Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy

M. K. Dalai; P. Pal; B. R. Sekhar; N. L. Saini; R. K. Singhal; K. B. Garg; B. Doyle; S. Nannarone; C. Martin; F. Studer

doi:10.1103/PhysRevB.74.165119

Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy

M. K. Dalai, P. Pal, B. R. Sekhar, N. L. Saini, R. K. Singhal, K. B. Garg, B. Doyle, S. Nannarone, C. Martin, F. Studer

Research output: Contribution to journal › Article › peer-review

19 Citations (Scopus)

Abstract

We have investigated the temperature-dependent changes in the near- EF occupied and unoccupied states of Pr0.67 Ca0.33 MnO3 which shows the presence of ferromagnetic and antiferromagnetic phases. The temperature-dependent changes in the charge and orbital degrees of freedom and associated changes in the Mn 3d-O 2p hybridization result in varied O 2p contributions to the valence band. A quantitative estimate of the charge transfer energy (ECT) shows a larger value compared to the earlier reported estimates. The charge localization causing the large ECT is discussed in terms of different models including the electronic phase separation.

Original language	English
Article number	165119
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	74
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.74.165119
Publication status	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.74.165119

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Dalai, M. K., Pal, P., Sekhar, B. R., Saini, N. L., Singhal, R. K., Garg, K. B., Doyle, B., Nannarone, S., Martin, C., & Studer, F. (2006). Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy. Physical Review B - Condensed Matter and Materials Physics, 74(16), Article 165119. https://doi.org/10.1103/PhysRevB.74.165119

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title = "Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy",

abstract = "We have investigated the temperature-dependent changes in the near- EF occupied and unoccupied states of Pr0.67 Ca0.33 MnO3 which shows the presence of ferromagnetic and antiferromagnetic phases. The temperature-dependent changes in the charge and orbital degrees of freedom and associated changes in the Mn 3d-O 2p hybridization result in varied O 2p contributions to the valence band. A quantitative estimate of the charge transfer energy (ECT) shows a larger value compared to the earlier reported estimates. The charge localization causing the large ECT is discussed in terms of different models including the electronic phase separation.",

author = "Dalai, \{M. K.\} and P. Pal and Sekhar, \{B. R.\} and Saini, \{N. L.\} and Singhal, \{R. K.\} and Garg, \{K. B.\} and B. Doyle and S. Nannarone and C. Martin and F. Studer",

year = "2006",

doi = "10.1103/PhysRevB.74.165119",

language = "English",

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journal = "Physical Review B - Condensed Matter and Materials Physics",

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Dalai, MK, Pal, P, Sekhar, BR, Saini, NL, Singhal, RK, Garg, KB, Doyle, B, Nannarone, S, Martin, C & Studer, F 2006, 'Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy', Physical Review B - Condensed Matter and Materials Physics, vol. 74, no. 16, 165119. https://doi.org/10.1103/PhysRevB.74.165119

TY - JOUR

T1 - Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy

AU - Dalai, M. K.

AU - Pal, P.

AU - Sekhar, B. R.

AU - Saini, N. L.

AU - Singhal, R. K.

AU - Garg, K. B.

AU - Doyle, B.

AU - Nannarone, S.

AU - Martin, C.

AU - Studer, F.

PY - 2006

Y1 - 2006

N2 - We have investigated the temperature-dependent changes in the near- EF occupied and unoccupied states of Pr0.67 Ca0.33 MnO3 which shows the presence of ferromagnetic and antiferromagnetic phases. The temperature-dependent changes in the charge and orbital degrees of freedom and associated changes in the Mn 3d-O 2p hybridization result in varied O 2p contributions to the valence band. A quantitative estimate of the charge transfer energy (ECT) shows a larger value compared to the earlier reported estimates. The charge localization causing the large ECT is discussed in terms of different models including the electronic phase separation.

AB - We have investigated the temperature-dependent changes in the near- EF occupied and unoccupied states of Pr0.67 Ca0.33 MnO3 which shows the presence of ferromagnetic and antiferromagnetic phases. The temperature-dependent changes in the charge and orbital degrees of freedom and associated changes in the Mn 3d-O 2p hybridization result in varied O 2p contributions to the valence band. A quantitative estimate of the charge transfer energy (ECT) shows a larger value compared to the earlier reported estimates. The charge localization causing the large ECT is discussed in terms of different models including the electronic phase separation.

UR - https://www.scopus.com/pages/publications/33750456969

U2 - 10.1103/PhysRevB.74.165119

DO - 10.1103/PhysRevB.74.165119

M3 - Article

AN - SCOPUS:33750456969

SN - 1098-0121

VL - 74

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 16

M1 - 165119

ER -

Electronic structure of Pr0.67 Ca0.33 MnO3 near the Fermi level studied by ultraviolet photoelectron and x-ray absorption spectroscopy

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