Authors:
H Rho, CS Snow, SL Cooper, Z Fisk, A Comment, J-P Ansermet
Journal name: 
Phys Rev Lett
Citation info: 
88(12):127401
Abstract: 
Raman scattering studies as functions of temperature, magnetic field, and Gd substitution are used to investigate the evolution of magnetic polarons and spin-carrier interactions through the metal-insulator transition in Eu(1-x)Gd(x)O. These studies reveal a spin-fluctuation-dominated paramagnetic (PM) regime for T>T*>T(C), and a coexistence regime for T<T* in which spin polarons develop and coexist with remnants of the PM phase. They further show a strong connection between spin cluster formation and the dramatic field effects observed in these materials.
DOI: 
http://doi.org/10.1103/PhysRevLett.88.127401
E-pub date: 
28 Feb 2002
Users with this publication listed: 
Arnaud Comment