Artículo
Garbarino, G.; Acha, C.; Vega, D.; Leyva, G.; Polla, G.; Martin, C.; Maignan, A.; Raveau, B. "Revealing polarons with high pressure on low electron-doped manganites" (2004) Physical Review B - Condensed Matter and Materials Physics. 70(1):014414-1-014414-5
Consulte la política de Acceso Abierto del editor
Abstract:
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.
Registro:
| Documento: | Artículo |
| Título: | Revealing polarons with high pressure on low electron-doped manganites |
| Autor: | Garbarino, G.; Acha, C.; Vega, D.; Leyva, G.; Polla, G.; Martin, C.; Maignan, A.; Raveau, B. |
| Filiación: | Laboratorio de Bajas Temperaturas, Departamento de Física, Universidad de Buenos Aires, 1428 Buenos Aires, Argentina Departamento de Física, Comision Natl. de Energia Atomica, Gral Paz 1499, 1650 San Martín, Buenos Aires, Argentina Laboratoire CRISMAT, UMR 6508, ISMRA, 14050 Caen Cedex, France |
| Palabras clave: | 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 |
| Año: | 2004 |
| Volumen: | 70 |
| Número: | 1 |
| Página de inicio: | 014414 |
| Página de fin: | 1-014414-5 |
| DOI: | http://dx.doi.org/10.1103/PhysRevB.70.014414 |
| Título revista: | Physical Review B - Condensed Matter and Materials Physics |
| Título revista abreviado: | Phys. Rev. B Condens. Matter Mater. Phys. |
| ISSN: | 01631829 |
| CODEN: | PRBMD |
| CAS: | calcium ion, 14127-61-8; oxide, 16833-27-5; samarium, 7440-19-9; yttrium, 7440-65-5 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01631829_v70_n1_p014414_Garbarino |
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Citas:
---------- APA ----------
Garbarino, G., Acha, C., Vega, D., Leyva, G., Polla, G., Martin, C., Maignan, A.,..., Raveau, B. (2004) . Revealing polarons with high pressure on low electron-doped manganites. Physical Review B - Condensed Matter and Materials Physics, 70(1), 014414-1-014414-5.http://dx.doi.org/10.1103/PhysRevB.70.014414
---------- CHICAGO ----------
Garbarino, G., Acha, C., Vega, D., Leyva, G., Polla, G., Martin, C., et al. "Revealing polarons with high pressure on low electron-doped manganites" . Physical Review B - Condensed Matter and Materials Physics 70, no. 1 (2004) : 014414-1-014414-5.http://dx.doi.org/10.1103/PhysRevB.70.014414
---------- MLA ----------
Garbarino, G., Acha, C., Vega, D., Leyva, G., Polla, G., Martin, C., et al. "Revealing polarons with high pressure on low electron-doped manganites" . Physical Review B - Condensed Matter and Materials Physics, vol. 70, no. 1, 2004, pp. 014414-1-014414-5.http://dx.doi.org/10.1103/PhysRevB.70.014414
---------- VANCOUVER ----------
Garbarino, G., Acha, C., Vega, D., Leyva, G., Polla, G., Martin, C., et al. Revealing polarons with high pressure on low electron-doped manganites. Phys. Rev. B Condens. Matter Mater. Phys. 2004;70(1):014414-1-014414-5.http://dx.doi.org/10.1103/PhysRevB.70.014414
