Evidence for electron-phonon interaction in Bi2Sr2CaCu2O8+x from tunneling measurementsстатья
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Дата последнего поиска статьи во внешних источниках: 19 октября 2015 г.
Аннотация:Tunneling effects in Bi2Sr2CaCu2O8+x single crystals with Tc=80÷90K have been investigated using a break junction technique. A reproducible fine structure has been observed in the tunneling spectrum at voltages V > Vg=2Δ/e, which shifts with the gap feature to lower voltages with increasing temperature. This structure correlates with the phonon density of states, as determined by inelastic neutron scattering, and indicates the importance of electron-phonon interaction for the superconductivity in BiSrCaCuO.