


Vol 120, No 7-8 (2024)
Articles
Al'ternativnaya ideya ob istochnike barionnoy asimmetrii vo Vselennoy
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Uskorenie elektronov pri vozdeystvii teravattnogo femtosekundnogo lazernogo izlucheniya na klastery azota
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Osobennosti struktury iskrovykh kanalov v prikatodnoy zone
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Fotovol'taicheskiy effekt Kholla v dvumernykh fluktuiruyushchikh sverkhprovodnikakh
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Geometricheskaya faza kak osnova kvantovoy akselerometrii
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Sinkhronnoe detektirovanie nelineynykh yavleniy v optoakusticheskikh ostsillyatsiyakh nanoplenki, initsiirovannykh femtosekundnym lazernym impul'som
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Ramseevskaya spektroskopiya rezonansov KPN na D1 linii atomov shchelochnykh metallov v miniatyurnykh yacheykakh v pole vstrechnykh voln s protivopolozhnymi krugovymi polyarizatsiyami
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Osobennosti rezonansnogo kombinatsionnogo rasseyaniya sveta v ul'tratverdom amorfnom uglerode
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Universal'nye impul'snye raspredeleniya i korotkodeystvuyushchie korrelyatsii nuklonov
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Nablyudenie rezonansnoy radiatsionno-stolknovitel'noy peredachi kolebatel'noy energii v molekulakh pri lazernom IK mnogofotonnom vozbuzhdenii v dvukhkomponentnoy srede
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Kvantovye effekty pri spin-flop perekhode v topologicheskom antiferromagnitnom izolyatore MnBi2Te4
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Strukturnoe raznoobrazie i fazovye perekhody v boratakh so smeshannoy valentnost'yu Mg2-xMn1+xBO5 (0.0 < x ≤ 0.4)
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Svyazannye sostoyaniya magnitnykh skirmionov vysokogo poryadka i sverkhprovodyashchego vikhrya Pirla
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Coulomb correlations and the electronic structure of bulk V2Te2O
Abstract
The effect of Coulomb correlations on the electronic structure of bulk van der Waals material V2Te2O is studied by the charge self-consistent density functional theory and dynamical mean-field theory method. Our results show a significant correlation-induced renormalization of the spectral functions in the vicinity of the Fermi energy which is not accompanied by a transfer of the spectral weight to Hubbard bands. The computed quasiparticle effective mass enhancement m*/m for the V 3d states varies from 1.31 to 3.32 indicating an orbital-dependent nature of correlation effects and suggests an orbital-selective formation of local moments in the V 3d shell. We demonstrate that taking into account of Coulomb interaction between the V 3d electrons yields the electronic specific heat coefficient γ= 26.94mJK-2 mol-1 in reasonable agreement with the experiment. We show that the strength of Coulomb correlations is sufficient to trigger a band shift along the Z − Г − X path of the Brillouin zone leading to a collapse of the electronic Fermi surface pocket centered on the Г − Z direction predicted by density functional theory.



Rekonstruktsiya dvumernykh turbulentnykh techeniy i ikh parametrov s pomoshch'yu fizicheski-informirovannykh neyronnykh setey
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Ogranichenie na otnositel'nuyu veroyatnost' raspada K+ → π0π0π0e+ν
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Kriticheskaya temperatura i parametr poryadka v sverkhprovodyashchikh geterostrukturakh s uchetom nenulevoy konstanty svyazi v polidomennom ferromagnetike
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Generatsiya vtoroy garmoniki, soprovozhdaemaya formirovaniem vysokointensivnykh svetovykh pul'
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Spektry propuskaniya infrakrasnogo izlucheniya v TiS3: kray fundamental'nogo pogloshcheniya, fonony i eksitony
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Matritsa korrelyatsiy gradientov fazy svetovoy volny kak sposob izmereniya osnovnykh parametrov turbulentnosti
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Neravnovesnyy nagrev elektronov, plavlenie i modifikatsiya nanoplenki nikelya ul'trakorotkim impul'som teragertsovogo izlucheniya
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Vliyanie anizotropii na issledovanie kriticheskogo povedeniya spinovykh modeley metodami mashinnogo obucheniya
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Lyapunov exponents in fundamental models of nonlinear resonance
Abstract
The problem of analytical estimation of the Lyapunov exponents and Lyapunov timescales of the motion in multiplets of interacting nonlinear resonances is considered. To this end, we elaborate a unified framework, based on the separatrix map theory, which incorporates both an earlier approach for the first fundamental model of perturbed resonance (given by the perturbed pendulum Hamiltonian) and a new one for its second fundamental model (given by the perturbed Andoyer Hamiltonian). Within this framework, new accurate estimates for the Lyapunov timescales of the inner and outer subsystems of the Solar planetary system are presented and discussed.



Popravka
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