6533b85dfe1ef96bd12bf10a

RESEARCH PRODUCT

Relaxation of electronic excitations in strontium titanate

V.a. TrepakovLarisa GrigorjevaDonats MillersVladimir PankratovS. E. Kapphan

subject

Nuclear and High Energy PhysicsRadiationAbsorption spectroscopyChemistryDopingAnalytical chemistryCondensed Matter PhysicsPolaronMolecular physicschemistry.chemical_compoundAbsorption bandUltrafast laser spectroscopyStrontium titanateGeneral Materials ScienceLuminescenceAbsorption (electromagnetic radiation)

description

The transient absorption spectra and kinetics were studied for undoped, lead doped and high purity SrTiO 3 single crystals. The pulsed electron beam induced transient absorption is studied in all crystals. The strong absorption at 0.8 v eV was observed only in high purity SrTiO 3 . This absorption is suggested to arise from intrinsic electron polaron. The bound electron polarons are likely responsible for absorption band at 1.4 v eV. The main luminescence band under excitation pulse is observed at 2.75 v eV. The luminescence decay is faster than that of transient absorption.

yearjournalcountryeditionlanguage
2002-01-01Radiation Effects and Defects in Solids
https://doi.org/10.1080/10420150215837