Kinetically-Driven Frustration in Hybrid Spin Ladders

• Authors: R. Carvalho , M. Pereira , M. Lyra , O. Rojas , J Strecka
• Languages of publication: EN

Abstracts

EN

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.

Keywords

EN

75.10.Jm; 75.10.Pq; 05.70.Ce

Discipline

• 75.10.Pq: Spin chain models
• 05.70.Ce: Thermodynamic functions and equations of state(see also 51.30.+i Thermodynamic properties, equations of state in physics of gases; for equations of state of specific substances, see 64.30.-t; for equations of state of nuclear matter, and of neutron-star matter, see 21.65.Mn and 26.60.Kp, respectively; see also 95.30.Tg in astronomy; for thermodynamic properties of superconductors, see 74.25.Bt)
• 75.10.Jm: Quantized spin models, including quantum spin frustration

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 126
• Issue: 1
• Pages: 12-13

Dates

published

2014-07

Contributors

author

R. Carvalho

• Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceio-AL, Brazil

author

M. Pereira

• Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceio-AL, Brazil

author

M. Lyra

• Instituto de Fisica, Universidade Federal de Alagoas, 57072-970 Maceio-AL, Brazil

author

O. Rojas

• Departamento de Ciencias Exatas, Universidade Federal de Lavras, 37200-000, Lavras-MG, Brazil

author

J Strecka

• Department of Theoretical Physics and Astrophysics, Faculty of Science, P.J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

References

• [1] M.S.S. Pereira, F.A.B.F. de Moura, M.L. Lyra, Phys. Rev. B 77, 024402 (2008), doi: 10.1103/PhysRevB.77.024402
• [2] M.S.S. Pereira, F.A.B.F. de Moura, M.L. Lyra, Phys. Rev. B 79, 054427 (2009), doi: 10.1103/PhysRevB.79.054427
• [3] J. Strecka, A. Tanaka, M. Jascur, J. Phys.: Conf. Series 220, 022059 (2010), doi: 10.1088/1742-6596/200/2/022059
• [4] J. Strecka, A. Tanaka, L. Canova, T. Verkholyak, Phys. Rev. B 80, 174410 (2010), doi: 10.1103/PhysRevB.80.174410

Identifiers

DOI

10.12693/APhysPolA.126.12