Resistive switching in β-SrV6O15
Institut de Physique de la matière complexe, EPFL, 1015 Lausanne, Switzerland
Corresponding author: a firstname.lastname@example.org
Revised: 30 November 2007
Published online: 22 February 2008
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.
PACS: 71.30.+h – Metal-insulator transitions and other electronic transitions / 72.60.+g – Mixed conductivity and conductivity transitions
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2008