Anisotropy of the non-equilibrium quasiparticle dynamics in single crystals of YBa2Cu3O7-delta
- We report for the first time, measurements of ultrafast transients from YBCO in which the contributions from a- and b-axis response are separately identified using polarised light. A new signal is observed for E parallel to a which has been obscured in all previous thin film experiments. Comparing the two contributions we find the new signal to be sensitive to T-c whilst the signal for E parallel to b exhibits pseudogap behaviour.
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