Orbiton-mediated multi-phonon scattering in La$_{1-x}$Sr$_x$MnO$_3$

A. Revcolevschi; B. B\"uchner; G. G\"untherodt; K.-Y. Choi; L. Pinsard-Gaudart; P. Lemmens; P. Reutler; V. P. Gnezdilov; Yu. G. Pashkevich

arxiv: cond-mat/0503460 · v1 · pith:BOBMQCISnew · submitted 2005-03-18 · ❄️ cond-mat.str-el

Orbiton-mediated multi-phonon scattering in La_(1-x)Sr_xMnO₃

K.-Y. Choi , P. Lemmens , G. G\"untherodt , Yu. G. Pashkevich , V. P. Gnezdilov , P. Reutler , L. Pinsard-Gaudart , B. B\"uchner

show 1 more author

A. Revcolevschi

This is my paper

classification ❄️ cond-mat.str-el

keywords multi-phononscatteringfeaturesramananomaliescrystallinedistinctdoping-dependence

0 comments

read the original abstract

We report on Raman scattering measurements of single crystalline La$_{1-x}$Sr$_x$MnO$_3$ ($x$=0, 0.06, 0.09 and 0.125), focusing on the high frequency regime. We observe multi-phonon scattering processes up to fourth-order which show distinct features: (i) anomalies in peak energy and its relative intensity and (ii) a pronounced temperature-, polarization-, and doping-dependence. These features suggest a mixed orbiton-phonon nature of the observed multi-phonon Raman spectra.

This paper has not been read by Pith yet.

Orbiton-mediated multi-phonon scattering in La_(1-x)Sr_xMnO₃

discussion (0)