Magnetic penetration depth in RbOs2O6 studied by muon spin rotation

was found to be inthe range of 3.09–3.60, which is close to the weak-couplingBCS value of 3.52.The paper is organized as follows: In Sec. II we describethe sample preparation procedure and the TF- SR techniqueas a tool to measure the magnetic field penetration depth .Section III A comprises studies of the temperature depen-dence of . In Secs. III B and III C we discuss the calculationof the absolute value of and its magnetic field dependence.In Sec. III D results of the dependence of the zero-temperature superconducting gap