New interpretation of the doping and temperature dependence of photoemission line shape and its implication to the high-Tc superconductivity

Changyoung Kim

doi:10.1117/12.335879

22 December 1998 New interpretation of the doping and temperature dependence of photoemission line shape and its implication to the high-T_c superconductivity

Changyoung Kim

Author Affiliations +

Proceedings Volume 3481, Superconducting and Related Oxides: Physics and Nanoengineering III; (1998) https://doi.org/10.1117/12.335879
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1998, San Diego, CA, United States

Abstract

Recent findings in the experiments on high T_c superconductors by angle resolved photoemission are discussed. Detailed temperature and doping dependent lineshape studies on cuprates lead to a new interpretation of the photoemission data. The broad photoemission peaks which often extend to the Fermi level when they are a few hundred meV away from the Fermi level are not single states with very large broadening. Rather, the broad structure should be interpreted as a collection of states. It is found that the low energy part of this structure is involved in the pairing and, contrary to the conventional superconductors, the pairing occurs not only near the so called Fermi surface but also away from it.

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Changyoung Kim "New interpretation of the doping and temperature dependence of photoemission line shape and its implication to the high-T_c superconductivity", Proc. SPIE 3481, Superconducting and Related Oxides: Physics and Nanoengineering III, (22 December 1998); https://doi.org/10.1117/12.335879

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