Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3

Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3 We present a quasianalytical solution of a spin-orbital model of KCuF3, using the variational method for Green's functions. By analyzing the spectra for different partial bosonic compositions as well as the full solution, we show that hole propagation needs both orbiton and magnon excitations to develop, but the orbitons dominate the picture. We further elucidate the role of the different bosons by analyzing the self-energies for simplified models, establishing that because of the nature of the spin-orbital ground state, magnons alone do not produce a full quasiparticle band, in contrast to orbitons. Finally, using the electron-hole transformation between the eg states of KCuF3 and LaMnO3 we suggest the qualitative scenario for photoemission experiments in LaMnO3. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3

Preview Only

Orbiton-magnon interplay in the spin-orbital polarons of KCuF3 and LaMnO3

Abstract

We present a quasianalytical solution of a spin-orbital model of KCuF3, using the variational method for Green's functions. By analyzing the spectra for different partial bosonic compositions as well as the full solution, we show that hole propagation needs both orbiton and magnon excitations to develop, but the orbitons dominate the picture. We further elucidate the role of the different bosons by analyzing the self-energies for simplified models, establishing that because of the nature of the spin-orbital ground state, magnons alone do not produce a full quasiparticle band, in contrast to orbitons. Finally, using the electron-hole transformation between the eg states of KCuF3 and LaMnO3 we suggest the qualitative scenario for photoemission experiments in LaMnO3.
Loading next page...
 
/lp/aps_physical/orbiton-magnon-interplay-in-the-spin-orbital-polarons-of-kcuf3-and-CN2G36N5tv
Publisher
The American Physical Society
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.95.235153
Publisher site
See Article on Publisher Site

Abstract

We present a quasianalytical solution of a spin-orbital model of KCuF3, using the variational method for Green's functions. By analyzing the spectra for different partial bosonic compositions as well as the full solution, we show that hole propagation needs both orbiton and magnon excitations to develop, but the orbitons dominate the picture. We further elucidate the role of the different bosons by analyzing the self-energies for simplified models, establishing that because of the nature of the spin-orbital ground state, magnons alone do not produce a full quasiparticle band, in contrast to orbitons. Finally, using the electron-hole transformation between the eg states of KCuF3 and LaMnO3 we suggest the qualitative scenario for photoemission experiments in LaMnO3.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jun 28, 2017

There are no references for this article.

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$49/month

Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial