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We report the low-temperature specific heat of La2-xSrxCuO4(x=0.063) single crystals before and after annealing in the temperature region of 2-10K and magnetic fields up to 12T.The data confirm the √H dependence of the linear term coefficient γ predicted for d-wave paring in the Volovik theory at T=0 K.However,the data do not satisfy the proposed Simon-Lee scaling law at finite temperatures,i.e.CDOS/(T^2)=fT√H),where f is an unknown scaling function and CDOS is the extra specific heat contributed by the nodal quasiparticles due to the Doppler effect.Possible reasons for this failure are presented. 相似文献
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An alternative method is applied to the study of nocleon-nucleon scattering phase shifts within the framework of the extended quark delocalization colour-screening model,in which the one-pion exchange with short-range cutoff is included. 相似文献
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