Physics – Condensed Matter – Superconductivity
Scientific paper
2006-06-14
Phys. Rev. B {\bf75} 172504 (2007)
Physics
Condensed Matter
Superconductivity
4 pages, 3 figures Published version with significant changes
Scientific paper
10.1103/PhysRevB.75.172504
We introduce a formalism for calculating dynamic response functions using experimental single particle Green's functions derived from angle resolved photoemission spectroscopy (ARPES). As an illustration of this procedure we estimate the dynamic spin response of the cuprate superconductor Bi$_2$Sr$_2$CaCu$_2$O$_{8+\delta}$. We find good agreement with superconducting state neutron data, in particular the $(\pi,\pi)$ resonance with its unusual `reversed magnon' dispersion. We anticipate our formalism will also be of useful in interpreting results from other spectroscopies, such as optical and Raman responses.
Campuzano Juan-Carlos
Chatterjee Utpal
Fretwell Helen M.
Kadowaki Kazuo
Kaminski Adam
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