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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shi, Xin, Wu, Yong, Wang, Jian Guo, Kimberg V., Zhang, Song Bin
Заглавие : X-ray transient absorption spectroscopy by an ultrashort x-ray-laser pulse in a continuous-wave IR field
Место публикации : Phys. Rev. A. - 2020. - Vol. 101, Is. 2. - Ст.023401. - ISSN 2469-9926, DOI 10.1103/PhysRevA.101.023401. - ISSN 2469-9934(eISSN)
Примечания : Cited References: 56. - Grants from the National Basic Research Program of China (Grant No. 2017YFA0403200), National Natural Science Foundation of China (Grants No. 11604197, No. 11934004, and No. 11974230), the Science Challenge Program of China (Grants No. TZ2018005 and No. TZ2016005), and the Organization Department of CCCPC are acknowledged. V.K. acknowledges financial support from Swedish Research Council within the State Contract of the Ministry of Education and Science of the Russian Federation for Siberian Federal University for Scientific Research in 2017-2019 (Project No. 3.2662.2017)
Предметные рубрики: MOLECULAR NITROGEN
TIME
DYNAMICS
PHASE
SPECTRA
DECAY
Аннотация: X-ray transient absorption spectra (XTAS) of molecules are theoretically investigated in a femtosecond x-ray pump and continuous-wave (cw) infrared (IR)-control scenario. The scheme is exemplified by a CO molecule resonantly pumped into carbon and oxygen core-excited 1s→π∗ states by a weak femtosecond x-ray pulse, while dynamic Stark shifts are induced by the cw IR-control radiation. As a result, significant shoulder structures appear in XTAS showing strong dependence on the phase of IR radiation relative to the envelope of the x-ray pulse. Due to a significant difference in the frequencies of the two pulses, the present XTAS scheme provides much clear interpretation of the dynamic Stark effects as compared to the attosecond UV transient absorption scenario. Within the suggested two-level model, where the total spectrum is decomposed as incoherent superposition of contributions from different vibrational excitations weighted by the Franck-Condon Factors, all spectral structures can be well identified and interpreted in a good agreement with the full-scale molecular simulations. Well-characterized XTAS in the proposed IR-control scheme can be applied for fine phase synchronization between IR and x-ray pulses, highly demanded in modern experiments on x-ray free-electron lasers.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Melnikova S.V., Vasiliev A. D., Voronov V. N., Bovina A. F.
Заглавие : X-ray and optical studies of CsxRb1-xLiSO4 solid solutions
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1995. - Vol. 37, Is. 8. - P.2529-2531. - ISSN 0367-3294
Примечания : Cited References: 6
Предметные рубрики: MIXED-CRYSTALS
PHASE
WOS
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V.
Заглавие : Splitting of the spectrum of fermionic excitations in a topological insulator by charge fluctuations
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-02-00348]
Место публикации : JETP Letters. - 2021. - Vol. 114, Is. 12. - P.751-756. - ISSN 0021-3640, DOI 10.1134/S0021364021240097. - ISSN 1090-6487(eISSN)
Примечания : Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project no. 19-02-00348)
Предметные рубрики: HUBBARD FERMIONS
EDGE STATES
PHASE
SURFACE
Аннотация: It is shown that the intersite Coulomb interaction of electrons in a topological insulator leads to the splitting of the initial energy structure and to the induction of two bands of fluctuation states. As a result, the total spectrum of Fermi excitations of the topological insulator has a four-band structure. The dielectric gap is determined by the energy interval between the bottom of the band of fluctuation states of conduction electrons and the top of the valence band of fluctuation states. Since the band of fluctuation states is narrow, quasiparticles with different effective masses appear.
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Zlotnikov A. O.
Заглавие : Effect of the intersite Coulomb interaction on chiral superconductivity at the noncollinear spin ordering
Коллективы : Russian Foundation for Basic Research; Government of the Krasnoyarsk Territory; Krasnoyarsk Territorial Foundation for Support of Scientific and RD Activities [16-02-00073-a, 16-42-243057-r-mol-a]; Complex Program of the Siberian Branch of the Russian Academy of Sciences II.2P [0358-2015-002]; Grant of the President of the Russian Federation [SP-1370.2015.5]
Место публикации : Phys. Solid State. - 2017. - Vol. 59, Is. 11. - P.2120-2126. - ISSN 1063-7834, DOI 10.1134/S1063783417110300. - ISSN 1090-6460(eISSN)
Примечания : Cited References:18. - This study was supported by the Russian Foundation for Basic Research, Government of the Krasnoyarsk Territory, and Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activities, projects no. 16-02-00073-a and 16-42-243057-r-mol-a and the Complex Program of the Siberian Branch of the Russian Academy of Sciences II.2P, project no. 0358-2015-002. A.O. Zlotnikov is grateful for support of the Grant of the President of the Russian Federation SP-1370.2015.5.
Предметные рубрики: TRIANGULAR LATTICE
MAGNETIC ORDER
COEXISTENCE
PHASE
Аннотация: We investigate the effect of the intersite Coulomb interaction in a planar system with the triangular lattice on the structure of chiral order parameter Δ(p) in the phase of coexisting superconductivity and noncollinear 120° magnetic ordering. It has been established that the Coulomb correlations in this phase initiate the state where the quasi-momentum dependence Δ(p) can be presented as a superposition of the chiral invariants corresponding to the dx2−y2+idxy and px + ipy symmetry types. It is demonstrated that the inclusion of the Coulomb interaction shifts the Δ(p) nodal point positions and, thereby, changes the conditions for a quantum topological transition.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V.
Заглавие : Edge states of an excitonic insulator with the spin-orbit interaction
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-02-00348]
Место публикации : JETP Letters. - 2020. - Vol. 111, Is. 11. - P.647-652. - ISSN 0021-3640, DOI 10.1134/S0021364020110107. - ISSN 1090-6487(eISSN)
Примечания : Cited References: 15. - This work was supported by the Russian Foundation for Basic Research (project no. 19-02-00348)
Предметные рубрики: PHASE
ANOMALIES
Аннотация: The effect of the spin-orbit and Coulomb interactions on the symmetry and topological properties of thes, p, d, ands+dphases of an excitonic insulator has been considered by example of the inverted two-band structure of the HgTe quantum well. It has been found that only thepphase has a nontrivial topology, but it is metastable. It has been shown that the exchange interaction between fermions induces the ground state with thes+dsymmetry of the excitonic order parameter. This phase of the excitonic insulator has zero Chern number; nevertheless, edge states occur in the case of open boundaries.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shaykhutdinov K. A., Balaev D. A., Popkov S. I., Vasilyev A. D., Martyanov O. N., Petrov M. I.
Заглавие : Thermally activated dissipation in a novel foamed Bi-based oxide superconductor in magnetic fields
Место публикации : Supercond. Sci. Technol.: IOP PUBLISHING LTD, 2007. - Vol. 20, Is. 6. - P491-494. - ISSN 0953-2048, DOI 10.1088/0953-2048/20/6/001
Примечания : Cited References: 20
Предметные рубрики: FLUX
BI2SR2CACU2O8+DELTA
MECHANISM
PHASE
FILMS
Ключевые слова (''Своб.индексиров.''): bismuth compounds--josephson junction devices--magnetic field effects--transport properties--resistive transitions--thermally activated dissipation--oxide superconductors
Аннотация: The transport properties of a novel foamed superconductor Bi1.8Pb0.3Sr1.9Ca2Cu3Ox have been studied. As the analysis of resistive transitions in a magnetic field shows, the dissipation follows a thermally activated flux creep model with the temperature- independent pinning potential in S-N-S-type Josephson junctions.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gorev M. V., Flerov I. N., Sciau P., Guillemet-Fritsch S.
Заглавие : Thermal expansion of (Ba1-x La (x) )Ti1-x/4O3 solid solutions
Коллективы : Russian Foundation for Basic Research [07-02-00069]; Russian Federation [NSh-1011.2008.2]
Разночтения заглавия :авие SCOPUS: Thermal expansion of (Ba1 - X la x )Ti 1 - X/4O3 solid solutions
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2009. - Vol. 51, Is. 4. - P790-796. - ISSN 1063-7834, DOI 10.1134/S106378340904026X
Примечания : Cited References: 22. - This work was supported by the Russian Foundation for Basic Research (project no. 07-02-00069) and the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools of the Russian Federation (grant NSh-1011.2008.2).
Предметные рубрики: CERAMICS
BATIO3
BA(TI1-XZRX)O-3
FERROELECTRICS
CONDUCTIVITY
BEHAVIOR
SYSTEM
PHASE
HEAT
Аннотация: Deformation and the thermal expansion coefficient of ceramic samples of (Ba1 - x La (x) )Ti1 - x/4O3 solid solutions (x = 0, 0.026, 0.036, 0.054) were studied in the temperature range 120-700 K. Based on an analysis of the data obtained, the temperature-composition phase diagram is refined, and the temperature dependence of the polarization is calculated. The results are discussed in combination with the dielectric measurement data.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Gorev M. V., Flerov I. N., Bondarev V. S., Maglione M., Simon A.
Заглавие : Thermal expansion and permittivity of (Ba1-xBi2x/3)TiO3 solid solutions
Разночтения заглавия :авие SCOPUS: Thermal expansion and permittivity of (Ba 1 - xBi 2x/3)TiO 3 solid solutions
Место публикации : Phys. Solid State: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2011. - Vol. 53, Is. 10. - P2073-2079. - ISSN 1063-7834, DOI 10.1134/S1063783411100143
Примечания : Cited References: 24. - This study was supported by the Council on Grants from the President of the Russian Federation for the Support of Leading Scientific Schools (grant NSh-4645.2010.2).
Предметные рубрики: BARIUM-TITANATE
CERAMICS
BATIO3
BEHAVIOR
PHASE
FERROELECTRICS
Аннотация: The strain, the thermal expansion coefficient, and the permittivity of ceramic samples of (Ba1 - x Bi-2x/3)TiO3 solid solutions with x = 0, 0.01, 0.03, and 0.05 have been studied in the temperature range 120-700 K. Based on an analysis of the results, the temperature-composition phase diagram has been refined, and the temperature dependence of the polarization has been calculated.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aplesnin S. S., Bandurina O. N., Romanova O. B., Ryabinkina L. I., Balaev A. D., Eremin E. V.
Заглавие : The interrelation of magnetic and dielectric properties of CoxMn1-xS solid solutions
Коллективы :
Место публикации : J. Phys.: Condens. Matter. - 2010. - Vol. 22, Is. 22. - Ст.226006. - ISSN 0953-8984, DOI 10.1088/0953-8984/22/22/226006
Примечания : Cited References: 20. - This work was supported by the Russian Foundation for Basic Research project nos. 08-02-00364-a, 08-02-90031, F08-037, F08-229 and 09-02-00554-a.
Предметные рубрики: POLARIZATION
TRANSITION
PHASE
Аннотация: Magnetization of the cation-substituted CoxMn1-xS sulfides upon cooling in zero and 100 Oe magnetic fields at the temperatures 4-300 K has been measured. Permittivity of these materials at frequencies from 1 to 100 kHz in magnetic and dc electric fields in the 100-300 K temperature range has been determined. Change in the dielectric permittivity under an external magnetic field is found to have a maximum in the temperature ranges of T-1 similar to (110-120 K) and T-2 similar to (230-250 K). Formation of spontaneous magnetic moment and the rise of magnetic susceptibility are revealed at the same temperatures in the CoxMn1-xS solid solutions. Features of the magnetoelectric properties of the sulfides have been explained by orbital ordering.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Patrin G. S., Shiyan Ya. G., Patrin K. G., Yurkin G. Yu.
Заглавие : Synthesis and magnetic properties of [(CoP)soft/NiP/(CoP)hard/NiP]n films
Место публикации : J. Low Temp. Phys.: Springer, 2016. - Vol. 182, Is. 3-4. - P.73-81. - ISSN 00222291 (ISSN), DOI 10.1007/s10909-015-1363-1
Примечания : Cited References: 25. - This study was supported by the Ministry of Education and Science of the Russian Federation for the Siberian Federal University, state Order No. 3.2534.2014/K and the Russian Foundation for Basic Research, Project No. 14-02-00238-a.
Предметные рубрики: Exchange
Phase
Model
Ключевые слова (''Своб.индексиров.''): interlayer coupling--magnetic heterostructure--hysteresis loop--interlayer coupling--magnetic spring
Аннотация: Magnetic interactions in Co–Ni–P multilayers consisting of alternating magnetically soft and magnetically hard layers are experimentally investigated. The variation in the shape of magnetization loops at the conjugation of magnetically soft and magnetically hard layers and the saturation field oscillations with varying number of layer pairs are established. It is demonstrated that insertion of a nonmagnetic spacer significantly affects the magnetization reversal in the structure. It is concluded that in studying the interlayer coupling it is necessary to take into account the biquadratic interaction.
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