Quasiparticles and the structure of orbital polarons in ferromagnetic LaMnO3

Bała, J.; Oleś, A. M.; Horsch, P.

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Quasiparticles and the structure of orbital polarons in ferromagnetic LaMnO₃

MPS-Authors

/persons/resource/persons279756

Bała, J.
Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280356

Oleś, A. M.
Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society;

/persons/resource/persons280071

Horsch, P.
Department Quantum Many-Body Theory (Walter Metzner), Max Planck Institute for Solid State Research, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Bała, J., Oleś, A. M., & Horsch, P. (2002). Quasiparticles and the structure of orbital polarons in ferromagnetic LaMnO₃. Physical Review B, 65(13): 134420.

Cite as: https://hdl.handle.net/21.11116/0000-000E-ED3B-6

Abstract

We investigate the spectral functions and orbital-correlation
functions relative to the position of an e(g) hole moving in
the ferromagnetic plane of orbitally ordered LaMnO3. Solving
this problem in a self-consistent Born approximation, we
analyze a hole motion as a function of uniaxial pressure, the
Jahn-Teller interaction, and the polarization of orbitals in
the vicinity of the hole. We report a large redistribution of
the spectral weight as compared with the free hole dispersion
(proportional tot), strongly dependent on the type of the
alternating orbital order. Polarization of orbitals around the
hole (proportional toDelta) can lead to a very narrow
quasiparticle band and to large incoherent spectral weight,
indicating a confinement of holes in a lightly doped LaMnO3
insulator. It thus strongly modifies the shape of the orbital
polaron, and favors the localization of small orbital polarons
in the regime of Delta>t.