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Stability of Interchain Coupled Organic Ferromagnets with Non‐Nearest Neighbor Hopping Interactions
Author(s) -
Zhao L.,
Yao K.L.,
Wang W.Z.
Publication year - 2000
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(200005)219:1<163::aid-pssb163>3.0.co;2-x
Subject(s) - k nearest neighbors algorithm , ferromagnetism , condensed matter physics , ground state , electron , stability (learning theory) , variable range hopping , spin (aerodynamics) , materials science , physics , thermal conduction , quantum mechanics , computer science , artificial intelligence , machine learning , thermodynamics
Based on a theoretical model proposed for interchain coupled quasi‐one‐dimensional organic ferromagnets, the stability of the high‐spin ground state of the system is studied. The non‐nearest neighbor hopping interactions as well as the electron–phonon and electron–electron interaction are taken into account. It is shown that when the second‐nearest neighbor hopping interaction increases, the energy gap decreases, which destablizes the ferromagnetic ground state while the third‐nearest neighbor hopping interaction makes it stable.