Pressure-temperature phase diagram of charge ordering in Nd1/2Sr1/2MnO3

Autor:	Maselli, P., Nicoletti, D., Nucara, A., Vitucci, F. M., Irizawa, A., Shoji, K., Nanba, T., Calvani, P.
Rok vydání:	2010
Předmět:	Condensed Matter - Strongly Correlated Electrons Condensed Matter - Materials Science
Zdroj:	EPL 92, 47001 (2010)
Druh dokumentu:	Working Paper
DOI:	10.1209/0295-5075/92/47001
Popis:	We observe how the charge-ordering (CO) temperature of Nd1/2Sr1/2MnO3 decreases with the external pressure p from 160 K at p = 0 down to 30 K at p ~ 4.5 GPa, by measuring the values p, T where the far-infrared spectral weight of the metallic phase is fully recovered. We thus determine the (p, T) phase diagram of CO in that manganite. We also find that the parameter d(lnTCO)/dp which describes this metallization from the CO phase is equal and opposite to the quantity d(lnTc)/dp which governs the metallization of the paramagnetic state at comparable Curie temperatures Tc, in similar manganites at half doping. Comment: 5 pages, 5 figures, EPL (2010) in press
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1011.0665 Zobrazit plný text záznamu View this record from Arxiv