Ferrimagnetic States in S=1/2 Frustrated Heisenberg Chains with Period 3 Exchange Modulation

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dc.creatorHida, Kazuo
dc.date2006-08-26
dc.date.accessioned2026-07-07T07:54:40Z
dc.date.available2026-07-07T07:54:40Z
dc.descriptionGround state properties of the S=1/2 frustrated Heisenberg chain with period 3 exchange modulation are investigated using the numerical diagonalization and DMRG method. It is known that this model has a magnetization plateau at 1/3 of the saturation magnetization M_s. On the other hand, the ground state is ferrimagnetic even in the absence of frustration if one of the nearest neighbour bond is ferromagnetic and others are antiferromagnetic. In the present work, we show that this ferrimagnetic state continues to the region in which all bonds are antiferromagnetic if frustration is strong. This state further continues to the above mentioned 1/3-plateau state. In between, we also find the noncollinear ferrimagnetic phase in which the spontaneous magnetization is finite but less than M_s/3. The intuitive interpretation for the phase diagram is given and the physical properties of these phases are discussed.
dc.description6 pages, 8 figures, accepted for publication in J. Phys. Condens. Matter, Proceedings of Highly Frustrated Magnetism 2006 (Osaka)
dc.identifierhttps://arxiv.org/abs/cond-mat/0608582
dc.identifierhttp://arxiv.org/abs/cond-mat/0608582
dc.identifierJ. Phys.: Condens. Matter 19 (2007) 145225
dc.identifierdoi:10.1088/0953-8984/19/14/145225
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/126698
dc.subjectStrongly Correlated Electrons
dc.subjectStatistical Mechanics
dc.titleFerrimagnetic States in S=1/2 Frustrated Heisenberg Chains with Period 3 Exchange Modulation
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