Polaronic signatures in the optical properties of the electron-doped cuprate superconductor Nd2−xCexCuO4

E. Cappelluti; S. Ciuchi; S. Fratini

doi:10.1103/PhysRevB.79.012502

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Polaronic signatures in the optical properties of the electron-doped cuprate superconductor Nd2−xCexCuO4

E. Cappelluti, S. Ciuchi, S. Fratini

DOI 10.1103/PhysRevB.79.012502 · Physical Review B

T1

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Abstract

We investigate the temperature and doping dependences of the midinfrared band in the optical conductivity of electron-doped cuprates in terms of magnetic/lattice polaron formation. We employ dynamical mean-field theory in the context of the Holstein-t−J model for the specific case of Nd2−xCexCuO4. We find that the onset of short-range magnetic correlations at the pseudogap temperature triggers the formation of the lattice polaron responsible for the midinfrared band.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Nd2-xCexCuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown