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Formation of clusters in the 2D t-J model: The mechanism for phase separation

Fledderjohann, A ; Sharif University of Technology | 2006

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  1. Type of Document: Article
  2. DOI: 10.1088/0953-8984/18/20/017
  3. Publisher: 2006
  4. Abstract:
  5. The emergence of phase separation is investigated in the framework of a 2D t-J model by means of a variational product ansatz, which covers the infinite lattice by two types of L × L clusters. Clusters of the first type are completely occupied with electrons, i.e. they carry maximal charge Qe = L2 and total spin 0, and thereby form the antiferromagnetic background. Holes occur in the second type of clusters - called 'hole clusters'. They carry a charge Qh0.5) it turns out that hole clusters are occupied with an even number Qh
  6. Keywords:
  7. Antiferromagnetism ; Current density ; Electric charge ; Electrons ; Optimization ; Phase separation ; Boundary curve ; Hole clusters ; Hole density ; Infinite lattice ; Tunnel junctions
  8. Source: Journal of Physics Condensed Matter ; Volume 18, Issue 20 , 2006 , Pages 4935-4944 ; 09538984 (ISSN)
  9. URL: https://iopscience.iop.org/article/10.1088/0953-8984/18/20/017