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Diagram Approach to the Problem of the Normal Phase Properties of the Spin-Polaron Ensemble in Cuprate Superconductors / V. V. Val'kov [et al.] // J. Low Temp. Phys. - 2019. - Vol. 197, Is. 1-2. - P. 34-43, DOI 10.1007/s10909-019-02211-9. - Cited References: 29. - The work was supported by the program of the Presidium of the Russian Academy of Sciences No. 12 “Fundamental problems of high-temperature superconductivity,” the Russian Foundation for Basic Research (RFBR) (Projects Nos. 18-02-00837 and 19-02-00509) and partly by the Government of Krasnoyarsk Region and the Krasnoyarsk Region Science and Technology Support Fund (Projects Nos. 18-42-243002 “Manifestation of spin-nematic correlations in spectral characteristics of electronic structure and their influence on practical properties of cuprate superconductors,” 18-42-243018 “Contact phenomena and magnetic disorder in the problem of the formation and detection of topological edge states in semiconductor nanostructures,” and 18-42-240014 “Single-orbit effective model of an ensemble of spin-polaron quasiparticles in the problem of describing the intermediate state and pseudogap behavior of cuprate superconductors”). . - ISSN 0022-2291
Кл.слова (ненормированные):
Cuprate superconductors -- Unconventional superconductivity -- Spin-charge correlations
Аннотация: Taking into account the real crystalline structure of the 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 shown that an account of the on-site scattering processes leads to considerable binding energy of the spin-polaron quasiparticles. An account of the two-site spin-fermion scattering processes results in the energy spectrum and spectral properties of the spin-polaron quasiparticles which agree well with experimental data on cuprate superconductors.

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Держатели документа:
Kirensky Institute of Physics, Federal Research Center KSC SB RAS, Krasnoyarsk, 660036, Russian Federation
Siberian State University of Science and Technology, Krasnoyarsk, 660037, Russian Federation
Vereshchagin Institute for High Pressure Physics, Troitsk, Moscow, 108840, Russian Federation

Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович; Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Barabanov, A. F.
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Effect of long-range interactions on the Kohn-Luttinger mechanism of the cooper instability in the Shubin-Vonsowsky model / M. Yu. Kagan [et al.] // JETP letters. - 2013. - Vol. 97, Is. 4. - P. 226-232DOI 10.1134/S0021364013040085
Аннотация: The problem of Cooper instability is studied by implementing the Kohn–Luttinger mechanism in the frame-work of the Shubin–Vonsowsky model taking into account the intersite Coulomb interactions within the first and second coordination spheres. It is shown that the Kohn–Luttinger renormalization for the effective interaction in the second order terms of perturbation theory, as well as the inclusion of intersite hoppings in the second and third coordination spheres, significantly affects the interplay between the superconducting phases with dxy-, p-, s-, and dx2-y2 -wave symmetries of the order parameter.

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Публикация на русском языке Влияние дальних взаимодействий на механизм куперовской неустойчивости Кона-Латтинжера в модели Шубина-Вонсовского. - [S. l. : s. n.]

Держатели документа:
Russian Acad Sci, Kapitza Inst Phys Problems, Moscow 119334, Russia
Russian Acad Sci, Siberian Branch, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia

Доп.точки доступа:
Kagan, M.Yu.; Val'kov, V. V.; Вальков, Валерий Владимирович; Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович
}
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Hierarchy of low-energy models of the electronic structure of cuprate HTSCs: The role of long-range spin-correlated hops / V. V. Val'kov [et al.] // Low Temp. Phys. - 2018. - Vol. 44, Is. 2. - P. 130-138, DOI 10.1063/1.5020908. - Cited References: 42. - This study was conducted with financial support from the Russian fund for fundamental science, Government of the Krasnoyarsk region, Krasnoyarsk regional fund for scientific and technical activity in the framework of Project No. 16-42-240435 as well as the complex program SO RAN No. P.2.P (Project No. 0356-2015-0405). The work of A. F. Barabanov is supported by RFFI (Grant No. 16-02-00304). . - ISSN 1063-777X. - ISSN 1090-6517

РУБ Physics, Applied
Рубрики:
HIGH-TC SUPERCONDUCTORS
SINGLE-BAND MODELS
OXIDE SUPERCONDUCTORS
Аннотация: It is shown that for the three-band Emery p–d-model that reflects the real structure of the CuO2-plane of high-temperature superconductors in the regime of strong electron correlations, it is possible to carry out a sequence of reductions to the effective models reproducing low-energy features of elementary excitation spectrum and revealing the spin-polaron nature of the Fermi quasiparticles. The first reduction leads to the spin-fermion model in which the subsystem of spin moments, coupled by the exchange interaction and localized on copper ions, strongly interacts with oxygen holes. The second reduction deals with the transformation from the spin-fermion model to the φ–d-exchange model. An important feature of this transformation is the large energy of the φ–d-exchange coupling, which leads to the formation of spin polarons. The use of this fact allows us to carry out the third reduction, resulting in the t̃ −J̃∗−I-model. Its distinctive feature is the importance of spin-correlated hops as compared to the role of such processes in the commonly used t–J*-model derived from the Hubbard model. Based on the comparative analysis of the spectrum of Fermi excitations calculated for the obtained effective models of the CuO2-plane of high-temperature superconductors, the important role of the usually ignored long-range spin-correlated hops is determined.

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Публикация на русском языке Иерархия низкоэнергетических моделей электронного строения купратных ВТСП: роль дальних спин-коррелированных перескоков [Текст] : статья / В. В. Вальков [и др.] // Физ. низк. температур. - 2018. - Т. 44 № 2. - С. 173-184

Держатели документа:
Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
Siberian State Aerosp Univ, Krasnoyarsk 660037, Russia.
Inst High Pressure Phys, Troitsk 142190, Russia.

Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Mitskan, V. A.; Мицкан, Виталий Александрович; Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Barabanov, A. F.; Russian fund for fundamental science, Government of the Krasnoyarsk region, Krasnoyarsk regional fund for scientific and technical activity [16-42-240435]; complex program SO RAN [P.2.P, 0356-2015-0405]; RFFI [16-02-00304]
}
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Kagan, M. Y.
Anomalous superconductivity and superfluidity in repulsive fermion systems / M. Y. Kagan, V. A. Mitskan, M. M. Korovushkin // Phys. Usp. - 2015. - Vol. 58, Is. 8. - P. 733-761, DOI 10.3367/UFNe.0185.201508a.0785. - Cited References: 369. - We are grateful to M A Baranov, A V Chubukov, D V Efremov, M V Feigel'man, V V Kabanov, K I Kugel', M S Marienko, N M Plakida, N V Prokorev, A Ya Tzalenchuk, and V V Val'kov for the fruitful discussions and constant attention to our work. The work was supported by the Russian Foundation for Basic Research (project nos. 14-02-00058 and 14-02-31237). M Yu K thanks the Program of Basic Research of the National Research University Higher School of Economics for support. The work of MM K was supported by grant of the President of the Russian Federation (SP-1361.2015.1) and the Dinasty Foundation . - ISSN 1063-7869

РУБ Physics, Multidisciplinary
Рубрики:
HEXAGONAL BORON-NITRIDE
   SCANNING-TUNNELING-MICROSCOPY
   2-DIMENSIONAL HUBBARD-MODEL
   HIGH-TC SUPERCONDUCTIVITY
   ELECTRON-ENERGY SPECTRUM
   P-WAVE SUPERCONDUCTIVITY
   DOUBLE-LAYER GRAPHENE
   2D KONDO-LATTICE
   GROUND-STATE
   TRANSITION-TEMPERATURE
Кл.слова (ненормированные):
anomalous superconductivity -- Kohn-Luttinger mechanism -- superfluidity -- repulsive Fermi gas -- Hubbard and t-Jmodel -- Shubin Vonsovsky model -- graphene monolayer -- graphene bilayer
Аннотация: We discuss the mechanisms of unconventional superconductivity and superfluidity in 3D and 2D fermionic systems with purely repulsive interaction at low densities. We construct phase diagrams of these systems and find the areas of the superconducting state in free space, as well as on the lattice in the framework of the Fermi-gas model with hard-core repulsion, the Hubbard model, the Shubin-Vonsovsky model, and the t-J model. We demonstrate that the critical superconducting temperature can be greatly increased in the spin-polarized case or in a two-band situation already at low densities. The proposed theory is based on the Kohn-Luttinger mechanism or its generalizations and explains or predicts anomalous p-, d-, and f-wave pairing in various materials, such as high-temperature superconductors, the idealized monolayer and bilayer of doped graphene, heavy-fermion systems, layered organic superconductors, superfluid 3He, spin-polarized 3He mixtures in 4He, ultracold quantum gases in magnetic traps, and optical lattices.

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Публикация на русском языке Каган, Максим Юрьевич. Аномальная сверхпроводимость и сверхтекучесть в фермионных системах с отталкиванием [Текст] / М. Ю. Каган, В. А. Мицкан, М. М. Коровушкин // Успехи физ. наук : ред. журн. "Успехи физ. наук", 2015. - Т. 185 № 8. - С. 785-815

Держатели документа:
Kapitza Institute for Physical Problems, Russian Academy of Sciences, ul. Kosygina 2, Moscow, Russian Federation
National Research University, Higher School of Economics, ul. Myasnitskaya 20, Moscow, Russian Federation
Kirensky Institute of Physics, Siberian Branch of the Russian Academy of Sciences, Akademgorodok 50, str. 38, Krasnoyarsk, Russian Federation
Reshetnev Siberian State Aerospace University, prosp. Gazety Krasnoyarskii rabochii 31, Krasnoyarsk, Russian Federation

Доп.точки доступа:
Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович
}
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Kagan, M. Y.
High-Tc and Low-Tc superconductivity in electron systems with repulsion / M. Y. Kagan, V. A. Mitskan, M. M. Korovushkin // J. Supercond. Nov. Magn. - 2016. - Vol. 29, Is. 4. - P. 1043-1048, DOI 10.1007/s10948-016-3384-7. - Cited References:31. - The authors are grateful to V. V. Val'kov, I. S. Burmistrov, M. V. Feigel'man, and A. Ya. Tzalenchuk for valuable remarks. This work is supported by the Russian Foundation for Basic Research (nos. 14-02-00058 and 14-02-31237). One of the authors (M. Yu. K.) gratefully acknowledges support from the Basic Research Program of the National Research University Higher School of Economics. Another one (M. M. K.) thanks the scholarship SP-1361.2015.1 of the President of Russia and the Dynasty foundation. . - ISSN 1557-1939. - ISSN 1557-1947

РУБ Physics, Applied + Physics, Condensed Matter
Рубрики:
Fermion systems
   Doped graphene
   Hubbard-model
   Phase-diagram
   Superfluidity
   Density
Кл.слова (ненормированные):
Unconventional superconductivity -- Kohn-Luttinger mechanism -- Graphene
Аннотация: We demonstrate the instability of the normal state of purely repulsive fermionic systems towards the transition to the Kohn-Luttinger superconducting state. We construct the superconducting phase diagrams of these systems in the framework of the Hubbard and Shubin-Vonsovsky models on the square and hexagonal lattices. We show that an account for the long-range Coulomb interactions, as well as the Kohn- Luttinger renormalizations, lead to an increase in the critical superconducting temperatures in various materials, such as high-temperature superconductors, idealized monolayer, and bilayer of doped graphene. Additionally, we discuss the role of the structural disorder and the nonmagnetic impurities in superconducting properties of real graphene systems.

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Держатели документа:
PL Kapitsa Phys Problems Inst, Moscow 119334, Russia.
Natl Res Univ, Higher Sch Econ, Moscow 109028, Russia.
SB RAS, LV Kirensky Phys Inst, Krasnoyarsk 660036, Russia.
Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.
KTH Royal Inst Technol, NORDITA, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.
Stockholm Univ, Roslagstullsbacken 23, SE-10691 Stockholm, Sweden.

Доп.точки доступа:
Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович; Russian Foundation for Basic Research [14-02-00058, 14-02-31237]; Basic Research Program of the National Research University Higher School of Economics; Dynasty foundation; [SP-1361.2015.1]
}
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Kagan, M. Y.
Kohn-Luttinger superconductivity in monolayer and bilayer semimetals with the Dirac spectrum / M. Y. Kagan, V. A. Mitskan, M. M. Korovushkin // J. Exp. Theor. Phys. - 2014. - Vol. 119, Is. 6. - P. 1140-1149, DOI 10.1134/S1063776114120048. - Cited References:70. - This work was performed under the Program of the RAS Division ofPhysical Sciences (project no. II.3.1) and was supported financially bythe Russian Foundation for Basic Research (project nos. 14-02-00058 and14-02-31237) and by the President of the Russian Federation (grant no.MK-526.2013.2). One of the authors (M.M.K.) thanks the "Dynasty"foundation for financial support. . - ISSN 1063. - ISSN 1090-6509. -

РУБ Physics, Multidisciplinary
Рубрики:
FERMI-SURFACE
   REPULSIVE INTERACTIONS
   DOPED GRAPHENE
   HUBBARD-MODEL
Аннотация: The effect of Coulomb interaction in an ensemble of Dirac fermions on the formation of superconducting pairing in monolayer and bilayer doped graphene is studied using the Kohn-Luttinger mechanism disregarding the Van der Waals potential of the substrate and impurities. The electronic structure of graphene is described using the Shubin-Vonsovsky model taking into account the intratomic, interatomic, and interlayer (in the case of bilayer graphene) Coulomb interactions between electrons. The Cooper instability is determined by solving the Bethe-Saltpeter integral equation. The renormalized scattering amplitude is obtained with allowance for the Kohn-Luttinger polarization contributions up to the second order of perturbation theory in the Coulomb interaction. It plays the role of effective interaction in the Bethe-Salpeter integral equation. It is shown that the allowance for the Kohn-Luttinger renormalizations as well as intersite Coulomb interaction noticeably affects the competition between the superconducting phases with the f-wave and d + id-wave symmetries of the order parameter. It is demonstrated that the superconducting transition temperature for an idealized graphene bilayer with significant interlayer Coulomb interaction between electrons is noticeably higher than in the monolayer case.

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Публикация на русском языке Каган, Максим Юрьевич. Сверхпроводимость Кона-Латтинжера в многослойном и бислойном полуметалле с дираковским спектром [Текст] / М. Ю. Каган, В. А. Мицкан, М. М. Коровушкин // Журн. эксперим. и теор. физ. : Наука, 2014. - Т. 146 Вып. 6. - С. 1301-1312

Держатели документа:
Russian Acad Sci, Kapitza Inst Phys Problems, Moscow 119334, Russia.
Natl Res Univ, Higher Sch Econ, Moscow 109028, Russia.
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia.
Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович; RAS Division of Physical Sciences [II.3.1]; Russian Foundation for BasicResearch [14-02-00058, 14-02-31237]; Russian Federation [MK-526.2013.2]; "Dynasty" foundation
}
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    Kagan, M. Y.
    Phase diagram of the Kohn-Luttinger superconducting state for bilayer graphene / M. Y. Kagan, V. A. Mitskan, M. M. Korovushkin // Eur. Phys. J. B. - 2015. - Vol. 88, Is. 6. - Ст. 157, DOI 10.1140/epjb/e2015-60198-x. - Cited References:60. - The authors are grateful to V.V. Val'kov for valuable remarks. This work is supported by the Russian Foundation for Basic Research (Projects Nos. 14-02-00058 and 14-02-31237). One of the authors (M.Yu.K.) gratefully acknowledges support from the Basic Research Program of the National Research University Higher School of Economics. Another one (M.M.K.) thanks the scholarship SP-1361.2015.1 of the President of the Russian Federation and the Dynasty foundation. . - ISSN 1434. - ISSN 1434-6036
   Перевод заглавия: Фазовая диаграмма сверхпроводящего состояния Кона-Латтинжера для бислоя графена

РУБ Physics, Condensed Matter
Рубрики:
REPULSIVE INTERACTIONS
   DOPED GRAPHENE
   HUBBARD-MODEL
   FERMI-SURFACE
Аннотация: The effect of Coulomb interaction between Dirac fermions on the formation of the Kohn-Luttinger superconducting state in bilayer doped graphene is studied disregarding of the effect of the van der Waals potential of the substrate and impurities. The phase diagram determining the boundaries of superconductive domains with different types of symmetry of the order parameter is built using the extended Hubbard model in the Born weak-coupling approximation with allowance for the intratomic, interatomic, and interlayer Coulomb interactions between electrons. It is shown that the Kohn-Luttinger polarization contributions up to the second order of perturbation theory in the Coulomb interaction inclusively and an account for the long-range intraplane Coulomb interactions significantly affect the competition between the superconducting phases with the f-, p + ip-, and d + id-wave symmetries of the order parameter. It is demonstrated that the account for the interlayer Coulomb interaction enhances the critical temperature of the transition to the superconducting phase.

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Держатели документа:
Russian Acad Sci, PL Kapitza Inst Phys Problems, Moscow 119334, Russia.
Natl Res Univ, Higher Sch Econ, Moscow 109028, Russia.
Russian Acad Sci, Siberian Branch, LV Kirensky Inst Phys, Krasnoyarsk 660036, Russia.
MF Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.

Доп.точки доступа:
Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович; Каган, Максим Юрьевич
}
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    Kagan, M. Yu.
    Effect of the long-range Coulomb interaction on the phase diagram of the Kohn–Luttinger superconducting state in Idealized graphene / M. Yu. Kagan, V. A. Mitskan, M. M. Korovushkin // J. Low Temp. Phys. - 2015. - Vol. - P. 1-7, DOI 10.1007/s10909-015-1427-2 . - ISSN 0022. - ISSN 1573-7357
   Перевод заглавия: Влияние межузельного кулоновского взаимодействия на фазовую диаграмму сверхпроводящего состояния Кона-Латтинжера в идеализированном графене
Кл.слова (ненормированные):
Unconventional superconductivity -- Kohn-Luttinger mechanism -- Graphene monolayer
Аннотация: The effect of the long-range Coulomb interaction on the formation of the Kohn–Luttinger superconductivity in monolayer doped graphene is studied disregarding the Van der Waals potential of the substrate and both magnetic and non-magnetic impurities. It is shown that the allowance for the Kohn–Luttinger renormalizations up to the second order in perturbation theory in the on-site Hubbard interaction inclusively, as well as in the intersite Coulomb interaction, significantly affects the interplay between the superconducting phases with the f-wave, p+ip-wave, and d+id-wave symmetries of the order parameter. It is demonstrated that taking Coulomb repulsion of electrons located at the next-nearest neighboring atoms in such a system into account changes qualitatively the phase diagram and enhances the critical temperature of the transition to the superconducting phase.

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Держатели документа:
Russian Acad Sci, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia.
MF Reshetnev Siberian State Aerosp Univ, Krasnoyarsk 660014, Russia.
P. L. Kapitza Institute for Physical Problems, Russian Academy of Sciences, Moscow,

Доп.точки доступа:
Mitskan, V. A.; Мицкан, Виталий Александрович; Korovushkin, M. M.; Коровушкин, Максим Михайлович
}
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Mitskan, V. A.
Implementation of the concept of spin polaron in cuprate superconductors within the diagram technique / V. A. Mitskan, M. M. Korovushkin, D. M. Dzebisashvili // JETP Letters. - 2021. - Vol. 114, Is. 5. - P. 289-295, DOI 10.1134/S0021364021170094. - Cited References: 43. - This work was supported by the Russian Foundation for Basic Research, project nos. 18-02-00837 and 20-32-70059 . - ISSN 0021-3640. - ISSN 1090-6487

РУБ Physics, Multidisciplinary
Рубрики:
ELECTRONIC-STRUCTURE
ELEMENTARY EXCITATIONS
QUASI-PARTICLES
Аннотация: The spectral properties of an ensemble of spin-polaron quasiparticles have been studied within the spin–fermion model of cuprate superconductors using the method combining the Feynman diagram technique and the diagram technique for spin operators. It has been shown that strong spin–charge coupling results in the formation of the lower spin-polaron band separated by a wide energy gap from the band of bare holes. It has been shown that the spin-polaron band has a local minimum near the (π/2, π/2) point of the Brillouin zone. A class of diagrams for the self-energy part that have a fundamental significance for the description of the main features of the spin-polaron spectrum has been determined.

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Публикация на русском языке Мицкан, Виталий Александрович. Реализация концепции спинового полярона в купратных сверхпроводниках на основе диаграммной техники [Текст] / В. А. Мицкан, М. М. Коровушкин, Д. М. Дзебисашвили // Письма в ЖЭТФ. - 2021. - Т. 114 Вып. 5. - С. 339-345

Держатели документа:
Russian Acad Sci, Kirensky Inst Phys, Siberian Branch, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Korovushkin, M. M.; Коровушкин, Максим Михайлович; Dzebisashvili, D. M.; Дзебисашвили, Дмитрий Михайлович; Мицкан, Виталий Александрович
}
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10.

    Occurrence of Topologically Nontrivial Phases, Cascade of Quantum Transitions, and Identification of Majorana Modes in Chiral Superconductors and Nanowires (Scientific Summary) / V. V. Val'kov [et al.] // JETP Letters. - 2019. - Vol. 110, Is. 2. - P. 140-153, DOI 10.1134/S002136401914011X. - Cited References: 88. - This work was supported by the Russian Foundation for Basic Research (project nos. 16-02-00073, 18-32-00443, 19-02-00348) and jointly by the Government of the Krasnoyarsk Territory, the Krasnoyarsk Regional Fund of Science (project no. 18-42-243017, "Manifestation of Coulomb Interactions and Effects of Bounded Geometry in the Properties of Topological Edge States of Nanostructures with Spin-Orbit Interaction"; project no. 18-42-243018, "Contact Phenomena and Magnetic Disorder in the Problem of the Formation and Detection of Topologically Protected Edge States in Semiconductor Nanostructures"; and project no. 18-42-240014, "Single-Orbit Effective Model of an Ensemble of Spin-Polaron Quasiparticles in the Problem of Describing the Intermediate State and Pseudogap Behavior of Cuprate Superconductors"). S.V. Aksenov and A. O. Zlotnikov acknowledge the support of the Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific Schools (project nos. MK-3722.2018.2 and MK-3594.2018.2). . - ISSN 0021-3640. - ISSN 1090-6487
Рубрики:
HUBBARD FERMIONS
   BOUND-STATE
   SPIN
   POLARIZATION
   COEXISTENCE
Аннотация: 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 transition with change in the topological index in an ensemble of Hubbard fermions on a triangular lattice have been reported. Nontrivial topology of the phase of coexistence of d + id chiral superconductivity and 120° spin ordering in a system with the triangular lattice has been discussed and the formation of Majorana modes in such a phase has been demonstrated. A cascade of quantum transitions that occurs at the variation of the magnetic field or the electrochemical potential has been analyzed for an open nanowire with the Rashba spin-orbit coupling and the induced superconducting pairing potential. It has been shown that anomalies of magneto- and electrocaloric effects are manifested near such quantum transitions and can be used to experimentally test materials on the existence of topologically nontrivial phases in them. The switching of the spin-polarized current in the topological superconducting phase has been predicted for a semimetal/superconducting wire/semimetal structure in the weak nonequilibrium regime.

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Держатели документа:
Russian Acad Sci, Siberian Branch, Kirensky Inst Phys, Fed Res Ctr KSC, Krasnoyarsk 660036, Russia.

Доп.точки доступа:
Val'kov, V. V.; Вальков, Валерий Владимирович; Mitskan, V. A.; Мицкан, Виталий Александрович; Zlotnikov, A. O.; Злотников, Антон Олегович; Shustin, M. S.; Шустин, Максим Сергеевич; Aksenov, S. V.; Аксенов, Сергей Владимирович; Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [16-02-00073, 18-32-00443, 19-02-00348]; Government of the Krasnoyarsk Territory; Krasnoyarsk Regional Fund of Science [18-42-243017, 18-42-243018, 18-42-240014]; Council of the President of the Russian Federation for State Support of Young Scientists and Leading Scientific SchoolsLeading Scientific Schools Program [MK-3722.2018.2, MK-3594.2018.2]
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