Temperature dependent study of itinerant holes in Bi2Sr2Ca1Cu2O8+d,

A polarised X-ray absorption study is made on a BSCCO single crystal to study the anomalous temperature dependence of itinerant holes, charge aggregation and pair formation. The total yield measurements were made at the CuL3 edges varying the temperature from the 80 K to room temperature (∼300 K) using a liquid nitrogen cryostat. We observe the processes of charge aggregation, pair formation and pair breaking repeating themselves at various temperatures, in the normal state