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T1 - The pairing mechanism in HTSC investigated by electronic Raman scattering

AU - Hoffmann, A.

AU - Lemmens, P.

AU - Winkeler, L.

AU - Güntherodt, G.

PY - 1995/5

Y1 - 1995/5

N2 - By means of electronic Raman scattering we investigated the symmetry of the energy gap 2Δ(→k), its temperature dependence and its variation with doping of well characterized Bi2Sr2CaCu2O8+δ single crystals. The oxygen content δ was varied between the under- and the overdoped regime by subsequently annealing the same single crystal in Ar and in O2, respectively. The symmetry analysis of the polarized electronic Raman scattering is consistent with a dx2-y2-wave symmetry of the energy gap in both regimes. The gap ratio 2Δmax/kBTc and its temperature dependence changes with doping similar to predictions of theories based on paramagnon coupling.

AB - By means of electronic Raman scattering we investigated the symmetry of the energy gap 2Δ(→k), its temperature dependence and its variation with doping of well characterized Bi2Sr2CaCu2O8+δ single crystals. The oxygen content δ was varied between the under- and the overdoped regime by subsequently annealing the same single crystal in Ar and in O2, respectively. The symmetry analysis of the polarized electronic Raman scattering is consistent with a dx2-y2-wave symmetry of the energy gap in both regimes. The gap ratio 2Δmax/kBTc and its temperature dependence changes with doping similar to predictions of theories based on paramagnon coupling.

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DO - 10.1007/BF00752288

M3 - Article

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JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 3-4

ER -

The pairing mechanism in HTSC investigated by electronic Raman scattering

Abstract

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