Pressure dependence of phase transitions in the quasi-one-dimensional metal-insulator transition system βNa1/3V2O5

G. Obermeier, D. Ciesla, S. Klimm, and S. Horn
Phys. Rev. B 66, 085117 – Published 29 August 2002
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Abstract

The pressure dependence of phase transitions in the quasi-one-dimensional vanadium oxide βNa1/3V2O5 has been studied by magnetic susceptibility and electrical resistivity measurements. The pressure dependence of the various transition temperatures is quite different. The transition at T=240K, previously reported and attributed to ordering on Na sites, and a second transition at T222K, reported here and attributed to a further increase of order on Na sites, are almost independent of pressure. On the other hand, the metal-insulator (MI) transition at TMI=130K shifts to lower temperatures, while the magnetic transition at TN=24K shifts to higher temperatures with increasing pressure. We discuss the different pressure dependencies of TMI and TN in terms of increasing interchain coupling and the MI transition to be of Peierls type.

  • Received 12 March 2002

DOI:https://doi.org/10.1103/PhysRevB.66.085117

©2002 American Physical Society

Authors & Affiliations

G. Obermeier, D. Ciesla, S. Klimm, and S. Horn

  • Universität Augsburg, D-86135 Augsburg, Germany

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Issue

Vol. 66, Iss. 8 — 15 August 2002

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