Temperature-scaling behavior of the Hall conductivity for Hg-based superconducting thin films

Details Temperature-scaling behavior of the Hall conductivity for Hg-based superconducting thin films Temperature-scaling behavior of the Hall conductivity for Hg-based superconducting thin films

1999-04-27

arxiv.org/abs/cond-mat/9904385v1

Physics

Condensed Matter

Superconductivity

5 pages, 4 eps figures

Scientific paper

10.1016/S0921-4534(99)00476-1

The Hall conductivities of HgBa_{2}CaCu_{2}O_{6+\delta}and HgBa_{2}Ca_{2}Cu_{3}O_{8+\delta} thin films are investigated for a magnetic field parallel to the c axis. The mixed-state Hall conductivity for these compounds is well described by \sigma_{xy}=C_{1}/H+C_{2}+C_{3}H. The prefactor C_1 shows a temperature dependence of the form C_1 = A(1-t)^n near T_c, where t=T/T_c is the reduced temperature. Contrary to the previous results, C_2 also follows a temperature-scaling behavior similar to that of the coefficient C_1. The observed value of n = 1.8 - 2.3 is comparable to the previously observed values for YBa_{2}Cu_{3}O_{7-\delta} and La_{2-x}Sr_{x}CuO_{4}.

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