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Nanometer-scale phase separation in a colossal magnetoresistive manganite

Roßler, S and Ernst, S and Padmanabhan, B and Elizabeth, Suja and Bhat, HL and Steglich, F and Wirth, S (2008) Nanometer-scale phase separation in a colossal magnetoresistive manganite. In: Europhysics Letters, 83 . 17009-p1-17009-p5.

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Abstract

Scanning tunneling microscopy and spectroscopy were conducted over a broad temperature range on single crystals of $Pr_{0.68}Pb_{0.32}MnO_3$. Spectroscopic studies revealed inhomogeneous maps of the zero-bias conductance with a broad distribution of the local conductivities only within a narrow temperature range close to the metal-insulator transition.An analysis of the conductance histograms based on these maps gave direct evidence for phase separation into insulating and conducting areas. This phase separation was found to be confined only to the transition region.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Institute of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 13 Oct 2008 06:34
Last Modified: 19 Sep 2010 04:50
URI: http://eprints.iisc.ernet.in/id/eprint/15986

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