dc.contributor.author |
Biswas, Amalan
|
|
dc.contributor.author |
Raychaudhuri, A K
|
|
dc.contributor.author |
Mahendiran, R
|
|
dc.contributor.author |
Guha, A
|
|
dc.contributor.author |
Mahesh, R
|
|
dc.contributor.author |
Rao, C N R
|
|
dc.date.accessioned |
2012-11-27T10:48:36Z |
|
dc.date.available |
2012-11-27T10:48:36Z |
|
dc.date.issued |
1997-06-16 |
|
dc.identifier |
0953-8984 |
en_US |
dc.identifier.citation |
Journal Of Physics D: Applied Physics 9(24), L355-L360 (1997) |
en_US |
dc.identifier.uri |
https://libjncir.jncasr.ac.in/xmlui/10572/1097 |
|
dc.description |
Letter. Restricted Access. |
en_US |
dc.description.abstract |
We have used tunnelling spectroscopy (TS) to probe the density of states (DOS)
of the rare earth manganate Nd0:5Sr0:5MnO3, which shows a transition to a charge ordered
(CO) antiferromagnetic insulating state from a ferromagnetic metallic state. We find that a
gap opens up in the DOS around the Fermi level, EF , as the solid is cooled below the charge
ordering temperature TCO. The charge ordering gap (1CO) was found to be strongly temperature
dependent for T∼TCO and for T/TCO < 0:6 it reaches a limiting value of nearly 0.27 eV.
Above TCO the temperature dependence of the DOS at EF was found to be similar to that of the
solids such as La0:8Ca0:2MnO3 which show colossal magnetoresistance but no charge ordering. |
en_US |
dc.description.uri |
http://dx.doi.org/10.1088/0953-8984/9/24/002 |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
IOP Publishing Ltd |
en_US |
dc.rights |
© 1997 IOP Publishing Ltd |
en_US |
dc.subject |
Insulator-Metal Transition |
en_US |
dc.subject |
Magnetoresistance |
en_US |
dc.title |
Direct measurement of the charge ordering gap in Nd0.5Sr0.5MnO3 using vacuum tunnelling |
en_US |
dc.type |
Article |
en_US |