Characterizing the insulator adjacent to the superconductor in Bi2Sr2-xLaxCuO6+δ (x = 0.3)
Laboratoire de Physique des Solides, CNRS,
Université Paris-Sud, 91405 Orsay Cedex, France
Corresponding author: a firstname.lastname@example.org
Published online: 17 September 2008
The time-averaged and low-frequency noise transport properties were investigated in the vicinity of the superconductor–insulator transition for a Bi2Sr2-xLaxCuO6+δ (x = 0.3) thin film. The results are consistent with a superconductor (metal) embedded in a strong insulator, the latter showing two-dimensional variable range hopping properties. The weak insulator behavior – if any – is attributed to the metallic inclusions only.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 72.70.+m – Noise processes and phenomena / 74.72.Hs – Bi-based cuprates
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008