期刊
PHYSICAL REVIEW B
卷 79, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.79.012502
关键词
cerium compounds; doping; high-temperature superconductors; infrared spectra; magnetic polarons; neodymium compounds; optical conductivity
资金
- MIUR [MIUR-PRIN 2005]
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.
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