Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Yu D Panov"'
Autor:
Yu. D. Panov, A. S. Moskvin
We introduce a minimal model to describe the charge degree of freedom in cuprates with the on-site Hilbert space reduced to only the three valence states CuO$_4^{7-,6-,5-}$ (nominally Cu$^{1+,2+,3+}$) and make use of the S=1 pseudospin formalism. The
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48d1520667abe085e7799110ffa2f3f2
http://arxiv.org/abs/2301.11951
http://arxiv.org/abs/2301.11951
Autor:
A. V. Shadrin, Yu. D. Panov
We consider the effects of the magnetic field on the frustrated phase states of the dilute Ising chain, especially, the behavior of the magnetic entropy change and the isentropic dependence of the temperature on the magnetic field, which are the key
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11540f0414afb31510b40c8c11072a34
http://arxiv.org/abs/2301.11794
http://arxiv.org/abs/2301.11794
Autor:
Yu. D. Panov, A. S. Moskvin
Publikováno v:
Physics of the Solid State. 62:1554-1561
The pseudogap phase of HTSC cuprates is associated with the formation of a system of quantum electron–hole (EH) dimers similar to the Anderson RVB phase. A specific role of the electron–lattice relaxation in the formation of metastable EH dimers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3a3feb284c4c834948709472774a839
https://doi.org/10.1134/s1063783420090206
https://doi.org/10.1134/s1063783420090206
Publikováno v:
IEEE Trans Magn
IEEE Transactions on Magnetics
IEEE Transactions on Magnetics
We report on classical Monte Carlo study of phase transitions and critical behavior of a 2D spin-pseudospin model describing a dilute magnet with competing charge and spin interactions. The static critical exponents of the specific heat and correlati
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b500a0741e943c0a0f4d0000d5f36704
https://hdl.handle.net/10995/112216
https://hdl.handle.net/10995/112216
Autor:
A S Moskvin, Yu D Panov
Publikováno v:
Journal of Physics: Conference Series
We develop a minimal non-BCS model for the CuO$_2$ planes with the on-site Hilbert space reduced to only three effective valence centers CuO$_4$ with different charge, conventional spin, and orbital symmetry, combined in a charge triplet. Using the S
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::db1dccd7f4c3bf57fb5a72cd29f98cc1
http://arxiv.org/abs/2111.01653
http://arxiv.org/abs/2111.01653
Publikováno v:
Physics of the Solid State
The classical Monte Carlo method is used to study the properties of the ground state and phase transitions of the spin-pseudospin model, which describes a two-dimensional Ising magnet with competing charge and spin interactions. This competition lead
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3dd42c1fd4ce2762bb9747ccdcd344f7
http://arxiv.org/abs/2109.10644
http://arxiv.org/abs/2109.10644
Publikováno v:
Physics of the Solid State. 61:1627-1633
We have treated a two-dimensional spin-pseudospin model, which generalizes a diluted antiferromagnetic Ising model with charged nonmagnetic impurities in the case of two types of charges. The analytical results in the Bethe approximation are compared
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::955650a972e66c7dbbf65d98e93a36ab
https://doi.org/10.1134/s106378341909021x
https://doi.org/10.1134/s106378341909021x
Publikováno v:
Physics of the Solid State. 61:707-713
The competition between the magnetic and charge orderings in a model cuprate is considered in terms of a simplified static 2D spin-pseudospin model. This model is equivalent to the 2D dilute antiferromagnetic (AFM) Ising model with charged impurities
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::09dee5f907f3de61099371ee7e3b48dd
https://doi.org/10.1134/s106378341905024x
https://doi.org/10.1134/s106378341905024x
Publikováno v:
Journal of Low Temperature Physics. 196:226-233
We make use of the S=1 pseudospin formalism to describe the charge degree of freedom in a model high-$T_c$ cuprate with the on-site Hilbert space reduced to the three effective valence centers, nominally Cu$^{1+,\,2+,\,3+}$. Starting with a parent cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7153bd8623ebcdb16546704157e169dd
https://doi.org/10.1007/s10909-019-02151-4
https://doi.org/10.1007/s10909-019-02151-4
Publikováno v:
Phys. Solid State
Physics of the Solid State
Physics of the Solid State
The properties of a dilute Ising magnet are studied using a two-dimensional spin-pseudospin model with charged impurities and a frustration caused by the competition of the charge and magnetic orderings. Based on the classical Monte Carlo method, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ceeb38e7101332c8b38557684660bf3f