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Observation Of An Isotope Shift In The Superconducting Transition Temperature Of La1.85Sr0.15Cuo4, Tanya Faltens, William Ham, Steven Keller, Kevin Leary, James Michaels, Angelica Stacy, Hans Conrad Zur Loye, Donald Morris, T Barbee, Marvin Cohen, Cohen Hoen, A Zettl
Observation Of An Isotope Shift In The Superconducting Transition Temperature Of La1.85Sr0.15Cuo4, Tanya Faltens, William Ham, Steven Keller, Kevin Leary, James Michaels, Angelica Stacy, Hans Conrad Zur Loye, Donald Morris, T Barbee, Marvin Cohen, Cohen Hoen, A Zettl
Hans Conrad zur Loye
An oxygen isotope shift is observed in superconducting La1.85Sr0.15CuO4 when 18O is substituted partially for 16O; the superconducting transition temperature Tc is lowered by 0.3 to 1.0 K in different samples. We examine these results using conventioanl phonon-mediated BCS theory and conclude that, for La1.85Sr0.15CuO4, phonons play an important role in the pairing mechanism.