| Autor: |
Reber, T. J., Parham, S., Plumb, N. C., Cao, Y., Li, H., Sun, Z., Wang, Q., Iwasawa, H., Wen, J. S., Xu, Z. J., Gu, G., Ono, S., Berger, H., Yoshida, Y., Eisaki, H., Aiura, Y., Arnold, G. B., Dessau, D. S. |
| Rok vydání: |
2015 |
| Předmět: |
|
| Druh dokumentu: |
Working Paper |
| Popis: |
Using a new variant of photoelectron spectroscopy, we measure the homogeneous near-nodal pairing ($\Delta$) and pair-breaking self-energy ($\Gamma_S$) processes for a wide range of doping levels of Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$. For all samples we find that the pairing extends above the superconducting transition T$_c$ to a scale T$_{Pair}$ that is distinct from the antinodal pseudogap scale T$^*$ and near but slightly above T$_c$. We find that $\Delta$ and T$_{Pair}$ are related with a strong coupling ratio 2$\Delta$ /k$_B$T$_{Pair}\approx6$ across the entire doping phase diagram, i.e. independent of the effects of antinodal pseudogaps or charge-density waves. |
| Databáze: |
arXiv |
| Externí odkaz: |
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