Please use this identifier to cite or link to this item: http://lib.jncasr.ac.in:8080/jspui/handle/10572/1110
Title: Temperature-dependent vacuum tunneling spectroscopy of rare-earth manganates showing colossalmagnetoresistance and charge ordering
Authors: Biswas, A
Raychaudhuri, A K
Arulraj, A
Rao, C N R
Keywords: Giant Magnetoresistance
Phase-Transition
Doped Lamno3
Perovskites
Density
Issue Date: Mar-1998
Publisher: Springer Verlag
Citation: Applied Physics A-Materials Science & Processing 66, S1213-S1216 (1998)
Abstract: We report here the results of vacuum tunneling spectroscopy of race-earth manganates which show colossal magnetoresistance (CMR) and charge ordering (CO). Three samples with different hole concentrations and average A site cation radii have been studied. A charge-ordering gap (Delta(CO)) opens up in the density of states (DOS) near EF, below the charge-ordering transition. A gap comparable to the transport gap opens up in the paramagnetic state also. There is an absence of gap only in the ferromagnetic metallic state. We have measured the temperature dependence of these quantities.
Description: Proceedings Paper. Restricted Access.
URI: http://hdl.handle.net/10572/1110
Other Identifiers: 0947-8396
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

Files in This Item:
File Description SizeFormat 
sl.no30.1998.Appl. Phys. A 66, S1213–S1216 ().pdf
  Restricted Access
163.6 kBAdobe PDFView/Open Request a copy


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.