Zobrazeno 1 - 10
of 15
pro vyhledávání: '"S. Yu. Shashkin"'
Publikováno v:
Journal of Physics: Condensed Matter. 12:1199-1207
Within the framework of the pair potential approximation and the shell model including the Jahn-Teller contribution to the crystal energy we have studied the elastic properties of La2 CuO4 . The strong anisotropic correlation between the lattice defo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4750db188063dcaee6f315dc2c1108a7
https://doi.org/10.1088/0953-8984/12/7/305
https://doi.org/10.1088/0953-8984/12/7/305
Publikováno v:
Russian Physics Journal. 42:528-532
The relative intensities of vibronic splitting components of the3A2g→1T2g optical electronic dipole transition induced by odd local vibrations and spin-orbit interaction are calculated for an impurity center with O h point-group symmetry. The polar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::204cf531513966068a77c4d1b0e80962
https://doi.org/10.1007/bf02508268
https://doi.org/10.1007/bf02508268
Autor:
A. Yu. Zakharov, A. D. Gorlov, A. I. Rokeakh, S. Yu. Shashkin, V. B. Guseva, V. A. Chernyshev, A. E. Nikiforov
Publikováno v:
Physics of the Solid State. 40:1969-1974
A computer simulation of lattice distortions around an impurity ion Eu2+ in MeF2 fluorites (Me=Ca, Sr, Ba) is reported. ENDOR data on displacements of F− ions distant from an impurity center were used to determine the parameters of the Eu2+-F− sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0e40b70095aa08061c743fe9928cd782
https://doi.org/10.1134/1.1130696
https://doi.org/10.1134/1.1130696
Autor:
A. D. Gorlov, V. A. Chernyshev, A. Yu. Zaharov, S. Yu. Shashkin, A. A. Mekhonoshin, A. I. Rokeakh, A. E. Nikiforov
Publikováno v:
Applied Magnetic Resonance. 14:37-49
A computer controlled ENDOR spectrometer and special software are used to determine the coordinates of19F nuclei in four anionic spheres of cubic MeF2:Gd3+ (Me = Ca, Sr, Ba, Pb) centers. The computer simulation of Gd3+ cubic impurity center in crysta
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::18e7bd1696d8714e091fce2277def0b9
https://doi.org/10.1007/bf03162005
https://doi.org/10.1007/bf03162005
Publikováno v:
Solid State Communications. 104:499-504
The effect of hydrostatic pressure on structural and magnetic characteristics of the two-dimensional ferromagnetic K 2 CuF 4 is studied using a pair interaction model for the crystal energy. Multi-body Jahn-Teller (JT) contributions to the energy are
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::776242c970797f1b598ea4d53d26ed01
https://doi.org/10.1016/s0038-1098(97)00372-4
https://doi.org/10.1016/s0038-1098(97)00372-4
Autor:
A. E. Nikiforov, S. Yu. Shashkin
Publikováno v:
Physics of the Solid State. 39:981-986
Calculations of the properties of NiO, CaO, SrO, and La2NiO4 crystals are used as a basis for determining empirical pairwise potentials which are employed in calculating the structure, lattice dynamics, and certain properties of La2CuO4. The model de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db9b8f5cb122aba802505519c0152214
https://doi.org/10.1134/1.1129769
https://doi.org/10.1134/1.1129769
Publikováno v:
Zeitschrift für Physikalische Chemie. 201:323-331
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4aa5be666065dc433914899f3ac30366
https://doi.org/10.1524/zpch.1997.201.part_1_2.323
https://doi.org/10.1524/zpch.1997.201.part_1_2.323
Publikováno v:
Physica B: Condensed Matter. :772-773
A model of the low-temperature orthorombic phase (O′) of LaMnO 3 was constructed using pair potentials with explicitly allowing for the many-body Jahn–Teller contribution to the crystal energy. The analysis of the structure, elastic constants and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9d2aab3e33d3729d294b08cf424fd67a
https://doi.org/10.1016/s0921-4526(99)01661-0
https://doi.org/10.1016/s0921-4526(99)01661-0
Publikováno v:
physica status solidi (b). 97:475-479
A method is proposed for the calculation of the Jahn-Teller coupling constants for orbitally degenerated states of ions in crystals based on the application of perturbation theory in adiabatic potential matrix calculation. The cluster approximation a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cfa6630454f347408cd4126f0a687571
https://doi.org/10.1002/pssb.2220970212
https://doi.org/10.1002/pssb.2220970212
Publikováno v:
physica status solidi (b). 118:419-426
Two mechanisms of Cu2+ orbital ordering in KCuF3 and K2CuF4 are considered: the Jahn-Teller and the exchange mechanisms with account of the crystal elastic energy. The Jahn-Teller coupling constants and exchange parameters necessary for the evaluatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16acfc62ed716b082860855c8f78c639
https://doi.org/10.1002/pssb.2221180149
https://doi.org/10.1002/pssb.2221180149