Magnetization Process and Adiabatic Demagnetization of the Antiferromagnetic Spin-1/2 Heisenberg Cubic Cluster

• Authors: J. Strečka , J. Čisárová
• Languages of publication: EN

Abstracts

EN

A full energy spectrum of the spin-1/2 Heisenberg cubic cluster is used to investigate a low-temperature magnetization process and adiabatic demagnetization of this zero-dimensional 2×2×2 quantum spin system. It is shown that the antiferromagnetic spin-1/2 Heisenberg cube exhibits at low enough temperatures a stepwise magnetization curve with four intermediate plateaux at zero, one quarter, one half, and three quarters of the saturation magnetization. We have also found the enhanced magnetocaloric effect close to level-crossing fields that determine transitions between the intermediate plateaux.

Keywords

EN

75.10.Jm; 75.30.Sg; 75.40.Cx; 75.50.Ee; 75.60.Ej

Discipline

• 75.50.Ee: Antiferromagnetics
• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 75.60.Ej: Magnetization curves, hysteresis, Barkhausen and related effects(for hysteresis in ferroelectricity, see 77.80.Dj)
• 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: 26-27

Dates

published

2014-07

Contributors

author

J. Strečka

• Institute of Physics, Faculty of Science, P. J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

author

J. Čisárová

• Institute of Physics, Faculty of Science, P. J. Šafárik University, Park Angelinum 9, 040 01 Košice, Slovakia

References

• [1] J.R. Friedman, M.P. Sarachik, Annu. Rev. Condens. Matter Phys. 1, 109 (2010), doi: 10.1146/annurev-conmatphys-070909-104053
• [2] J. Schnack, J. Low. Temp. Phys. 142, 279 (2006), doi: 10.1007/BF02679508
• [3] G. Dresselhaus, Phys. Rev. 126, 1664 (1962), doi: 10.1103/PhysRev.126.1664
• [4] Ch. Kawabata, M. Suzuki, J. Phys. Soc. Jpn. 28, 16 (1970), doi: 10.1143/JPSJ.28.16
• [5] P.N. Moustanis, S. Thanos, Physica B 202, 65 (1994), doi: 10.1016/0921-4526(94)90182-1

Identifiers

DOI

10.12693/APhysPolA.126.26