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Thermodynamic Properties of Superconducting Magnetized Nanotubes
Nanopages. 2013. No. 8. P. 1-7.
Eminov P. A., Sezonov Yu.I.
A numerical study of the thermodynamic properties of a superconducting quantum cylinder in a longitudinal magnetic field is carried out. Closed-form expressions for the critical temperature, the free energy, the heat capacity jump, and the magnetization difference between the superconducting and normal phases as functions of the nanotube parameters are obtained in limit cases.
Keywords: нанотрубкаnanotubesuperconductivityсверхпроводимостьmagnetic fieldmagnetizationнамагниченностьthermodynamic potentialтермодинамический потенциалвнешнее магнитное поле
Publication based on the results of:
Eminov P. A., Ul’din A., Low Temperature Physics 2011 Т. 37 № 4 С. 356-359
Вычислен термодинамический потенциал сверхпроводящего квантового цилиндра. Изучена зависимость критической температуры и теплоемкости сверхпроводящей системы от поверхностной концентрации электронов и радиуса нанотрубки. Показано, что критическая температура осциллирует при изменении параметра, равного отношению энергии Ферми к энергии размерного конфайнмента. ...
Added: December 31, 2012
Eminov P. A., Ul’din A., Sezonov Y. I. et al., Russian Journal of Mathematical Physics 2010 Vol. 17 No. 2 P. 154-158
The thermodynamical potential of a superconducting quantum cylinder is calculated. The dependence of the critical temperature and the heat capacity of a superconducting system of the surface concentration of electrons and on the radius of the nanotube is studied. ...
Added: April 12, 2012
Eminov P. A., Sezonov Y. I., Gordeeva S., Diamond and Related Materials 2014 Vol. 49 P. 72-76
Analysis of the contribution of electron scattering on phonons, longitudinal and flexural resistance in the nanotube in a longitudinal magnetic field has been carried out quantitatively. The dependence of the conductance of the nanostructure on the nanotube radius, surface electron density, temperature, and Aharonov–Bohm parameter in the case of an isotropic phonon spectrum and taking ...
Added: November 23, 2014
Pudalov V., Vlasenko V., Pervakov K. et al., IEEE Transactions on Applied Superconductivity 2019 Vol. 29 No. 3 P. 6900505-1-5
The FeSe wires and tapes with Fe (S22 steel) and Cu/Nb sheath were fabricated by various modifications of the
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Семенов А. В., Девятов И. А., Smirnov K. et al., Журнал радиоэлектроники 2011 № 11
We investigate contribution to the detectivity of superconducting radiation sensors, originated from a change in spectral functions of the absorber under influence of the absorbed power. For the absorber manufactured of dirty superconducting film we demonstrate that at low temperature the only cause of the change in spectral functions is the change of the order ...
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Samsonova A. S., Zolotov P. I., Baeva E. et al., IEEE Transactions on Applied Superconductivity 2021 Vol. 31 No. 5 Article 7000205
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Arutyunov K., Lehtinen J., Physical Review Letters 2022 Vol. 128 Article 159702
Comment LEK1147 on ``Coulomb blockade and Bloch oscillations in superconducting Ti
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Andrew G. Semenov, Zaikin A., Kuzmin L., Physical Review B: Condensed Matter and Materials Physics 2012 Vol. 86 No. 14 P. 144529-1-144529-5
We argue that electron-electron interactions fundamentally restrict the penetration length of Cooper pairs into a diffusive normal metal from a superconductor. At low temperatures, this Cooper pair dephasing length remains finite and does not diverge. We evaluate the subgap conductance of hybrids in the presence of electron-electron interactions and demonstrate that this length Lϕ can ...
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Kagan M.Yu., Springer, 2013
Overview This book concisely presents the latest trends in the physics of superconductivity and superfluidity and magnetismin novel systems, as well as the problem of BCS-BEC crossover in ultracold quantum gases and high-Tc superconductors. It further illuminates the intensive exchange of ideas between these closely related fields of condensed matter physics over the last 30 ...
Added: February 17, 2014
Kagan M. Yu., Val’kov V. V., Mitskan V. A. et al., Solid State Communications 2014 Vol. 188 P. 61-66
Idealized graphene monolayer is considered neglecting the van der Waals potential of the substrate and the role of the nonmagnetic impurities. The effect of the long-range Coulomb repulsion in an ensemble of Dirac fermions on the formation of the superconducting pairing in a monolayer is studied in the framework of the Kohn–Luttinger mechanism. The electronic ...
Added: April 1, 2015
Marques C. A., Neat M. J., Yim C. M. et al., New Journal of Physics 2020 Vol. 22 No. June Article 063049
In a superconductor that lacks inversion symmetry, the spatial part of the Cooper pair wave function has a reduced symmetry, allowing for the mixing of spin-singlet and spin-triplet Cooper pairing channels and thus providing a pathway to a non-trivial superconducting state. Materials with a non-centrosymmetric crystal structure and with strong spin–orbit coupling are a platform ...
Added: October 11, 2020
Семенов А. В., Девятов И. А., Третьяков И. В. et al., Журнал радиоэлектроники 2011 № 11
Nonlinear Ginzburg-Landau equation for dirty supercondicting 1D wire is derived in the limit of high magnetic field. ...
Added: October 12, 2017
Vagov A., Tiago T. Saraiva, Arkady A. Shanenko et al., Communications Physics 2023 Vol. 6 Article 284
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Added: February 9, 2015
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Superconducting hybrid structures with topological order and induced magnetization offer a promising way to realize fault-tolerant quantum computation. However, the effect of the interplay between magnetization and the property of the topological insulator surface, otherwise known as spin-momentum locking on the superconducting proximity effect, still remains to be investigated. We relied on the quasiclassical self-consistent ...
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Kuzovnikov M., Antonov Vladimir E., Kulakov V. et al., PHYSICAL REVIEW MATERIALS 2023 Vol. 7 No. 2 Article 024803
Zirconium trihydride and, for comparison, trideuteride with hexagonal close-packed (hcp) metal lattices
were synthesized at a hydrogen/deuterium pressure of 9 GPa and a temperature of 873 K using toroid-type
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Проведен анализ транспортных свойств двух типов спиновых клапанов, в которых в качестве одного из двух ферромагнитных слоев в структурах Ф1/Ф2/C использовался сплав Гейслера Co_{2}Cr_{1−x}Fe_{x}Al_{y}. Слой сплава Гейслера был использован: 1) в качестве слабого ферромагнетика, в случае Ф2-слоя; 2) в качестве полуметалла, в случае Ф1-слоя. В первом случае, был получен большой классический эффект сверхпроводящего спинового клапана ...
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Brems X., Muhlbauer S., Córdoba C. W. et al., Superconductor Science and Technology 2022 Vol. 35 No. 3 Article 035003
Small-angle neutron scattering is used in combination with transport measurements to
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Palnichenko A. V., Mazilkin A. A., Rybchenko O. et al., Physica C: Superconductivity and its Applications 2020 Vol. 571 Article 1353608
Metastable superconducting-like behavior of rhombohedral Bi samples exposed to surface oxidation under special conditions has been observed below the critical temperature range of 15–35 K. The ac magnetic susceptibility and electrical resistance measurements imply that the superconductivity appears in the Bi/Bi2O3 interfacial layer formed at the surface of the samples. ...
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Эминов П. А., Сезонов Ю. И., Гордеева С. В., Физика твердого тела 2014 Т. 56 № 3 С. 423-430
Проведено численное и аналитическое исследование термодинамических свойств сверхпроводящего намагниченного квантового цилиндра. Изучена зависимость разности намагниченностей сверхпроводящей и нормальной фаз от параметров нанотрубки, температуры и магнитного поля. Вычислен скачок теплоемкости сверхпроводящего и нормального состояний при критической температуре. Исследован флуктуационный вклад в термодинамические свойства нанотрубки при температуре выше точки перехода. ...
Added: March 1, 2015