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Title: Reentrant transition from an incipient charge-ordered state to a ferromagnetic metallic state in a rare-earth manganate
Authors: Arulraj, Anthony
Biswas, Amlan
Raychaudhuri, A K
Rao, C N R
Woodward, P M
Vogt, T
Cox, D E
Cheetham, A K
Keywords: Giant Magnetoresistance
Doped Lamno3
Issue Date: 1-Apr-1998
Publisher: American Physical Society
Citation: Physical Review B 57(14), R8115-R8118 (1998)
Abstract: A reentrant transition from an incipient charge-ordered (CO) state to a charge-delocalized ferromagnetic (CDFM) state has been established in the manganate Nd0.25La0.25Ca0.5MnO3, in which the average A-site ionic radius is 1.19 Å. The reentrant CDFM phase is associated with a first-order phase transition that reduces the orthorhombic distortion of the lattice, in contrast to the CO transition in other manganates where the orthorhombically distorted CO state is stabilized at low temperatures. At the CO-CDFM transition, there is a collapse of the charge-ordering gap as measured by vacuum tunneling spectroscopy.
Description: Restricted Access
Other Identifiers: 0163-1829
Appears in Collections:Research Papers (Prof. C.N.R. Rao)

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