Journal of Experimental and Theoretical Physics

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Theoretical Analysis of the EPR Spectrum Saturation Effect with Account for Spectral Diffusion in a System with a Gaussian Distribution of Spin Resonance Frequencies
Journal of Experimental and Theoretical Physics - Tập 128 - Trang 684-699 - 2019
K. M. Salikhov, I. T. Khairuzhdinov
We have analyzed the effect of saturation of the EPR spectrum for the model situation when a set of resonance frequencies of spin packets is described by a Gaussian distribution and spectral diffusion, which is a random process without correlation, exists. We have obtained the form of the spectrum for arbitrary values of magnetic–resonant parameters: relaxation times for the longitudinal and trans... hiện toàn bộ
Laser Isotope-Selective IR Dissociation of Molecules with a Small Isotopic Shift in Absorption Spectra in Nonequilibrium Thermodynamic Shock Conditions
Journal of Experimental and Theoretical Physics - Tập 132 - Trang 233-246 - 2021
G. N. Makarov, A. N. Petin
We report on the results of investigation of laser isotope-selective IR dissociation of molecules (CF3Br and CF2HCl as examples) characterized by a small (less than 0.25 cm–1) isotopic shift in the IR absorption spectra in nonequilibrium thermodynamic conditions of a compression shock (shock wave) formed in front of the solid surface under the action of an intense incident pulsed gasdynamically co... hiện toàn bộ
Quantum states and Fermi surfaces in metals with an fcc lattice in an ultrastrong magnetic field
Journal of Experimental and Theoretical Physics - Tập 93 - Trang 168-179 - 2001
V. Ya. Demikhovskii, D. V. Khomitsky
The expression for the electron wave function for a 3D crystal in a constant magnetic field is obtained in the strong coupling approximation. A 3D Harper-type equation describing the electron spectrum in magnetic 3D subbands is derived. The Fermi surfaces for monovalent noble metals are constructed for various orientations and magnitudes of magnetic fields corresponding to a rational number p/q of... hiện toàn bộ
Spin-flip induction of Fano resonance upon electron tunneling through atomic-scale spin structures
Journal of Experimental and Theoretical Physics - Tập 116 Số 5 - Trang 854-859 - 2013
В. В. Вальков, S. V. Aksenov, E. A. Ulanov
Electromagnetic-field amplification in finite one-dimensional photonic crystals
Journal of Experimental and Theoretical Physics - Tập 123 - Trang 373-381 - 2016
V. S. Gorelik, V. V. Kapaev
The electromagnetic-field distribution in a finite one-dimensional photonic crystal is studied using the numerical solution of Maxwell’s equations by the transfer-matrix method. The dependence of the transmission coefficient T on the period d (or the wavelength λ) has the characteristic form with M–1 (M is the number of periods in the structure) maxima with T = 1 in the allowed band of an infinite... hiện toàn bộ
Ground-State Structures of the Ising Model on a Layered Triangular Lattice in a Magnetic Field
Journal of Experimental and Theoretical Physics - Tập 134 - Trang 644-649 - 2022
M. K. Badiev, A. K. Murtazaev, M. K. Ramazanov, M. A. Magomedov
The magnetic structures of the ground state, as well as magnetic and thermodynamic properties of the antiferromagnetic Ising model on a layered lattice, are investigated based on the replica-exchange Monte Carlo algorithm with account for the exchange interactions of the next-to-nearest neighbors. The magnetic structures of the ground state in an external magnetic field interval 0 ≤ h ≤ 16 are obt... hiện toàn bộ
Universality in the partially anisotropic three-dimensional Ising lattice
Journal of Experimental and Theoretical Physics - Tập 99 - Trang 539-543 - 2004
M. A. Yurishchev
Using transfer-matrix extended phenomenological renormalization-group methods, we study the critical properties of the spin-1/2 Ising model on a simple-cubic lattice with partly anisotropic coupling strengths $$\mathop J\limits^ \to = (J',J',J)$$ . The universality of both fundamental critical exponents y t and y h is confirmed. It is shown that the critical finite-size scaling amplitude ratios $$... hiện toàn bộ
Shear viscosity of glass-forming melts in the liquid-glass transition region
Journal of Experimental and Theoretical Physics - Tập 110 - Trang 675-688 - 2010
D. S. Sanditov
A new approach to interpreting the hole-activation model of a viscous flow of glass-forming liquids is proposed. This model underlies the development of the concept on the exponential temperature dependence of the free energy of activation of a flow within the range of the liquid-glass transition in complete agreement with available experimental data. The “formation of a fluctuation hole” in high-... hiện toàn bộ
Low-Dimensional Magnetism in Namibite Cu(BiO)2VO4OH
Journal of Experimental and Theoretical Physics - Tập 137 - Trang 520-525 - 2023
L. V. Shvanskaya, T. D. Bushneva, A. G. Ivanova, Z. V. Pchelkina, T. M. Vasil’chikova, O. S. Volokova, A. N. Vasil’ev
A synthetic analog of rare secondary mineral namibite Cu(BiO)2VO4OH has been obtained by the hydrothermal method. The crystal structure of this compound contains isolated uniform chains of vertex-connected copper–oxygen octahedra. Magnetic susceptibility (χ) and magnetization (M) measurements have not indicated the long-range order in the temperature interval 2–300 K. Specific heat (Cp) measuremen... hiện toàn bộ
Nonstationary Spatial Energy Distribution of a Cascade of Knock-out Atoms in a Solid
Journal of Experimental and Theoretical Physics - - 2019
E. V. Metelkin, В. А. Акатьев, Viktor I. Shmyrev, E. Yu. Barysheva
Tổng số: 4,317   
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