TEMPERATURE-LINEAR TERM OF HEAT CAPACITY OF La-Ba-Cu-O AND La-Sr-Cu-O SYSTEMSReport as inadecuate




TEMPERATURE-LINEAR TERM OF HEAT CAPACITY OF La-Ba-Cu-O AND La-Sr-Cu-O SYSTEMS - Download this document for free, or read online. Document in PDF available to download.



Abstract : Heat capacity of La2-xMxCuO4 M = Ba, Sr has been investigated between 1.5 and 10 K. The temperature e-linear term, γT, of heat capacity is absent in the antiferromagnetic ordered region of x < 0.02. γ increases abruptly from x = 0.02 to x = 0.05 where the system is insulating at low temperature and reaches of the order of 4mJ-mol.K2. The appearance of the finite γ between the AF and SC state causes clearly to spin degrees of freedom. In the superconducting region, γ changes strongly with x and seems to be vanishingly small at x = 0.10 for Ba-doping and 0





Author: K. Kumagai Y. Nakamura I. Watanabe Y. Nakamichi H. Nakajima

Source: https://hal.archives-ouvertes.fr/



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