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Unusual Quantum Phase in Exactly Solvable Doubly Decorated Ising‐Heisenberg Models
Author(s) -
Strečka Jozef,
Jaščur Michal
Publication year - 2002
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(200210)233:3<r12::aid-pssb999912>3.0.co;2-2
Subject(s) - slovak , physics , ising model , citation , library science , condensed matter physics , philosophy , computer science , linguistics , czech
Ground-state properties of the spin-1/2 and spin-1 Ising-Heisenberg model ondoubly decorated planar lattices, are investigated in detail. On the basis ofthe mapping transformation method, we prove an existence of unusual quantumphases which occur due to the competition between Ising-type and XXZanizotropic Heisenberg-type interactions. Effect of the crystal field on theground-state phase boundaries has been also examined in detail.