The pairing mechanism in HTSC investigated by electronic Raman scattering
- Physikalisches Institut der RWTH, Aachen (Germany)
By means of electronic Raman scattering we investigated the symmetry of the energy gap 2{Delta}(k), its temperature dependence and its variation with doping of well characterized Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub 2+{delta}} single crystals. The oxygen content {delta} was varied between the under- and the overdoped regime by subsequently annealing the same single crystal in Ar and in O{sub 2}, respectively. The symmetry analysis of the polarized electronic Raman scattering is consistent with a d{sub x{sup 2}-y{sup 2}}-wave symmetry of the energy gap in both regimes. The gap ratio 2{Delta}{sub max}/k{sub B}{Tc} and its temperature dependence changes with doping similar to predictions of theories based on paramagnon coupling.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 107575
- Report Number(s):
- CONF-9409365--
- Journal Information:
- Journal of Low Temperature Physics, Journal Name: Journal of Low Temperature Physics Journal Issue: 3-4 Vol. 99; ISSN JLTPAC; ISSN 0022-2291
- Country of Publication:
- United States
- Language:
- English
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