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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2005, Volume 81, Issue 7, Pages 405–409
(Mi jetpl1712)
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This article is cited in 3 scientific papers (total in 3 papers)
CONDENSED MATTER
Quantum analogue of the spin-flop transition for a spin pair
B. A. Ivanov, V. E. Kireev Institute of Magnetism, National Academy of Sciences of Ukraine, Kiev
Abstract:
Quantum (step) magnetization curves have been analyzed for a spin pair with antiferromagnetic interaction in the presence of a magnetic field that is parallel to the easy magnetization axis. Both semiclassical and numerical analyses have been performed for a wide range of the anisotropy parameter and spins up to $S \gtrsim 100$. In the dependence of the anisotropy character (single-ion or exchange), a spin jump larger than unity can appear in the magnetization curve or jumps can be concentrated in a narrow range of the field. In addition, regions of the problem parameters have been revealed where behavior is semiclassical for low spins on the order of $S=5$ and where behavior is substantially quantum even for $S\to\infty$.
Received: 06.12.2004
Citation:
B. A. Ivanov, V. E. Kireev, “Quantum analogue of the spin-flop transition for a spin pair”, Pis'ma v Zh. Èksper. Teoret. Fiz., 81:7 (2005), 405–409; JETP Letters, 81:7 (2005), 321–325
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https://www.mathnet.ru/eng/jetpl1712 https://www.mathnet.ru/eng/jetpl/v81/i7/p405
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Abstract page: | 164 | Full-text PDF : | 58 | References: | 37 |
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