Magnetic-field-induced transition in BaVS3

P. Fazekas, N. Barišić, I. Kézsmárki, L. Demkó, H. Berger, L. Forró, and G. Mihály
Phys. Rev. B 75, 035128 – Published 29 January 2007

Abstract

The metal-insulator transition (MIT) of BaVS3 is suppressed under pressure, and above the critical pressure of pcr2GPa the metallic phase is stabilized. We present the results of detailed magnetoresistivity measurements carried out at pressures near the critical value in magnetic fields up to B=12T. We found that slightly below the critical pressure the structural tetramerization—which drives the MIT—is combined with the onset of magnetic correlations. If the zero-field transition temperature is suppressed to a sufficiently low value (TMI15K), the system can be driven into the metallic state by application of magnetic field. The main effect is not the reduction of TMI with increasing B, but rather the broadening of the transition due to the applied magnetic field. We tentatively ascribe this phenomenon to the influence on the magnetic structure coupled to the bond order of the tetramers.

  • Figure
  • Figure
  • Figure
  • Figure
  • Figure
  • Received 12 July 2006

DOI:https://doi.org/10.1103/PhysRevB.75.035128

©2007 American Physical Society

Authors & Affiliations

P. Fazekas1,2, N. Barišić3, I. Kézsmárki1, L. Demkó1, H. Berger3, L. Forró3, and G. Mihály1

  • 1Institute of Physics, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
  • 2Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, H-1525 Budapest, P.O. Box 49, Hungary
  • 3Institut de Physique de la Matiére Complexe, EPFL, CH-1015 Lausanne, Switzerland

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 75, Iss. 3 — 15 January 2007

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review B

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×