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2010 | 118 | 5 | 736-737
Article title

Magnetic Properties of the Hubbard Model on Kagome Stripes

Content
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Languages of publication
EN
Abstracts
EN
We consider the one-orbital N-site repulsive Hubbard model on two kagome like chains, both of which yield a completely dispersionless (flat) one-electron band. Using exact many-electron ground states in the subspaces with n ≤ n_{max} (n_{max} ∝ N) electrons, we calculate the square of the total spin in the ground state to discuss magnetic properties of the models. We have found that although for n < n_{max} the ground states contain fully polarized states, there is no finite region of electron densities n/{\cal N} < 1 ({\cal N} = N/3 or {\cal N} = N/5) where ground-state ferromagnetism survives for {\cal N} → ∞.
Keywords
EN
Publisher

Year
Volume
118
Issue
5
Pages
736-737
Physical description
Dates
published
2010-11
Contributors
author
  • Institute for Condensed Matter Physics, NAS of Ukraine, 1 Svientsitskii Str., L'viv-11, 79011, Ukraine
  • Max-Planck-Institut für Physik Komplexer Systeme, Nöthnitzer Str. 38, 01187 Dresden, Germany
author
  • Institute for Condensed Matter Physics, NAS of Ukraine, 1 Svientsitskii Str., L'viv-11, 79011, Ukraine
author
  • Institut für Theoretische Physik, Universität Magdeburg, P.O. Box 4120, 39016 Magdeburg, Germany
author
  • Institut für Theoretische Physik, Georg-August-Universität, F.-Hund-Pl. 1, 37077 Göttingen, Germany
author
  • Max-Planck-Institut für Physik Komplexer Systeme, Nöthnitzer Str. 38, 01187 Dresden, Germany
References
  • 1. H. Tasaki, J. Phys.: Condens. Matter 10, 4353 (1998)
  • 2. A. Mielke, J. Phys. A 24, L73 (1991); 24, 3311 (1991); 25, 4335 (1992)
  • 3. H. Tasaki, Phys. Rev. Lett. 69, 1608 (1992)
  • 4. J. Schulenburg, A. Honecker, J. Schnack, J. Richter, H.-J. Schmidt, Phys. Rev. Lett. 88, 167207 (2002)
  • 5. O. Derzhko, J. Richter, Eur. Phys. J. B 52, 23 (2006)
  • 6. A. Honecker, J. Richter, Condens. Matter Phys. (L'viv) 8, 813 (2005)
  • 7. O. Derzhko, A. Honecker, J. Richter, Phys. Rev. B 76, 220402(R) (2007); 79, 054403 (2009)
  • 8. O. Derzhko, J. Richter, A. Honecker, M. Maksymenko, R. Moessner, Phys. Rev. B 81, 014421 (2010)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv118n5008kz
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