Dynamic spin-response function of the high-temperature Bi2Sr2CaCu2O8+δ superconductor from angle-resolved photoemission spectra

U. Chatterjee; D. K. Morr; M. R. Norman; M. Randeria; A. Kanigel; M. Shi; E. Rossi; A. Kaminski; H. M. Fretwell; S. Rosenkranz; K. Kadowaki; J. C. Campuzano

doi:10.1103/PhysRevB.75.172504

Dynamic spin-response function of the high-temperature Bi2Sr2CaCu2O8+δ superconductor from angle-resolved photoemission spectra

U. Chatterjee, D. K. Morr, M. R. Norman, M. Randeria, A. Kanigel, M. Shi, E. Rossi, A. Kaminski, H. M. Fretwell, S. Rosenkranz, K. Kadowaki, J. C. Campuzano

DOI 10.1103/PhysRevB.75.172504 · Physical Review B

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Abstract

We introduce a formalism for calculating dynamic response functions using experimental single-particle Green’s functions. As an illustration of this procedure, we estimate the dynamic spin-response of the cuprate superconductor Bi2Sr2CaCu2O8+δ. We find good agreement with superconducting state neutron data, in particular, the (π,π) resonance with its unusual “hourglass” shaped dispersion. We anticipate that our formalism will also be useful in interpreting results from other spectroscopies, such as optical and Raman responses.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Bi2Sr2CaCu2O8+δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	90	Pressure not reported	unknown
YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown