Abstract
We report the low-temperature specific heat of La2−xSrxCuO4(x = 0.063) single crystals before and after annealingin the temperature region of 2–10 K and magnetic fields up to 12 T.The data confirm the (H)1/2 dependence of the linear termcoefficient γ predicted for d-wave paring in the Voloviktheory at T = 0 K. However, the data do not satisfy the proposedSimon–Lee scaling law at finite temperatures, i.e. CDOS/(T2) = f(T/(H)1/2), where f is an unknown scalingfunction and CDOS is the extra specific heat contributed bythe nodal quasiparticles due to the Doppler effect. Possiblereasons for this failure are presented.
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