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arXiv · 0711.1488

Theoretical study on isotopic shift in angle-resolved photoemission spectra of Bi2Sr2CaCu2O8

Kai Ji·Keiichiro Nasu
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Abstract

We develop a path-integral theory to study the angle-resolved photoemission spectra (ARPES) of high-T_c superconductors based on a two-dimensional model for the CuO2 conduction plane, including both electron-electron (e-e) and electron-phonon (e-ph) interactions. Comparing our result with the experimental one of Bi2Sr2CaCu2O8, we find that the experimentally observed isotopic band shift in ARPES is due to the off-diagonal quadratic e-ph coupling, whereas the presence of e-e repulsion partially suppresses this effect.

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Kai Ji, Keiichiro Nasu. 2007-11-09. Theoretical study on isotopic shift in angle-resolved photoemission spectra of Bi2Sr2CaCu2O8. https://doi.org/10.1088/1742-6596/100/5/052100

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