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Abstract:
The thermopower and the thermal conductivity of single crystals of the
low-carrier Kondo system CeNiSn were investigated at low temperatures
(0.1 K < T < 8 K) and in magnetic fields up to 8 T. Whereas the results
for T > 2 K corroborate the formation of a field-dependent anisotropic
gap, for T < 1 K we observe metallic-like behavior.