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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Nasirpouri F., Peighambari S. M., Samardak A. S., Ognev A. V., Sukovatitsina E. V., Modin E. B., Chebotkevich L. A., Komogortsev S. V., Bending S. J.
Заглавие : Electrodeposited Co93.2P6.8 nanowire arrays with core-shell microstructure and perpendicular magnetic anisotropy
Коллективы : Russian Ministry of Education and Science [559]; Far Eastern Federal University
Место публикации : J. Appl. Phys.: American Institute of Physics, 2015. - Vol. 117, Is. 17. - Ст.17E715. - ISSN 0021, DOI 10.1063/1.4919124. - ISSN 10897550(eISSN)
Примечания : Cited References:30. - Alexander Samardak and his colleagues acknowledge the support of the Russian Ministry of Education and Science under the state task 559 and Far Eastern Federal University.
Предметные рубрики: FERROMAGNETIC NANOWIRES
STRUCTURAL-PROPERTIES
NI
ALUMINA
FE
Аннотация: We demonstrate the formation of an unusual core-shell microstructure in Co93.2P6.8 nanowires electrodeposited by alternating current (ac) in an alumina template. By means of transmission electron microscopy, it is shown that the coaxial-like nanowires contain amorphous and crystalline phases. Analysis of the magnetization data for Co-P alloy nanowires indicates that a ferromagnetic core is surrounded by a weakly ferromagnetic or non-magnetic phase, depending on the phosphor content. The nanowire arrays exhibit an easy axis of magnetization parallel to the wire axis. For this peculiar composition and structure, the coercivity values are 2380 ± 50 and 1260 ± 35 Oe, parallel and perpendicular to the plane directions of magnetization, respectively. This effect is attributed to the core-shell structure making the properties and applications of these nanowires similar to pure cobalt nanowires with an improved perpendicular anisotropy.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Voronin A. S., Ivanchenko F. S., Simunin M. M., Shiverskiy A. V., Aleksandrovsky A. S., Nemtsev I. V., Fadeev Y. V., Karpova D. V., Khartov S. V.
Заглавие : High performance hybrid rGO/ Ag quasi-periodic mesh transparent electrodes for flexible electrochromic devices
Место публикации : Appl. Surf. Sci.: Elsevier Science, 2016. - Vol. 364. - P.931–937. - ISSN 0169-4332, DOI 10.1016/j.apsusc.2015.12.182. - ISSN 1873-5584
Примечания : Cited References: 31
Предметные рубрики: NANOWIRE NETWORKS
GRAPHENE FILMS
OXIDE
OXIDATION
HEATERS
Ключевые слова (''Своб.индексиров.''): quasi-periodic mesh transparent electrode self-organized template--reduced graphene oxide (rgo)--flexible electrochromic device
Аннотация: A possibility of creating a stable hybrid coating based on the hybrid of a reduced graphene oxide (rGO)/ Ag quasi-periodic mesh (q-mesh) coating has been demonstrated. The main advantages of the suggested method are the low cost of the processes and the technology scalability. The Ag q-mesh coating is formed by means of the magnetron sputtering of silver on the original template obtained as a result of quasi-periodic cracking of a silica film. The protective rGO film is formed by low temperature reduction of a graphene oxide (GO) film, applied by the spray-deposition in the solution of NaBH4. The coatings have low sheet resistance (12.3 Ω/sq) and high optical transparency (82.2%). The hybrid coating are characterized by high chemical stability, as well as they show high stability to deformation impacts. High performance of the hybrid coatings as electrodes in the sandwich-system «electrode – electrochromic composition – electrode» has been demonstrated. The hybrid electrodes allow the electrochromic sandwich to function without any visible degradation for a long time, while an unprotected mesh electrode does not allow performing even a single switching cycle.
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Koblischka M. R., Gokhfeld D. M., Chang C., Hauet T., Hartmann U.
Заглавие : Pinning force scaling of electrospun Bi-2212 nanowire networks
Место публикации : Solid State Commun.: Elsevier, 2017. - Vol. 264. - P.16-18. - ISSN 00381098 (ISSN), DOI 10.1016/j.ssc.2017.07.002
Примечания : Cited References: 24. - This work is supported by the DFG project Ko2323/8, which is gratefully acknowledged
Ключевые слова (''Своб.индексиров.''): electrospinning--bi-2212 superconductors--flux pinning--pinning force scaling
Аннотация: Flux pinning forces were determined on different network samples of superconducting Bi2Sr2CaCu2O8 (Bi-2212) nanowires prepared by the electrospinning technique. We employed magnetization data determined by SQUID magnetometry in a wide temperature range 10 K T 35 K, where a strong superconducting signal prevails. The scaling analysis of the pinning forces was applied to interprete the data obtained. Both pure and Li-doped Bi2212 nanowire networks exhibit a peak position of h0∼ 0.11, which is smaller than the expected value of h0
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Ivanov A. A., Orlov V. A.
Заглавие : Self-organization of the magnetization in ferromagnetic nanowires
Коллективы : Euro-Asian Symposium "Trends in MAGnetism", "Trends in MAGnetism", Euro-Asian Symposium, Институт физики им. Л.В. Киренского Сибирского отделения РАН , RFBR [14-02-00238-a]
Место публикации : J. Magn. Magn. Mater.: Elsevier Science, 2017. - Vol. 440. - P.217-220. - ISSN 0304-8853, DOI 10.1016/j.jmmm.2016.12.053. - ISSN 1873-4766(eISSN)
Примечания : Cited References:21. - This study was supported by RFBR, Project no. 14-02-00238-a
Предметные рубрики: SYSTEM
ANISOTROPY
Ключевые слова (''Своб.индексиров.''): domain wall--nanowire--magnetic inhomogeneities--stochastic domains
Аннотация: In this work we demonstrate the occurrence of the characteristic spatial scale in the distribution of magnetization unrelated to the domain wall or crystallite size with using computer simulation of magnetization in a polycrystalline ferromagnetic nanowire. This is the stochastic domain size. We show that this length is included in the spectral density of the pinning force of domain wall on inhomogeneities of the crystallographic anisotropy. The constant and distribution of easy axes directions of the effective anisotropy of stochastic domain, are analytically calculated.
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Mitskan V. A., Shustin M. S.
Заглавие : Cascade of quantum transitions and magnetocaloric anomalies in an open nanowire
Коллективы : Russian Foundation for Basic Research; Krasnoyarsk Territorial Foundation of RD Activities [16-42-243056r, 16-42-243057, 17-42-240441]; Russian Foundation for Basic Research [16-02-00073]; Government of the Krasnoyarsk Territory
Место публикации : JETP Letters. - 2017. - Vol. 106, Is. 12. - P.798-804. - ISSN 0021-3640, DOI 10.1134/S0021364017240134. - ISSN 1090-6487(eISSN)
Примечания : Cited References:32. - We are grateful to A.D. Fedoseev and A.O. Zlotnikov for the useful comments and discussions of the results. This work was supported jointly by the Russian Foundation for Basic Research, the Government of the Krasnoyarsk Territory, and the Krasnoyarsk Territorial Foundation for the Support of R&D Activities (project nos. 16-42-243056r, 16-42-243057, and 17-42-240441), as well as by the Russian Foundation for Basic Research (project no. 16-02-00073).
Предметные рубрики: MAJORANA FERMIONS
ZERO MODES
SUPERCONDUCTOR
Аннотация: A sequence of magnetocaloric anomalies occurring with the change in a magnetic field H is predicted for an open nanowire with the Rashba spin–orbit coupling and the induced superconducting pairing potential. The nature of such anomalies is due to the cascade of quantum transitions related to the successive changes in the fermion parity of the nanowire ground state with the growth of the magnetic field. It is shown that the critical Hc values fall within the parameter range corresponding to the nontrivial values of the Z2 topological invariant of the corresponding 1D band Hamiltonian characteristic of the D symmetry class. It is demonstrated that such features in the behavior of the open nanowire are retained even in the presence of Coulomb interactions.
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6.

Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Lukyanenko A. V., Tarasov A. S., Bondarev I. A., Rautskii M. V., Smolyarova T. E., Matsynin A. A., Zelenov F. V., Yakovlev I. A., Varnakov S. N., Ovchinnikov S. G., Volkov N. V.
Заглавие : Silicon nanowire field-effect transistors. Technology and characterization
Коллективы : Asian School-Conference on Physics and Technology of Nanostructured Materials, Азиатская школа-конференция по физике и технологии наноструктурированных материалов, Институт автоматики и процессов управления ДВО РАН, Дальневосточный федеральный университет
Место публикации : Fourth Asian school-conference on physics and technology of nanostructured materials (ASCO-NANOMAT 2018): proceedings. - Vladivostok: Dalnauka, 2018. - P.111
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Val'kov V. V., Mitskan V. A., Shustin M. S.
Заглавие : Ground-State Fermion Parity and Caloric Properties of a Superconducting Nanowire
Место публикации : J. Exp. Theor. Phys. - 2019. - Vol. 129, Is. 3. - P.426-437. - ISSN 10637761 (ISSN), DOI 10.1134/S1063776119080144
Примечания : Cited References: 74. - This work was supported by the Russian Foundation for Basic Research (project nos. 16-02-00073, 18-32-00443, 18-42-243017, 18-42-243018), the Government of the Krasnoyarsk Kray, the Krasnoyarsk Kray Science Foundation within the scientific projects “Contact Phenomena and Magnetic Disorder in the Formation and Detection of Topologically Protected Edge States in Semiconductor Nanostructures” (project no. 18-42-243018), “Manifestation of Coulomb Interactions and Bounded-Geometry Effects in the Properties of Topological Edge States of Nanostructures with Spin–Orbit Interactions” (project no. 18-42-243017). One of us (Sh. M. S.) thanks the Council for Grants of the Russian President (project nos. MK-3594.2018.2 and MK-3722.2018.2).
Аннотация: Abstract: 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 conditions. Allowance for the open boundaries is shown to cause the topologically nontrivial parameter region to be partitioned into a set of subregions with a different ground-state fermionic parity. This peculiarity is related to the emergence of edge modes with nonmonotonically changing excitation energies in the system as its parameters change. At the quantum transition point, at which the ground-state fermionic parity changes, the edge-mode energy is zero. The magneto- and electrocaloric effects are shown to be effective characteristics that allow the series of quantum transitions in an open nanowire to be identified experimentally. These effects at low temperatures exhibit an anomalous behavior in the parameter region for which topologically stable Majorana modes are realized in long nanowires. © 2019, Pleiades Publishing, Inc.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Smolyarova T. E., Lukyanenko A. V., Tarasov A. S., Shanidze L. V., Baron F. A., Zelenov F. V., Yakovlev I. A., Volkov N. V.
Заглавие : Biosensors based on nanowire field effect transistors with Schottky contacts
Коллективы : International School and Conference on optoelectronics, photonics, engineering and nanostructures
Место публикации : J. Phys.: Conf. Ser. - 2019. - Vol. 1410. - Ст.012013. - ISSN 1742-6588, DOI 10.1088/1742-6596/1410/1/012013. - ISSN 1742-6596 (eISSN)
Примечания : Cited References: 29. - This study was supported by the Russian Foundation for Basic Research, project no. 18-32-00035 and supported in part by the Ministry of Education and Science of the Russian Federation and the Siberian Branch of the Russian Academy of Sciences, project II.8.70, and the Presidium of the Russian Academy of Sciences, Fundamental Research Program no. 32 «Nanostructures: Physics, Chemistry, Biology, Basics of Technologies».
Аннотация: A top-down nanofabrication approach was used to obtain silicon nanowires from silicon-on-insulator wafers using direct-write electron beam lithography and plasma-reactive ion etching. Fabricated with designed pattern silicon nanowires are 0.4, 0.8, 2 μm in width and 100 nm in height. The devices can be applied in future medical diagnostic applications as novel biosensors with detection principle based on the changes in electrical characteristics of the silicon nanowires functionalized with thiol-containing molecules.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yoo E., Samardak A. Y., Jeon Y. S., Samardak A. S., Ognev A. V., Komogortsev S. V., Kim Y. K.
Заглавие : Composition-driven crystal structure transformation and magnetic properties of electrodeposited Co–W alloy nanowires
Место публикации : J. Alloys Compd. - 2020. - Vol. 843. - Ст.155902. - ISSN 09258388 (ISSN), DOI 10.1016/j.jallcom.2020.155902
Примечания : Cited References: 48. - This study was supported by the Samsung Research Funding & Incubation Center of Samsung Electronics under Project Number SRFC-TA1703-06, and by the Russian Ministry of Science and Higher Education under the state task (0657 -2020-0013), by Act 211 of the Government of the Russian Federation (02.A03.21.0011).
Аннотация: The cobalt (Co)–tungsten (W) alloys exhibit unique combinations of mechanical and magnetic properties, biocompatibility, resistance against corrosion, wear, and high-temperature, which makes them desirable materials for various practical applications. A nanoporous template with incorporated Co–W alloy nanowires is a soft magnetic composite, whose dielectric and magnetic properties can be tuned through the host material, pore distribution and size, Co–W composition and crystal structure, and geometry of the nanowires. Here, we report the composition-dependent structural and magnetic properties of Co–W alloy nanowires embedded in alumina templates by electrodeposition. The addition of W transforms cobalt from the crystalline hexagonal-close-packed (hcp) Co to a mixed nanocrystalline/amorphous-like Co(W) solid solution with ferromagnetic behavior and composition similar to that of the weakly magnetic Co3W compound. The combination of the approach to magnetic saturation, anisotropy field distribution method, micromagnetic simulations, and first-order reversal curve diagram identification method elucidates the structure-driven magnetization reversal processes in both individual nanowires and magnetostatically coupled array as a whole.
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zlotnikov A. O., Aksenov S. V., Shustin M. S.
Заглавие : Spin-orbit coupling-induced effective interactions in superconducting nanowires in the strong correlation regime
Коллективы : Russian Foundation for Basic ResearchRussian Foundation for Basic Research (RFBR) [19-02-00348, 20-3270059]; Krasnoyarsk Territorial Foundation [19-42-240011, 18-42240014]; Government of the Krasnoyarsk Territory; Presidium of the Russian Academy of SciencesRussian Academy of Sciences [I.12]; Council for Grants of the President of the Russian Federation [MK-1641.2020.2]
Место публикации : Phys. Solid State. - 2020. - Vol. 62, Is. 9. - P.1612-1618. - ISSN 1063-7834, DOI 10.1134/S1063783420090371. - ISSN 1090-6460(eISSN)
Примечания : Cited References: 24. - This study was supported by the Russian Foundation for Basic Research, projects nos. 19-02-00348 and 20-3270059, the Government of the Krasnoyarsk Territory and the Krasnoyarsk Territorial Foundation for Support of Scientific and R&D Activity, projects nos. 19-42-240011 and 18-42240014 "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,"and the Presidium of the Russian Academy of Sciences, program I.12 "Fundamental Problems of High-Temperature Superconductivity." S.V.A. thanks the Council for Grants of the President of the Russian Federation for Governmental Support of Young Russian Scientists, project no. MK-1641.2020.2
Аннотация: In the second order of the operator form of the perturbation theory, the effective interactions in a superconducting nanowire have been obtained at the strong electron correlations, when the spin-orbit coupling parameter is comparable with the hopping integral. Using the exact diagonalization technique, in short nanowires with the open boundary conditions at the strong Coulomb repulsion, the excitations corresponding to the Majorana edge states with the energy below the value of a bulk superconducting gap have been demonstrated.
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