Non linear excess conductivity of Bi$_2$Sr$_2$Ca$_{n-1}$Cu$_n$O$_{2n+4+x}$ (n = 1,2), thin films

L. Fruchter; I. Sfar; F. Bouquet; Z. Z. Li; H. Raffy

doi:10.1103/PhysRevB.69.144511

paper

Non linear excess conductivity of Bi $_{2}$ Sr $_{2}$ Ca $_{n - 1}$ Cu $_{n}$ O $_{2 n + 4 + x}$ (n = 1,2), thin films

arXiv:cond-mat/0310013 · doi:10.1103/PhysRevB.69.144511

Abstract

The suppression of excess conductivity with electric field is studied for Bi $_{2}$ Sr $_{2}$ Ca $_{n - 1}$ Cu $_{n}$ O $_{2 n + 4 + x}$ ( $n$ = 1, 2) thin films. A pulse-probe technique is used, which allows for an estimate of the sample temperature. The characteristic electric field for fluctuations suppression is found well below the expected value for all samples. For the $n = 1$ material, a scaling of the excess conductivity with electric field and temperature is obtained, similar to the scaling under strong magnetic field.

Non linear excess conductivity of Bi2​Sr2​Can−1​Cun​O2n+4+x​ (n = 1,2), thin films

Abstract

Non linear excess conductivity of Bi $_{2}$ Sr $_{2}$ Ca $_{n - 1}$ Cu $_{n}$ O $_{2 n + 4 + x}$ (n = 1,2), thin films