Temperature dependence of the electronic structure of the charge-ordering manganite

A. Chainani; H. Kumigashira; T. Takahashi; Y. Tomioka; H. Kuwahara; Y. Tokura

doi:10.1103/PhysRevB.56.R15513

Temperature dependence of the electronic structure of the charge-ordering manganite

A. Chainani, H. Kumigashira, T. Takahashi, Y. Tomioka, H. Kuwahara, Y. Tokura

Advanced Institute for Materials Research (AIMR)

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

27 Citations (Scopus)

Abstract

We study the changes in the occupied density of states of (Formula presented) as a function of temperature (25-300 K) using photoemission spectroscopy. The spectral weight transfer across the metal-insulator/charge-ordering/ferromagnetic-antiferromagnetic transition is abrupt and over very large energy scales (up to 1.2 eV from the Fermi level (Formula presented) compared to the transition temperature (Formula presented) (∼12 meV) and the gap value in the insulating phase (∼100 meV). Negligible changes observed at (Formula presented) in the ferromagnetic-metallic phase above (Formula presented) and a weak spectral weight transfer across the ferromagnetic-paramagnetic transition at (Formula presented) are consistent with negligible change in carrier density above (Formula presented).

Original language	English
Pages (from-to)	R15513-R15516
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	56
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.56.R15513
Publication status	Published - 1997 Jan 1

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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abstract = "We study the changes in the occupied density of states of (Formula presented) as a function of temperature (25-300 K) using photoemission spectroscopy. The spectral weight transfer across the metal-insulator/charge-ordering/ferromagnetic-antiferromagnetic transition is abrupt and over very large energy scales (up to 1.2 eV from the Fermi level (Formula presented) compared to the transition temperature (Formula presented) (∼12 meV) and the gap value in the insulating phase (∼100 meV). Negligible changes observed at (Formula presented) in the ferromagnetic-metallic phase above (Formula presented) and a weak spectral weight transfer across the ferromagnetic-paramagnetic transition at (Formula presented) are consistent with negligible change in carrier density above (Formula presented).",

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T1 - Temperature dependence of the electronic structure of the charge-ordering manganite

AU - Chainani, A.

AU - Kumigashira, H.

AU - Takahashi, T.

AU - Tomioka, Y.

AU - Kuwahara, H.

AU - Tokura, Y.

PY - 1997/1/1

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N2 - We study the changes in the occupied density of states of (Formula presented) as a function of temperature (25-300 K) using photoemission spectroscopy. The spectral weight transfer across the metal-insulator/charge-ordering/ferromagnetic-antiferromagnetic transition is abrupt and over very large energy scales (up to 1.2 eV from the Fermi level (Formula presented) compared to the transition temperature (Formula presented) (∼12 meV) and the gap value in the insulating phase (∼100 meV). Negligible changes observed at (Formula presented) in the ferromagnetic-metallic phase above (Formula presented) and a weak spectral weight transfer across the ferromagnetic-paramagnetic transition at (Formula presented) are consistent with negligible change in carrier density above (Formula presented).

AB - We study the changes in the occupied density of states of (Formula presented) as a function of temperature (25-300 K) using photoemission spectroscopy. The spectral weight transfer across the metal-insulator/charge-ordering/ferromagnetic-antiferromagnetic transition is abrupt and over very large energy scales (up to 1.2 eV from the Fermi level (Formula presented) compared to the transition temperature (Formula presented) (∼12 meV) and the gap value in the insulating phase (∼100 meV). Negligible changes observed at (Formula presented) in the ferromagnetic-metallic phase above (Formula presented) and a weak spectral weight transfer across the ferromagnetic-paramagnetic transition at (Formula presented) are consistent with negligible change in carrier density above (Formula presented).

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