Revealing polarons with high pressure on low electron-doped manganites
Pressure sensitivity (up to 1 GPa) of the electrical resistivity and of the ac susceptibility was measured for low electron-doping levels of Ca 1-xYxMnO3 (CYMO) and of Ca1-xSm xMnO3 (CSMO) ceramic samples (0.05≤x≤0.15). A very weak pressure dependence of the Curie temperature (Tc) was observed for b...
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2004
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n1_p014414_Garbarino http://hdl.handle.net/20.500.12110/paper_01631829_v70_n1_p014414_Garbarino |
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paper:paper_01631829_v70_n1_p014414_Garbarino2023-06-08T15:14:03Z Revealing polarons with high pressure on low electron-doped manganites calcium ion manganese derivative manganite oxide samarium unclassified drug yttrium article atomic particle ceramics chemical modification electric resistance electron doping electron transport hyperbarism intermethod comparison metal binding molecular interaction phonon polaron pressure measurement sampling sensitivity analysis Pressure sensitivity (up to 1 GPa) of the electrical resistivity and of the ac susceptibility was measured for low electron-doping levels of Ca 1-xYxMnO3 (CYMO) and of Ca1-xSm xMnO3 (CSMO) ceramic samples (0.05≤x≤0.15). A very weak pressure dependence of the Curie temperature (Tc) was observed for both systems (∼6 K GPa-1), when compared to the hole-doped manganites of the same Tc (∼20 K GPa-1). Our results can be interpreted within a modified double exchange scenario, where pressure alters the reduction of the bandwidth produced by the electron-phonon interaction associated with small Fröhlich polarons in the weak to intermediate coupling regime. 2004 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n1_p014414_Garbarino http://hdl.handle.net/20.500.12110/paper_01631829_v70_n1_p014414_Garbarino |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
calcium ion manganese derivative manganite oxide samarium unclassified drug yttrium article atomic particle ceramics chemical modification electric resistance electron doping electron transport hyperbarism intermethod comparison metal binding molecular interaction phonon polaron pressure measurement sampling sensitivity analysis |
| spellingShingle |
calcium ion manganese derivative manganite oxide samarium unclassified drug yttrium article atomic particle ceramics chemical modification electric resistance electron doping electron transport hyperbarism intermethod comparison metal binding molecular interaction phonon polaron pressure measurement sampling sensitivity analysis Revealing polarons with high pressure on low electron-doped manganites |
| topic_facet |
calcium ion manganese derivative manganite oxide samarium unclassified drug yttrium article atomic particle ceramics chemical modification electric resistance electron doping electron transport hyperbarism intermethod comparison metal binding molecular interaction phonon polaron pressure measurement sampling sensitivity analysis |
| description |
Pressure sensitivity (up to 1 GPa) of the electrical resistivity and of the ac susceptibility was measured for low electron-doping levels of Ca 1-xYxMnO3 (CYMO) and of Ca1-xSm xMnO3 (CSMO) ceramic samples (0.05≤x≤0.15). A very weak pressure dependence of the Curie temperature (Tc) was observed for both systems (∼6 K GPa-1), when compared to the hole-doped manganites of the same Tc (∼20 K GPa-1). Our results can be interpreted within a modified double exchange scenario, where pressure alters the reduction of the bandwidth produced by the electron-phonon interaction associated with small Fröhlich polarons in the weak to intermediate coupling regime. |
| title |
Revealing polarons with high pressure on low electron-doped manganites |
| title_short |
Revealing polarons with high pressure on low electron-doped manganites |
| title_full |
Revealing polarons with high pressure on low electron-doped manganites |
| title_fullStr |
Revealing polarons with high pressure on low electron-doped manganites |
| title_full_unstemmed |
Revealing polarons with high pressure on low electron-doped manganites |
| title_sort |
revealing polarons with high pressure on low electron-doped manganites |
| publishDate |
2004 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n1_p014414_Garbarino http://hdl.handle.net/20.500.12110/paper_01631829_v70_n1_p014414_Garbarino |
| _version_ |
1768544080745201664 |