1999/10/14 by S. Lupi, P. Maselli, M. Capizzi +4 · 1 citation
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Doping #Materials science #Phase (matter) #Phase diagram #Physics #Physics of Superconductivity and Magnetism #Polaron #Quantum mechanics #Superconductivity #Superconductivity in MgB2 and Alloys #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.83.4852
Text in apstex + 3 figures epsf. Typos corrected. To appear on Phys. Rev. Lett. Sub-j class: Superconductivity
arxiv created 1999/10/14 · openalex publication_date 1999/12/06 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The evolution with doping and temperature of the polaronic absorption in a family of high- Tc superconductors is followed across the whole phase diagram. The polaron band softens with increasing doping, is still present in the superconducting phase, and vanishes in the overdoped metallic phase. These results point toward the existence of polaron aggregates at low temperature and provide an experimental ground for the increasing number of theoretical descriptions of many-polaron systems.