https://doi.org/10.1007/s100510051094
Dependence of Tc on hydrostatic pressure in a 123 superconductor
1
Department of Physics, Washington University C. B. 1105, One Brookings Dr., St. Louis, MO 63130, USA
2
Department of Physics and Crown Center for Superconductivity Technion, Haifa 32000, Israel
Received:
26
August
1999
Published online: 15 May 2000
Hydrostatic pressure studies on the tetragonal 123 superconductor (La
Cax)
(Ba
La
)Cu3Oy for
x=0.1 and variable oxygen content y show that Tc increases rapidly
under pressure (+5 K/GPa) for underdoped, optimally doped and overdoped
samples. This points to a common cause for the pressure-induced changes in
the superconductivity at all levels of doping, with negligible effects from
charge transfer. Weak relaxation behavior in Tc is observed only for
the most underdoped sample.
PACS: 74.62.-c – Transition temperature variations / 74.62.Fj – Pressure effects / 74.72.Jt – Other cuprates
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000
