LOGARITHMIC DIVERGENCE OF THE ELECTRICAL-RESISTIVITY IN THE METAL HYDRIDE YH3-DELTA

As reported earlier, the metal hydride YHx reveals spectacular switcha ble optical properties. In this Letter we report on another remarkable property of the hydrogen deficient YH3-delta trihydride phase. A loga rithmic temperature dependence of the electrical resistivity is observ ed within a large temperature range (20 less than or equal to T less t han or equal to 200 K) for hydrogen deficiencies 0.01 < delta < 0.15. This dependence may be related to two dimensional weak localization or Kondo scattering of the conduction electrons. [S0031-9007(97)04448-7] .