• DOI:10.1103/PhysRevB.61.9875
• Corpus ID: 118820838

Fluctuation-driven insulator-to-metal transition in an external magnetic field

@article{Jani1999FluctuationdrivenIT,
  title={Fluctuation-driven insulator-to-metal transition in an external magnetic field},
  author={V{\'a}clav Jani{\vs} and Gerd Czycholl},
  journal={Physical Review B},
  year={1999},
  volume={61},
  pages={9875-9878}
}

• V. Janiš, G. Czycholl
• Published 17 August 1999
• Physics
• Physical Review B

Institut fu¨r Theoretische Physik, Universit¨at Bremen, PO Box 330440, D-28334 Bremen, Germany(February 1, 2008)We consider a model for a metal-insulator transition of correlated electrons in an external magneticfield. We find a broad region in interaction and magnetic field where metallic and insulating (fullymagnetized) solutions coexist and the system undergoes a first-order metal-insulator transition. Aglobal instability of the magnetically saturated solution precedes the local ones and is caused bycollective fluctuations due to poles in electron-hole vertex functions.PACS numbers: 71.30.+h,75.30.Kz,71.28.+d