1 / 18

String excitations in quantum antiferromagnets and photoelectron spectroscopy

String excitations in quantum antiferromagnets and photoelectron spectroscopy. E. Manousakis Physics Department, Florida State University and Physics Department, University of Athens, Greece. Graf et al., Phys. Rev. Lett 98, 067004 (2007). Extensions: t-t’-t”-J model.

pahana
Télécharger la présentation

String excitations in quantum antiferromagnets and photoelectron spectroscopy

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. String excitations in quantum antiferromagnets and photoelectron spectroscopy E. Manousakis Physics Department, Florida State University and Physics Department, University of Athens, Greece

  2. Graf et al., Phys. Rev. Lett 98, 067004 (2007)

  3. Extensions: t-t’-t”-J model What are the “string” excitations The hole in an antiferromagnetically correlated background feels a linear potential as it moves away from its birth site.

  4. Spectral function t-J model, J/t=0.3 t=0.4eV k: (0,0) to (p/2,p/2)

  5. Spectral function t-t’-t”-J model, k: (0,0) to (p/2,p/2) Parameters the same as in Kim et al. PRL 80, 4245 (98).

  6. Spectral function t-J model, J/t=0.3 t=0.4eV k: (0,0) to (p,0)

  7. Spectral function t-t’-t”-J model, k: (0,0) to (p,0)

  8. Comparison with Ronning et al. PRB 71, 094518 (2005)

  9. Ronning et al. t-J model t-t’-t”-J model

  10. t-J model Graf et al., Phys. Rev. Lett 98, 067004 (2007)

  11. Connected string states up to 4 hops

  12. Conclusions

More Related