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The results of magnetic susceptibility, electrical resistivity ($\rho$),heat-capacity (C) and thermopower (S) measurements on CeCuAs2, forming inZrCuSi2-type tetragonal structure, are reported. Our investigations reveal thatCe is trivalent and there is no clear evidence for long range magnetic orderingdown to 45 mK. The $\rho$ behavior is notable in the sense that (i) thetemperature (T)-coefficient of $\rho$ is negative in the entire range ofmeasurement (45 mK to 300 K) with large values of $\rho$, while S behavior istypical of metallic Kondo lattices, and (ii) $\rho$ is proportional to T-0.6 atlow temperatures, without any influence on the exponent by the application of amagnetic field, which does not seem to classify this compound intohither-to-known non-Fermi liquid (NFL) systems. In contrast to the logarithmicincrease known for NFL systems, C/T measured down to 0.5 K exhibits a fallbelow 2 K. The observed properties of this compound are unusual among Cesystems.Comment: PRB, in pres

physical review. b, condensed matter and materials physics

Magnetic, electrical resistivity, heat-capacity, and thermopower anomalies in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">CeCuAs</mml:mi></mml:mrow><mml:mn>2</mml:mn></mml:msub></mml:mrow></mml:math>

Magnetic, electrical resistivity, heat-capacity, and thermopower anomalies inCeCuAs2