Issue |
EPL
Volume 92, Number 4, November 2010
|
|
---|---|---|
Article Number | 47001 | |
Number of page(s) | 5 | |
Section | Condensed Matter: Electronic Structure, Electrical, Magnetic and Optical Properties | |
DOI | https://doi.org/10.1209/0295-5075/92/47001 | |
Published online | 18 November 2010 |
Pressure-temperature phase diagram of charge ordering in Nd1/2Sr1/2MnO3
1
CNR-SPIN and Dipartimento di Fisica, Università di Roma La Sapienza - Roma, Italy, EU
2
Graduate School of Science and Technology, Kobe University - Hyogo, Japan
Received:
27
October
2010
Accepted:
2
November
2010
We observe how the charge-ordering (CO) temperature TCO 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.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 62.50.-p – High-pressure effects in solids and liquids / 78.30.-j – Infrared and Raman spectra
© EPLA, 2010
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.