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Direct measurement of the charge ordering gap in Nd0.5Sr0.5MnO3 using vacuum tunnelling

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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


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