Spin-phonon coupling and q-dependence of spin excitations and high-Tc superconductivity from band models

@article{Jarlborg2009SpinphononCA,
  title={Spin-phonon coupling and q-dependence of spin excitations and high-Tc superconductivity from band models},
  author={Thomas N. Jarlborg},
  journal={Physical Review B},
  year={2009},
  volume={79},
  pages={094530}
}
  • T. Jarlborg
  • Published 15 April 2008
  • Physics
  • Physical Review B
Spin-phonon coupling (SPC) has been shown to be compatible with many unusual properties of the high-Tc copper oxides. Parameters from ab initio band calculations for unit cells of La2CuO4 are used in a free-electron-like model in order to study the variation in coupling between spin waves and different phonons. Different SPC for different phonons can explain the “hour-glass” shape of the spin excitations. The model predicts larger q vectors at less doping and rather complex isotope shifts. A… 
9 Citations

Figures and Tables from this paper

Electronic Structure, Doping, Order and Disorder in Cuprate Superconductors
The electron-phonon and spin-phonon coupling in typical high- TC cuprates are peaked for just a few q-vectors because of the two-dimensional Fermi surface shape. Few spin-phonon excitations
Raman studies of spin-phonon coupling in hexagonal BaFe12O19
Phonon softening in hexagonal BaFe12O19 single crystal is observed in temperature dependent polarized Raman spectroscopy. The phonon softening is significantly enhanced below ∼80 K, at which the
Electronic Structure and Properties of Superconducting Materials with Simple Fermi Surfaces
The electronic structures of the ground state for several different superconducting materials, such as cuprates, conventional 3-dimensional superconductors, doped semiconductors, and low-dimensional
A model of the T-dependent pseudogap and its competition with superconductivity in copper oxides
Results for pseudogaps are obtained from a band model, where the stability of the gap depends on the amplitudes of vibrational displacements, or magnetic moments, and their coupling to electrons. A
Theoretical aspects of simple and nested Fermi surfaces for superconductivity in doped semiconductors and high-TC cuprates
Abstract The density-of-states at the Fermi energy, N ( E F ) , is low in doped superconducting semiconductors and high-TC cuprates. This contrasts with the common view that superconductivity
Effect of optical phonon–magnon interaction on the magnon damping at finite temperature
Abstract A magnon–phonon interaction model is set up in a two-dimensional ferromagnetic compound square-lattice system. By using Matsubara Green function theory we have calculated the magnon damping
Supercell Band Calculations and Correlation for High- Copper Oxide Superconductors
First principle band calculations based on local versions of density functional theory (DFT), together with results from nearly free-electron models, can describe many typical but unusual properties
Effect of optical phonon‐magnon interaction on the magnon softening at finite temperature
A magnon-phonon interaction model is set up in a two-dimensional ferromagnetic compound square-lattice system. Using the Matsubara Green function theory we calculated the magnon dispersion curves on
Polaron signatures in the phonon dispersion of high-temperature superconducting copper oxides
High-temperature superconducting copper oxides display a variety of both long-range and local lattice anomalies which are related to the onset of the pseudogap phase and / or the onset of

References

SHOWING 1-10 OF 20 REFERENCES
Physical properties of high temperature superconductors
While a great effort has been made to discover new high temperature superconductors, a large-scale, parallel effort has been made to determine the fundamental properties of these fascinating new
"J."
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)
Physica C454
  • 5,
  • 2007
Phys
  • Rev. B46, 14321,
  • 1992
Nature Physics 3
  • 163,
  • 2007
S
  • Wakimoto, J.A. Fernandez- Baca, J.M. Tranquada and K. Yamada, cond-matt arXiv:0801:2254v1
  • 2008
Phys
  • Rev. B71, 060501(R),
  • 2005
Phys
  • Rev. Lett. 95, 157601
  • 2005
Nature 429
  • 534
  • 2004
Nature 429
  • 531
  • 2004
...
1
2
...