Pressure effects on the transition temperature and the magnetic field penetration depth in the pyrochlore superconductor RbOs2O6.

We report magnetization measurements under high hydrostatic pressure in the newly discovered pyrochlore superconductor RbOs2O6 (Tc ≃ 6.3 K at p = 0). A pronounced and positive pressure effect (PE) on Tc with dTc/dp = 0.090(1) K/kbar was observed, whereas no PE on the magnetic �