Carrier generation/recombination processes and polaron effect in perovskite manganite thin films

Autor:	Masasi Inoue, Minoru Sasaki, Guang-Cheng Xiong, Guang-Ri Wu, Hiroshi Negishi
Rok vydání:	2000
Předmět:	Ionic radius Materials science Condensed matter physics Thermoelectric effect Curie temperature Electrical and Electronic Engineering Condensed Matter Physics Polaron Manganite Electronic Optical and Magnetic Materials Magnetic field Ion Perovskite (structure)
Zdroj:	Physica B: Condensed Matter. :1912-1913
ISSN:	0921-4526
DOI:	10.1016/s0921-4526(99)03011-2
Popis:	Pulsed-laser-induced transient thermoelectric effect (TTE) for perovskite manganite films, La0.6Ca0.4MnO3 (LCMO), Pr0.67Sr0.33MnO3 (PSMO), La0.7Sr0.3MnO3 (LSMO), has been measured under DC electric and magnetic fields. The photoinduced TTE voltage and its sign are strongly dependent on both temperature and magnetic field, which is due to the formation of a bipolar state of photogenerated electrons and holes. It is found that Jahn–Teller and polaron effects are appreciable near the Curie temperature for the carrier recombination, in particular, for LCMO with small ionic radius of Ca2+ ions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::24fb3be11a62f9d9031be0603cc98afb https://doi.org/10.1016/s0921-4526(99)03011-2 Zobrazit plný text záznamu Full Text from ScienceDirect