Partial ferromagnetism in semimetallic systems: Numerical calculation and rigorous proof

Shinji Watanabe, Koichi Kusakabe, Yoshio Kuramoto

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)


The ground-state properties of the two-band Hubbard model (TBHM) with semimetallic-band structures are studied by using numerical and analytical methods. Based on the density matrix renormalization group calculation in one dimension (1D), we find that the partially ferromagnetic state is realized by doping the compensated semimetal in the intermediate-coupling regime. We present an exact proof of partial ferromagnetism by using the Perron-Frobenius theorem in a 1D strongly correlated electron model derived from TBHM.

Original languageEnglish
Pages (from-to)811-812
Number of pages2
JournalPhysica B: Condensed Matter
Publication statusPublished - 2002 Mar 1
EventInternational Conference on Strongly Correlated Electrons - Ann Arbor, MI, United States
Duration: 2002 Aug 62002 Aug 6


  • CaB
  • Partial ferromagnetism
  • Semimetal

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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