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Isotropic Kink and Quasiparticle Excitations in the Three-Dimensional Perovskite Manganite La$_{0.6}$Sr$_{0.4}$MnO$_3$
- Publication Year :
- 2015
- Publisher :
- arXiv, 2015.
-
Abstract
- In order to reveal many-body interactions in the three-dimensional (3D) perovskite manganite, we have performed an $in$ $situ$ angle-resolved photoemission spectroscopy (ARPES) on La$_{0.6}$Sr$_{0.4}$MnO$_3$ (LSMO) and investigated the behaviors of quasiparticles. We observe quasiparticle peaks around the Fermi momentum, both in the electron and the hole bands, and clear kinks throughout the hole Fermi surface in the ARPES band dispersion. The isotropic behavior sharply contrasts to the strong anisotropic quasiparticle excitation observed in layered manganites. These results suggest that polaronic quasiparticles by coupling of the electrons with Jahn-Teller phonons play an important role in the physical properties of the ferromagnetic metallic phase in 3D manganite LSMO.<br />Comment: 13 pages, 4 figures
- Subjects :
- Condensed Matter - Strongly Correlated Electrons
Condensed Matter::Materials Science
Strongly Correlated Electrons (cond-mat.str-el)
Condensed Matter::Superconductivity
FOS: Physical sciences
Condensed Matter::Strongly Correlated Electrons
Condensed Matter::Mesoscopic Systems and Quantum Hall Effect
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....f64b366edabe2ecf12c87a21128731bb
- Full Text :
- https://doi.org/10.48550/arxiv.1504.07808