Dalai, M. K. and Pal, P. and Sekhar, B. R. and Merz, M. and Nagel, P. and Schuppler, S. and Martin, C. (2012) Electronic structure of the electron-doped Ca0.86Pr0.14MnO3. Physical Review B , 85 (15). pp. 155128-155132. ISSN 1098-0121

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Abstract

We have studied the temperature-dependent changes in the near E-F electronic structure of the electron-doped, phase separated colossal magnetoresistance (CMR) compound, Ca0.86Pr0.14MnO3 using photoemission and x-ray absorption studies. At low temperatures, this compound shows a high e(g) electron density near the E-F though the compound is insulating. Photoemission measurements further showed a temperature dependence of the e(g) electron occupation and localization while the complementary results of XAS showed corresponding changes in the number of unoccupied states. Our results indicate a transfer of charges from the t(2g) states to the e(g) band, probably due to a decrease in the crystal field splitting in the ferromagnetic metallic (FMM) phase following the structural changes of the MnO6 octahedra at low temperatures. We have interpreted our results from a FMM-antiferromagnetic insulating (AFMI) phase separation scenario.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/s American Physical Society.
Subjects:	Applied Physics/Condensed Matter
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	04 Mar 2020 11:26
Last Modified:	04 Mar 2020 11:26
URI:	http://npl.csircentral.net/id/eprint/3594

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