Eur. Phys. J. B 61, 287-291 (2008)
https://doi.org/10.1140/epjb/e2008-00074-4

Resistive switching in β-SrV₆O₁₅

Institut de Physique de la matière complexe, EPFL, 1015 Lausanne, Switzerland

Corresponding author: ^a ana.akrap@epfl.ch

Received: 25 July 2007
Revised: 30 November 2007
Published online: 22 February 2008

Abstract

We investigate the pressure and temperature behavior of current-dependent resistivity of β-SrV₆O₁₅. We observe a switching between states of different resistivities in the insulating state of β-SrV₆O₁₅. In the low pressure phase, the resistive switching appears at temperatures below the semiconductor-insulator transition. In the high pressure phase, under ~1.6 GPa, the switching appears in the temperature range of the phase transition. The existence of switching may imply an important role of strontium off-stoichiometry for the electrical transport in β-SrV₆O₁₅. No electric-field-induced enhancement of the conductivity is observed. However, the conduction is significantly nonlinear under ~1.6 GPa, indicating that the charge order pattern in the high pressure phase is considerably different from that of the low pressure phase.