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

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

2007-11-09

arxiv.org/abs/0711.1488v1

J. Phys.: Conf. Ser. 108, 012017 (2008)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures, Procs. of IVC-17/ICSS-13/ICN+T2007, submitted to J. Phys.: Conf. Ser

Scientific paper

10.1088/1742-6596/100/5/052100

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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