Direct Observation of High-Temperature Polaronic Behavior In Colossal Magnetoresistive Manganites
arXiv:cond-mat/0401275 · doi:10.1103/PhysRevLett.92.166401
Abstract
The temperature dependence of the electronic and atomic structure of the colossal magnetoresistive oxides (x = 0.3, 0.4) has been studied using core and valence level photoemission, x-ray absorption and emission, and extended x-ray absorption fine structure spectroscopy. A dramatic and reversible change of the electronic structure is observed on crossing the Curie temperature, including charge localization and spin moment increase of Mn, together with Jahn-Teller distortions, both signatures of polaron formation. Our data are also consistent with a phase-separation scenario.
5 pages, 4 figures, revtex
Cited by in corpus (9)
- Inelastic Light Scattering From Correlated Electrons
- Local Structure of La1-xSrxCoO3 determined from EXAFS and neutron PDF studies
- Transport properties in manganite thin films
- Cold chemistry: a few-body perspective on impurity physics of a single ion in an ultracold bath
- Numerical study of the isotope effect in underdoped high-temperature superconductors: Calculation of the angle-resolved photoemission spectra
- Relationship between macroscopic physical properties and local distortions of low doping La{1-x}Ca{x}MnO3: an EXAFS study
- Chemical potential shift induced by double-exchange and polaronic effects in Nd_{1-x}Sr_xMnO_3
- Direct Observation of Spectroscopic Inhomogeneities on La0.7Sr0.3MnO3 Thin Films by Scanning Tunnelling Spectroscopy
- Coherence of polaronic transport in layered metals