Polaron formation and local magnetic moments in cuprate superconductors
J. Lorenzana, A. Dobry
DOI 10.1103/PhysRevB.50.16094 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Exact diagonalization calculations show a continuous transition from delocalized to polaron behavior as a function of intersite electron-lattice coupling. A transition, found previously at the Hartree-Fock level between a magnetic and a nonmagnetic state, does not subsist when fluctuations are included. Local phonon modes become softer close to the polaron and by comparison with optical measurements of doped cuprates we conclude that they are close to the transition region between polaronic and nonpolaronic behavior. The barrier to adiabatically move a hole vanishes in that region suggesting large mobilities.
Similar papers
Polaronic signatures in the optical properties of the electron-doped cuprate superconductor Nd2−xCexCuO4
similarity 0.91E. Cappelluti et al.
Source status unknown — claims are unverified
Magnetic polarons in weakly doped high-Tc superconductors
similarity 0.90E. M. Hankiewicz et al.
Source status unknown — claims are unverified
Bipolaronic proximity and other unconventional effects in cuprate superconductors
similarity 0.90A. S. Alexandrov · 2008 · arXiv:0801.3779
Source status unknown — claims are unverified
Polaronic Behavior of Undoped High-Tc Cuprate Superconductors from Angle-Resolved Photoemission Spectra
similarity 0.90O. Rösch et al.
Source status unknown — claims are unverified
Boson-fermion duality and metastability in cuprate superconductors
similarity 0.89J. Ranninger & T. Domański
Source status unknown — claims are unverified
Lattice dynamics effects on small polaron properties
similarity 0.89marco zoli · 2000 · arXiv:cond-mat/0004304
Source status unknown — claims are unverified