Journal
SOLID STATE COMMUNICATIONS
Volume 159, Issue -, Pages 26-28Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2013.01.012
Keywords
Oxides; Pressure; Superconductivity; Phase transitions
Categories
Funding
- CAPES
- Cnpq
- project TetraFer of the Agence Nationale de la Recherche of France [ANR-09-BLAN-0211]
- Agence Nationale de la Recherche (ANR) [ANR-09-BLAN-0211] Funding Source: Agence Nationale de la Recherche (ANR)
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We have performed electrical resistivity measurements under pressures up to 20 GPa between 1 and 300 K on monocrystalline hexagonal Rb0.19WO3. For pressures lower than similar to 5 GPa, we observe a decrease of the metallic-like resistivity at room temperature as well as a small decrease of T-c. At this pressure, the resistivity starts to increase slowly up to 10 GPa accompanied by a sharper decrease of T-c.The resistivity curves above 10 GPa denote an activated behaviour and a T-c lower than 3 K indicating that there is a phase transition that takes place gradually between 5 and 10 GPa. We interpret our measurements as the result of structural transformations under high pressure. (c) 2013 Elsevier Ltd. All rights reserved.
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