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We report on a comprehensive study of the transport, specific heat, magneticsusceptibility and optical spectroscopy on single crystal of Fe$_{1.05}$Te. Weconfirm that Fe$_{1.05}$Te undergoes a first-order phase transition near 65 K.However, its physical properties are considerably different from other parentcompounds of FeAs-based systems, presumably attributed to the presence ofexcess Fe ions. The charge transport is rather incoherent above the transition,and no clear signature of the gap is observed below the transition temperature.Strong impurity scattering effect exists also in Se-doped superconductingsample Fe$_{1.03}$Se$_{0.30}$Te$_{0.70}$, leading to a relatively low T$_c$ buta rather high upper critical field.

Electronic properties of single-crystalline Fe$_{1.05}$Te and Fe$_{1.03}$Se$_{0.30}$Te$_{0.70}$