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Effect of the Canting of Local Anisotropy Axes on Ground-State Properties of a Ferrimagnetic Chain with Regularly Alternating Ising and Heisenberg Spins

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Torrico J., Lyra M., Rojas O., de Souza S., Strečka J.

Acta Physica Polonica A

2017

vol. 131

issue 4

621-623

The effect of the canting of local anisotropy axes on the ground-state phase diagram and magnetization of a ferrimagnetic chain with regularly alternating Ising and Heisenberg spins is exactly examined in an arbitrarily oriented magnetic field. It is shown that individual contributions of the Ising and Heisenberg spins to the total magnetization basically depend on the spatial orientation of the magnetic field and the canting angle between two different local anisotropy axes of the Ising spins.

Kinetically-Driven Frustration in Hybrid Spin Ladders

100%

Carvalho R., Pereira M., Lyra M., Rojas O., Strecka J.

Acta Physica Polonica A

2014

vol. 126

issue 1

12-13

We introduce a spin ladder model incorporating localized and delocalized spins, which is exactly solvable using the decoration-iteration and transfer-matrix techniques. Quantum correlations between delocalized spins induce an antiferromagnetic coupling between the spin chains that competes with a direct ferromagnetic exchange coupling. A resulting kinetically-driven frustration is predominant in the regime of low temperatures and large hopping amplitudes. We provide the full ground-state phase diagram, as well as the frustration diagram on distinct coupling regimes.

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2 Acta Physica Polonica A

1 2017

1 2014

2 Lyra M.

2 Rojas O.

1 Carvalho R.

1 Pereira M.

1 Strecka J.

1 Strečka J.

1 Torrico J.

1 de Souza S.

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Effect of the Canting of Local Anisotropy Axes on Ground-State Properties of a Ferrimagnetic Chain with Regularly Alternating Ising and Heisenberg Spins

Kinetically-Driven Frustration in Hybrid Spin Ladders