Anomalous Electronic Susceptibility in Bi2sr2cuo6+d

TL;DR

This study investigates the magnetic susceptibility of overdoped Bi2Sr2CuO6+d, revealing unusual linear temperature dependence and correlations linked to doping levels, indicating non-conventional metallic behavior.

Contribution

It provides new insights into the anomalous magnetic properties of overdoped cuprates, highlighting a linear temperature dependence and a correlation between susceptibility parameters.

Findings

Susceptibility decreases with temperature in overdoped Bi2Sr2CuO6+d.

Susceptibility exhibits a linear temperature dependence at high temperatures.

A linear correlation exists between susceptibility parameters and doping levels.

Abstract

We report magnetic susceptibility performed on overdoped Bi2Sr2CuO6+d powders as a function of oxygen doping d and temperature T. The decrease of the spin susceptibility chis with increasing T is confirmed. At sufficient high temperature, chis presents an unusual linear temperature dependence chis=chis0 -chi1T . Moreover, a linear correlation between chi1 and chis0 for increasing hole concentration has been displayed. These non conventional metal features will be discussed in terms of a singular narrow-band structures.