On the energy spectrum and thermodynamics of decorated quasi-one-dimensional magnetic systems with uniaxial anisotropy

2021 ◽  
Vol 47 (6) ◽  
pp. 473-477
Author(s):  
E. V. Ezerskaya
Keyword(s):  
Energy Spectrum ◽  
Uniaxial Anisotropy ◽  
Magnetic Systems ◽  
One Dimensional

scholarly journals Quasi-1D XY antiferromagnet Sr2Ni(SeO3)2Cl2 at Sakai-Takahashi phase diagram

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
E. S. Kozlyakova ◽  
A. V. Moskin ◽  
P. S. Berdonosov ◽  
V. V. Gapontsev ◽  
S. V. Streltsov ◽  
...  
Keyword(s):  
Phase Diagram ◽  
Long Range ◽  
Density Functional ◽  
Uniaxial Anisotropy ◽  
Exchange Interactions ◽  
Spin Liquid ◽  
Functional Theory ◽  
One Dimensional ◽  
Ordered Phases ◽  
Experimental Findings

AbstractUniform quasi-one-dimensional integer spin compounds are of interest as a potential realization of the Haldane conjecture of a gapped spin liquid. This phase, however, has to compete with magnetic anisotropy and long-range ordered phases, the implementation of which depends on the ratio of interchain J′ and intrachain J exchange interactions and both uniaxial D and rhombic E single-ion anisotropies. Strontium nickel selenite chloride, Sr2Ni(SeO3)2Cl2, is a spin-1 chain system which passes through a correlations regime at Tmax ~ 12 K to long-range order at TN = 6 K. Under external magnetic field it experiences the sequence of spin-flop at Bc1 = 9.0 T and spin-flip transitions Bc2 = 23.7 T prior to full saturation at Bsat = 31.0 T. Density functional theory provides values of the main exchange interactions and uniaxial anisotropy which corroborate the experimental findings. The values of J′/J = 0.083 and D/J = 0.357 place this compound into a hitherto unoccupied sector of the Sakai-Takahashi phase diagram.

Gap-labeling properties of the energy spectrum for one-dimensional Fibonacci quasilattices

1992 ◽  
Vol 46 (14) ◽  
pp. 9216-9219 ◽  
Author(s):  
Youyan Liu ◽  
Xiujun Fu ◽  
Wenji Deng ◽  
Shizhong Wang
Keyword(s):  
Energy Spectrum ◽  
One Dimensional

scholarly journals Algebraic approach for the one-dimensional Dirac–Dunkl oscillator

2020 ◽  
Vol 35 (31) ◽  
pp. 2050255
Author(s):  
D. Ojeda-Guillén ◽  
R. D. Mota ◽  
M. Salazar-Ramírez ◽  
V. D. Granados
Keyword(s):  
Energy Spectrum ◽  
Irreducible Representation ◽  
Differential Equations ◽  
Representation Theory ◽  
Algebraic Approach ◽  
The Other ◽  
One Dimensional ◽  
The One

We extend the (1 + 1)-dimensional Dirac–Moshinsky oscillator by changing the standard derivative by the Dunkl derivative. We demonstrate in a general way that for the Dirac–Dunkl oscillator be parity invariant, one of the spinor component must be even, and the other spinor component must be odd, and vice versa. We decouple the differential equations for each of the spinor component and introduce an appropriate su(1, 1) algebraic realization for the cases when one of these functions is even and the other function is odd. The eigenfunctions and the energy spectrum are obtained by using the su(1, 1) irreducible representation theory. Finally, by setting the Dunkl parameter to vanish, we show that our results reduce to those of the standard Dirac-Moshinsky oscillator.

scholarly journals Accelerated procedure to solve kinetic equation for neutral atoms in a hot plasma

2018 ◽  
Vol 09 (05) ◽  
pp. 1850048 ◽  
Author(s):  
Mikhail Z. Tokar
Keyword(s):  
Monte Carlo ◽  
Kinetic Equation ◽  
Energy Spectrum ◽  
Erosion Rate ◽  
Fusion Reactor ◽  
Two Dimensional ◽  
First Wall ◽  
One Dimensional ◽  
Hot Plasma ◽  
Electrons And Ions

By reaching the first wall of a fusion reactor, charged plasma particles, electrons and ions are recombined into neutral molecules and atoms of hydrogen isotopes. These species recycle back into the plasma volume and participate, in particular, in charge–exchange (cx) collisions with ions. As a result, hot atoms with chaotically directed velocities are generated and some of them hit the wall. Statistical Monte Carlo methods often used to model the behavior of cx atoms are too time-consuming for comprehensive parameter studies. Recently1 an alternative iteration approach to solve one-dimensional kinetic equation2 has been significantly accelerated, by a factor of 30–50, by applying a pass method to evaluate the arising integrals from functions, involving the ion velocity distribution. Here, this approach is used by solving a two-dimensional kinetic equation, describing the transport of cx atoms in the vicinity of an opening in the wall, e.g., the entrance of a duct guiding to a diagnostic installation. To assess the erosion rate and lifetime of the installation, one need to know the energy spectrum of hot cx atoms escaping from the plasma into the duct. Calculations are done for a first mirror of molybdenum under plasma conditions expected in a fusion reactor like DEMO.3,4 The results of kinetic modeling are compared with those found by using a diffusion approximation5 relevant for cx atoms if the time between cx collisions with ions is much smaller than the time till the ionization of atoms by electrons. The present more exact kinetic consideration predicts a mirror erosion rate by a factor of 2 larger than the approximate diffusion approach.

Effect of Low-Symmetric Spin Distribution on EPR Lines in One-Dimensional Magnetic Systems

1979 ◽  
Vol 46 (6) ◽  
pp. 1949-1950 ◽  
Author(s):  
Yuhei Natsume ◽  
Fumiyoshi Sasagawa ◽  
Masaaki Toyoda ◽  
Isao Yamada
Keyword(s):  
Spin Distribution ◽  
Magnetic Systems ◽  
One Dimensional

Pseudoparticle contributions to the energy spectrum of a one-dimensional system

1977 ◽  
Vol 16 (2) ◽  
pp. 423-430 ◽  
Author(s):  
Eldad Gildener ◽  
Adrian Patrascioiu
Keyword(s):  
Energy Spectrum ◽  
Dimensional System ◽  
One Dimensional

Magnetic Heat Capacity and Susceptibility of the pseudo-One-Dimensional Magnetic Systems TlFeS2 and TlFeSe2

1990 ◽  
Vol 159 (2) ◽  
pp. K107-K110 ◽  
Author(s):  
M. A. Aldzhanov ◽  
N. G. Guseinov ◽  
G. D. Sultanov ◽  
M. D. Nadzafzade
Keyword(s):  
Heat Capacity ◽  
Magnetic Systems ◽  
One Dimensional

Sound attenuation in one-dimensional magnetic systems at finite temperatures

1977 ◽  
Vol 61 (6) ◽  
pp. 415-417 ◽  
Author(s):  
Katsuhiko Nagano ◽  
Hisao Okamoto
Keyword(s):  
Sound Attenuation ◽  
Magnetic Systems ◽  
One Dimensional
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