The double metamagnetic phase transition in an ising antiferromagnet with light-plane single-ion anisotropy and with ion spin S = 1
DOI:
https://doi.org/10.15407/dopovidi2018.09.064Keywords:
antiferromagnet, entropy, paramagnet, phase transitionsAbstract
It is shown that, in an Ising AFM with ion spin S = 1, a magnetic field at T ≠ 0 can induce a double metamagnetic transition in the form of a sequence of two quantum first-order magnetic phase transitions (QPT I) from a plateau in the magnetization between these transitions. In this case, the transition from the antiferromagnetic phase to the ferromagnetic phase occurs through the intermediate state formation, in which the sublattice spin initially magnetized against the magnetic field is in the Van Vleck paramagnetic state.
Downloads
References
Loktev, V. M. & Ostrovskii, V. S. (1999). The peculiarities of statics and dynamics of magnetic insulators with single-ion anisotropy. Low. Temp. Phys., 20, No. 10, pp. 983-1016 (in Russian).
Kalita, V. M. & Loktev, V. M. (2006). Quantum phase transitions and phase H — T diagram of Van-Vleck multi — sublattice antiferromagnet. Low. Temp. Phys., 32, No. 2, pp. 158-168 (in Russian). doi: https://doi.org/10.1063/1.2160508
Rozenfeld, E. V. (1976). Quantum magnetization jump with easy — plane anisotropy. JETP. Lett., 24, No. 2, pp. 50-53.
Stishov, S. M. (2004). Quantum phase transitions. Phys. Sci. Uspekhi, 174, No. 8, pp. 853-860 (in Russian). doi: https://doi.org/10.1070/PU2004v047n08ABEH001850
Vojta, M. (2003). Quantum phase transitions. Rep. Prog. Phys., 66, pp. 2069-2110. doi: https://doi.org/10.1088/0034-4885/66/12/R01
Koga, A., Kawakami, N. & Sigrist, M. (2003). Quantum phase transition of the S = 1 Shastry — Suyherland model. J. Phys. Soc. Jpn., 72. No. 4, pp. 938-942. doi: https://doi.org/10.1143/JPSJ.72.938
Kalita, V. M. & Loktev, V. M. (2005). On the sequence of quantum (meta) magnetic transitions in Ising antiferromagnets with single — ion anisotropy. Low. Phys. Temp., 31, No. 7, pp. 815-819 (in Russian). doi: https://doi.org/10.1063/1.2001647
Hertz, J. A. (1976). Quantum critical phenomena. Phys. Rev. B., 14, pp. 1165-. doi: https://doi.org/10.1103/PhysRevB.14.1165
Lavanov, G. Yu., Kalita, V. M., Ivanova, I. M. & Loktev, V. M. (2016). Magnetic quantum phase transitions and entropy in Van-Vleck magnet. JMMM., 416, pp. 466-474. doi: https://doi.org/10.1016/j.jmmm.2016.05.017
Shangina, E. L. & Dolgopolov, V. T. (2003). Quantum phase transitions in two — dimensional systems. Phys. Sci. Uspekhi, 173, No. 8, pp. 802-812 (in Russian). doi: https://doi.org/10.1070/PU2003v046n08ABEH001599
Zvezdin, A. K., Matveev, V. M., Mukhin, A. A. & Popov, A. I. (1985). Rare — earth ions in magnetically ordered crystals. Moscow: Nauka (in Russian).
Downloads
Published
How to Cite
Issue
Section
License
Copyright (c) 2024 Reports of the National Academy of Sciences of Ukraine
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
