Role of Holes in Determining Resistivity and Hall Effect in Crystals of YB2Cu3O7-δ and Bi2Sr2CaCu2O8 δ

Abstract

Electrical transport properties of superconducting materials are a widely studied area in superconductivity. In this study, the role of holes in determination of resistivity, Hall coefficient and Hall angle has been explored using a two-band model due to co-existence of holes and electrons in high-Tc YB2Cu3O7−δ and Bi2Sr2CaCu2O8+δ. The results obtained from this study show that hole resistivity ( ρ p ) decreases with increase in the ratio n p u ρ ρ = while the Hall coefficient ( RH ) is non-linearly dependent on the hole resistivity ( ρ p ). An increase in the hole scattering rate ( p γ ) causes a drop in the Hall scattering angle (θ H ).