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Microwave properties of Nd0.5Sr0.5MnO3: a key role of the (x(2)-y(2))-orbital effects
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UNSPECIFIED (2002) Microwave properties of Nd0.5Sr0.5MnO3: a key role of the (x(2)-y(2))-orbital effects. SOLID STATE COMMUNICATIONS, 121 (2-3). pp. 117-121. ISSN 0038-1098.
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Abstract
Transmittance of the colossal magnetoresistive compound Nd0.5Sr0.5MnO3 showing metal-insulator phase transition has been studied by means of the submm- and mm-wavelength band spectroscopy. An unusually high transparency of the material provided direct evidence for the significant suppression of the coherent Drude-weight in the ferromagnetic metallic State. Melting of the A-type antiferromagnetic states has been found to be responsible for a considerable increase in the microwave transmission, which was observed at the transition from the insulating to the metallic phase induced by magnetic field or temperature. This investigation confirmed a dominant role of the (x(2)-y(2))-orbital degree of freedom in the low-energy optical properties of Nd0.5Sr0.5MnO3 and other doped manganites with planar (x(2)-y(2))-orbital order, as predicted theoretically. The results are discussed ill terms of the orbital-liquid concept. (C) 2002 Elsevier Science Ltd. All rights reserved.
| Item Type: | Journal Article | ||||
|---|---|---|---|---|---|
| Subjects: | Q Science > QC Physics | ||||
| Journal or Publication Title: | SOLID STATE COMMUNICATIONS | ||||
| Publisher: | PERGAMON-ELSEVIER SCIENCE LTD | ||||
| ISSN: | 0038-1098 | ||||
| Official Date: | 2002 | ||||
| Dates: |
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| Volume: | 121 | ||||
| Number: | 2-3 | ||||
| Number of Pages: | 5 | ||||
| Page Range: | pp. 117-121 | ||||
| Publication Status: | Published |
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