Institution
Donetsk National University
Education•Vinnytsia, Ukraine•
About: Donetsk National University is a education organization based out in Vinnytsia, Ukraine. It is known for research contribution in the topics: Amplifier & Boundary value problem. The organization has 1178 authors who have published 1334 publications receiving 6220 citations. The organization is also known as: Donets’kyi Natsional’nyi Universytet & Donetsk National University.
Papers published on a yearly basis
Papers
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TL;DR: In this article, the authors outline a new direction in the area of photonic crystals (PCs), or photonic band gap materials, i.e. one-, two-, or three-dimensional superstructures with periods that are comparable with the wavelengths of electromagnetic radiation.
Abstract: In this paper we outline a new direction in the area of photonic crystals (PCs), or photonic band gap materials, i.e. one-, two-, or three-dimensional superstructures with periods that are comparable with the wavelengths of electromagnetic radiation. The main (and principal) characteristic of this new class of PCs is the presence of magnetically ordered components (or external magnetic field). The linear and nonlinear optical properties of such magnetic PCs are discussed.
346 citations
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07 Feb 2018TL;DR: More than 200 reduced polyoxometalates (POMs) structures are described in this paper, with emphasis placed on how reduction influences POM structure, function and properties.
Abstract: Ever since the discovery and development of polyoxometalates (POMs), it has been known that they can exist in electron-rich reduced forms of different archetypes, structural flexibilities and functionalities. There are now reliable synthetic strategies for electron-rich POMs — materials that have unique and potentially useful catalytic, electronic and magnetic properties. This Review covers the synthesis and applications of these reduced species, and also highlights their differences and advantages relative to fully oxidized POMs. More than 200 reduced POM structures are described in this Review, with emphasis placed on how reduction influences POM structure, function and properties. The metals in polyoxometalates need not be in their highest oxidation states. Indeed, polyoxometalates can exist in reduced forms, and several different metals can be incorporated into various structural archetypes. This Review describes the synthesis and characterization of these complexes, along with their topical catalytic, electronic and biological properties.
315 citations
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Bose Corporation1, Cardiff University2, Durham University3, Adam Mickiewicz University in Poznań4, Max Planck Society5, Katholieke Universiteit Leuven6, Delft University of Technology7, Georgia Institute of Technology8, Kaiserslautern University of Technology9, Beihang University10, École Polytechnique Fédérale de Lausanne11, Saratov State University12, Paris-Sorbonne University13, The Catholic University of America14, University of Notre Dame15, University of Münster16, Emory University17, Polytechnic University of Milan18, Helmholtz-Zentrum Dresden-Rossendorf19, Dresden University of Technology20, University of Exeter21, Donetsk National University22, SRM University23, National University of Singapore24, University of Greifswald25, Kyoto University26, Tohoku University27, Federico Santa María Technical University28, University of Santiago, Chile29, University of Perugia30, Université Paris-Saclay31, University of Manitoba32, University of Colorado Colorado Springs33, University of Tokyo34, University of Groningen35, Technische Universität München36, Technical University of Dortmund37, University of Vienna38, Aalto University39, University of California, Riverside40, Intel41, University of Duisburg-Essen42, University of Oldenburg43
TL;DR: The Roadmap on Magnonics as mentioned in this paper is a collection of 22 sections written by leading experts in this field who review and discuss the current status but also present their vision of future perspectives.
Abstract: Magnonics is a rather young physics research field in nanomagnetism and nanoscience that addresses the use of spin waves (magnons) to transmit, store, and process information. After several papers and review articles published in the last decade, with a steadily increase in the number of citations, we are presenting the first Roadmap on Magnonics. This a collection of 22 sections written by leading experts in this field who review and discuss the current status but also present their vision of future perspectives. Today, the principal challenges in applied magnonics are the excitation of sub-100 nm wavelength magnons, their manipulation on the nanoscale and the creation of sub-micrometre devices using low-Gilbert damping magnetic materials and the interconnections to standard electronics. In this respect, magnonics offers lower energy consumption, easier integrability and compatibility with CMOS structure, reprogrammability, shorter wavelength, smaller device features, anisotropic properties, negative group velocity, non-reciprocity and efficient tunability by various external stimuli to name a few. Hence, despite being a young research field, magnonics has come a long way since its early inception. This Roadmap represents a milestone for future emerging research directions in magnonics and hopefully it will be followed by a series of articles on the same topic.
188 citations
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TL;DR: In this paper, the concepts of boundary relations and the corresponding Weyl families are introduced, and fruitful connections between certain classes of holomorphic families of linear relations on the complex Hilbert space H and the class of unitary relations Gamma : (H 2, J(H)) -> (H-2, J (H)), where Gamma need not be surjective and is even allowed to be multivalued.
Abstract: The concepts of boundary relations and the corresponding Weyl families are introduced. Let S be a closed symmetric linear operator or, more generally, a closed symmetric relation in a Hilbert space h, let H be an auxiliary Hilbert space, let [GRAPHICS] and let JH be defined analogously. A unitary relation G from the Krein space (h(2), J(h)) to the Kre. in space (H-2, J(H)) is called a boundary relation for the adjoint S* if ker Gamma = S. The corresponding Weyl family M(lambda) is de. ned as the family of images of the defect subspaces (n) over cap (lambda), lambda is an element of C \ R under Gamma. Here Gamma need not be surjective and is even allowed to be multi-valued. While this leads to fruitful connections between certain classes of holomorphic families of linear relations on the complex Hilbert space H and the class of unitary relations Gamma : ( H-2, J(H)) -> (H-2, J(H)), it also generalizes the notion of so-called boundary value space and essentially extends the applicability of abstract boundary mappings in the connection of boundary value problems. Moreover, these new notions yield, for instance, the following realization theorem: every H-valued maximal dissipative (for lambda is an element of C+) holomorphic family of linear relations is the Weyl family of a boundary relation, which is unique up to unitary equivalence if certain minimality conditions are satisfied. Further connections between analytic and spectral theoretical properties of Weyl families and geometric properties of boundary relations are investigated, and some applications are given.
172 citations
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TL;DR: In this paper, the authors demonstrate that the nonuniformity of the internal magnetic field and magnetization inherent to magnetic structures creates a medium of graded refractive index for propagating magnetostatic waves and can be used to steer their propagation.
Abstract: Magnonics explores precessional excitations of ordered spins in magnetic materials---so-called spin waves---and their use as information and signal carriers within networks of magnonic waveguides. Here, we demonstrate that the nonuniformity of the internal magnetic field and magnetization inherent to magnetic structures creates a medium of graded refractive index for propagating magnetostatic waves and can be used to steer their propagation. The character of the nonuniformity can be tuned and potentially programmed using the applied magnetic field, which opens exciting prospects for the field of graded-index magnonics.
131 citations
Authors
Showing all 1202 results
Name | H-index | Papers | Citations |
---|---|---|---|
V. V. Kruglyak | 37 | 132 | 3419 |
Mark Malamud | 29 | 166 | 3736 |
Oleg Lunov | 28 | 70 | 3105 |
Aleksey Kostenko | 23 | 99 | 1809 |
Vitalii Zablotskii | 22 | 111 | 1606 |
Mikhail Belogolovskii | 21 | 105 | 787 |
Semyon Malamud | 20 | 93 | 1504 |
Vyacheslav N. Baumer | 20 | 217 | 1654 |
I. L. Lyubchanskii | 18 | 29 | 930 |
A. N. Kuchko | 16 | 37 | 689 |
Vladimir Derkach | 15 | 43 | 1804 |
Alexander Zuyev | 14 | 90 | 524 |
Oleksiy Dovgoshey | 14 | 84 | 638 |
Nataliya N. Dadoenkova | 13 | 52 | 762 |
Alexander Barkalov | 13 | 240 | 848 |