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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 79, Issue 1, Pages 59–62
(Mi jetpl2207)
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CONDENSED MATTER
Quantum magnetostriction oscillations in a two-dimensional antiferromagnet with spin-phonon interaction in a magnetic field
S. S. Aplesnin L. V. Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences
Abstract:
The ground state of a two-dimensional antiferromagnet with $S=1/2$ interacting with acoustic phonons in a magnetic field was studied by the quantum Monte Carlo method in the nonadiabatic approximation. Oscillations of the amplitude of the root-mean-square displacement of ions and the average phonon occupation number in a magnetic field were found. Local maxima were revealed in the distribution functions of site magnetic moments and ion displacements. The saturation magnetization was calculated as a function of the spin-phonon coupling constant.
Received: 08.12.2003
Citation:
S. S. Aplesnin, “Quantum magnetostriction oscillations in a two-dimensional antiferromagnet with spin-phonon interaction in a magnetic field”, Pis'ma v Zh. Èksper. Teoret. Fiz., 79:1 (2004), 59–62; JETP Letters, 79:1 (2004), 53–56
Linking options:
https://www.mathnet.ru/eng/jetpl2207 https://www.mathnet.ru/eng/jetpl/v79/i1/p59
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Abstract page: | 163 | Full-text PDF : | 58 | References: | 28 |
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