Reentrant transition from an incipient charge-ordered state to a ferromagnetic metallic state in a rare-earth manganate

Arulraj, Anthony and Biswas, Amlan and Raychaudhuri, AK and Rao, CNR and Woodward, PM and Vogt, T and Cox, DE and Cheetham, AK (1998) Reentrant transition from an incipient charge-ordered state to a ferromagnetic metallic state in a rare-earth manganate. In: Physical Review B, 57 (14). pp. 8115-8118.

PDF Reentrant_transition.pdf - Published Version Restricted to Registered users only Download (112kB) | Request a copy

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 Angstrom. 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.

Item Type:	Journal Article
Publication:	Physical Review B
Publisher:	American Physical Society
Additional Information:	Copyright of this article belongs to American Physical Society.
Department/Centre:	Division of Chemical Sciences > Solid State & Structural Chemistry Unit Division of Physical & Mathematical Sciences > Physics
Date Deposited:	29 Dec 2009 11:15
Last Modified:	19 Sep 2010 05:26
URI:	http://eprints.iisc.ac.in/id/eprint/19119

Actions (login required)

View Item