Zobrazeno 1 - 10
of 152
pro vyhledávání: '"A. V. Val'kov"'
Autor:
V. V. Val’kov
Publikováno v:
JETP Letters. 116:896-901
An approach that makes it possible to correctly derive equations describing the Bose–Einstein condensation and the spectrum of elementary excitations in the ensemble of Hubbard bosons in the strong correlation regime $$(U \gg {\text{|}}{{t}_{{fm}}}
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::16c7a087753b2b77953be02bf524ed9b
https://doi.org/10.1134/s0021364022602664
https://doi.org/10.1134/s0021364022602664
Splitting of the Spectrum of Fermionic Excitations in a Topological Insulator by Charge Fluctuations
Autor:
V. V. Val’kov
Publikováno v:
JETP Letters. 114:751-756
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dcacd71c56f2b39866e949e3e773b838
https://doi.org/10.1134/s0021364021240097
https://doi.org/10.1134/s0021364021240097
Publikováno v:
Physics-Uspekhi. 64:641-670
The review discusses the emergence of the spin-fermion model of cuprates and the formation of the spin-polaron concept of the electronic structure of hole-doped cuprate superconductors. This concept has allowed describing the properties of cuprates i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d3d6df200f04a2da8b8c1fbd2de6d3ad
https://doi.org/10.3367/ufne.2020.08.038829
https://doi.org/10.3367/ufne.2020.08.038829
Publikováno v:
Theoretical Foundations of Chemical Engineering. 55:821-828
The features of distribution are studied and a complex technology for the separation of samarium, europium, and gadolinium is proposed. This technology involves the initial isolation of 70–80% of the europium concentrate by extraction with organoph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f11393ac54b318fcfa4066d5a82ebcc6
https://doi.org/10.1134/s0040579521040175
https://doi.org/10.1134/s0040579521040175
Autor:
V. V. Val’kov
Publikováno v:
JETP Letters. 111:647-652
The effect of the spin-orbit and Coulomb interactions on the symmetry and topological properties of the s, p, d, and s + d phases of an excitonic insulator has been considered by example of the inverted two-band structure of the HgTe quantum well. It
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d169af1787ca4fedd7607ca1f7434ecc
https://doi.org/10.1134/s0021364020110107
https://doi.org/10.1134/s0021364020110107
Publikováno v:
Journal of Experimental and Theoretical Physics. 130:235-246
It is shown that interlayer electron tunneling in the quasi-two-dimensional ensemble of Hubbard fermions leads to the realization of the gapless superconducting phase with the chiral (d + id)-wave order parameter symmetry, not for a single value of s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f98c18c4875e2f57fc7fe018872a191
https://doi.org/10.1134/s1063776120010197
https://doi.org/10.1134/s1063776120010197
Publikováno v:
Journal of Experimental and Theoretical Physics. 129:426-437
The ground-state structure and fermion parity have been determined for a semiconductor nano-wire with a strong Rashba spin–orbit interaction and proximity-induced superconductivity placed in an external magnetic field under periodic boundary condit
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72abb14f6e77980c77aadff5dc8b5916
https://doi.org/10.1134/s1063776119080144
https://doi.org/10.1134/s1063776119080144
Publikováno v:
Journal of Low Temperature Physics. 197:34-43
Taking into account the real crystalline structure of the $$\hbox {CuO}_2$$ plane within the spin-fermion model and using the diagram technique, the spin-polaron concept of the fermionic excitations in cuprate superconductors is implemented. It is sh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::257c97bd0bcbafd210d4574f2197a3ca
https://doi.org/10.1007/s10909-019-02211-9
https://doi.org/10.1007/s10909-019-02211-9
Publikováno v:
JETP Letters. 110:140-153
The problems of occurrence and experimental identification of topologically nontrivial phases in condensed matter have been reviewed. The results of the study of the effect of strong intra- and interatomic Coulomb interaction on a quantum phase trans
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aac3ba8f57945b8b514b44784cb9ef91
https://doi.org/10.1134/s002136401914011x
https://doi.org/10.1134/s002136401914011x
Publikováno v:
Journal of Experimental and Theoretical Physics. 128:885-898
The Fermi excitation spectrum, the problem of Cooper instability, and the Londons magnetic field penetration depth in cuprate superconductors are considered using the unified conception based on accounting for the strong coupling between the spin of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6906aebecc86457ce3361639ad40da70
https://doi.org/10.1134/s1063776119050078
https://doi.org/10.1134/s1063776119050078