Details

Autor(en) / Beteiligte

• Ivanov, Nedko B
• Petrova, Svetozara I
• Schnack, Jurgen

Titel

Alternating-spin S = 3/2 and [sigma] = 1/2 heisenberg chain with isotropic three-body exchange interactions

Ist Teil von

• The European physical journal. B, Condensed matter physics, 2016-05, Vol.89 (5)

Ort / Verlag

Springer

Erscheinungsjahr

2016

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The promotion of collinear classical spin configurations as well as the enhanced tendency towards nearest-neighbor clustering of the quantum spins are typical features of the frustrating isotropic three-body exchange interactions in Heisenberg spin systems. Based on numerical density-matrix renormalization group calculations, we demonstrate that these extra interactions in the Heisenberg chain constructed from alternating S = 3/2 and [sigma] = 1/2 site spins can generate numerous specific quantum spin states, including some partially-polarized ferrimagnetic states as well as a doubly-degenerate non-magnetic gapped phase. In the non-magnetic region of the phase diagram, the model describes a crossover between the spin-1 and spin-2 Haldane-type states.