Transport, Thermal, And Nmr Characteristics Of Ceru2al10

We report the experimental results of CeRu2Al10 by means of transport, thermal, as well as Al-27 nuclear magnetic resonance (NMR) measurements. This material has been of current interest due to indications of heavy-fermion behavior accompanied by the presence of an anomalous phase transition at T-o similar to 27 K. The phase transition has been characterized by marked features near T-o in all measured physical quantities. The NMR observations clearly indicated the nonmagnetic ground state in CeRu2Al10. Furthermore, the opening of an energy gap of about 100 K over the Fermi surfaces was obtained from the analysis of low-temperature specific-heat and Knight-shift data. Above T-o, the transport and thermoelectric properties can be well described by a two-band model with reliable physical parameters. Remarkably, the extracted value of quasielastic line-width q(f)similar to 55 K is found to agree well with that observed in the recent neutron-scattering measurement.