Spin textures induced in n-doped solid electrolytes I V Maznichenko, P Buczek, I Mertig, S Ostanin Journal of Physics D Applied Physics, 2023 A strongly insulating solid-state electrolyte may become conducting upon n-doping. On the basis of ab initio calculations, we demonstrate how the charge-to-spin conversion takes place in Li-doped lithium tantalate. Due to an excess of electrons induced by each Li dopant, the low-conduction 5d band of the nearest Ta shifts down and crosses the Fermi level. The band structure of the doped material displays its spin polarization, whilst the relatively large spin–orbit coupling stimulates the spin textures. Additionally, we anticipate that spin-orbitronic effects may be generated by the charge current via n-doped solid-state electrolytes.
Controlled Electronic and Magnetic Landscape in Self-Assembled Complex Oxide Heterostructures Dae‐Sung Park, Aurora Diana Rata, Rasmus Tindal Dahm, Kanghyun Chu, Yulin Gan, et al. Advanced Materials, 2023 Complex oxide heterointerfaces contain a rich playground of novel physical properties and functionalities, which give rise to emerging technologies. Among designing and controlling the functional properties of complex oxide film heterostructures, vertically aligned nanostructure (VAN) films using a self‐assembling bottom‐up deposition method presents great promise in terms of structural flexibility and property tunability. Here, the bottom‐up self‐assembly is extended to a new approach using a mixture containing a 2Dlayer‐by‐layer film growth, followed by a 3D VAN film growth. In this work, the two‐phase nanocomposite thin films are based on LaAlO3:LaBO3, grown on a lattice‐mismatched SrTiO3001 (001) single crystal. The 2D‐to‐3D transient structural assembly is primarily controlled by the composition ratio, leading to the coexistence of multiple interfacial properties, 2D electron gas, and magnetic anisotropy. This approach provides multidimensional film heterostructures which enrich the emergent phenomena for multifunctional applications.
Defect-induced magnetism in homoepitaxial SrTiO3 A. D. Rata, J. Herrero-Martin, I. V. Maznichenko, F. M. Chiabrera, R. T. Dahm, et al. APL Materials, 2022 Along with recent advancements in thin-film technologies, the engineering of complex transition metal oxide heterostructures offers the possibility of creating novel and tunable multifunctionalities. A representative complex oxide is the perovskite strontium titanate (STO), whose bulk form is nominally a centrosymmetric paraelectric band insulator. By tuning the electron doping, chemical stoichiometry, strain, and charge defects of STO, it is possible to control the electrical, magnetic, and thermal properties of such structures. Here, we demonstrate tunable magnetism in atomically engineered STO thin films grown on STO (001) substrates by controlling the atomic charge defects of titanium (VTi) and oxygen (VO) vacancies. Our results show that the magnetism can be tuned by altering the growth conditions. We provide deep insights into its association to the following defect types: (i) VTi, resulting in a charge rearrangement and local spin polarization, (ii) VO, leading to weak magnetization, and (iii) VTi–VO pairs, which lead to the appearance of a sizable magnetic signal. Our results suggest that controlling charged defects is critical for inducing a net magnetization in STO films. This work provides a crucial step for designing magnetic STO films via defect engineering for magnetic and spin-based electronic applications.
Elastic behavior of metal-assisted etched Si/SiGe superlattice nanowires containing dislocations Nadine Buczek (née Geyer), Michael Hanke, Pawel Buczek, Martin Dubslaff, Alexander A. Tonkikh, et al. Aip Advances, 2022 We systematically investigate structural parameters, such as shape, size, elastic strain, and relaxations, of metal-assisted etched vertically modulated Si/SiGe superlattice nanowires by using electron microscopy, synchrotron-based x-ray diffraction, and numerical linear elasticity theory. A vertical Si/Ge superlattice with atomically flat interfaces is grown by using molecular beam epitaxy on Si-buffered Si(001) substrates. The lattice constants for Si and Ge are 5.43 and 5.66 Å, respectively, which indicate a lattice mismatch of 4.2%. This results in a strained layer in the boundary between Si and Ge leading to dislocations. These substrates serve as the starting material for nanostructuring the surface by using metal-assisted etching. It is shown that the high quality crystalline structure is preserved in the fabrication process, while the lattice mismatch is partially relieved by dislocation formation. Despite this highly effective relaxation path, dislocations present in the parent superlattice do not vanish upon nanostructuring for wires with diameters of down to at least 80 nm. We relate these observations to the applicability of silicon-based nanowires for high-performance thermoelectric generators.
Structure and Magnetism of EuS on Bi2Se3(0001) Holger L. Meyerheim, Arthur Ernst, Katayoon Mohseni, Andrey Polyakov, Igor V. Maznichenko, et al. Physica Status Solidi B Basic Research, 2021
Spin waves in disordered materials Paweł Buczek, Stefan Thomas, Alberto Marmodoro, Nadine Buczek, Xabier Zubizarreta, et al. Journal of Physics Condensed Matter, 2018
Quasi-Particles and Collective Excitations Evgueni V. Chulkov, Irina Sklyadneva, Mackillo Kira, Stephan W. Koch, Jose M. Pitarke, et al. Dynamics at Solid State Surfaces and Interfaces, 2012
Noncollinear spin structure in Dy-doped classical ferrimagnet AK Singh, K Mohseni, V Ney, A Ney, Y Guan, I Kostanovski, M Tangi, ... arXiv preprint arXiv:2601.05762 , 2026 2026
Ab initio modeling of resonant inelastic x-ray scattering from Ca2RuO4 DA Kukusta, LV Bekenov, PF Perndorfer, DV Vyalikh, PA Buczek, A Ernst, ... arXiv preprint arXiv:2511.18526 , 2025 2025
Magnon-electron scattering and non-Landau magnon decay, ab initio theories PA Buczek Johannes Kepler Universität Linz , 2025 2025
Unveiling Electron‐Phonon and Electron‐Magnon Interactions in the Weak Itinerant Ferromagnet LaCo 2 P 2 DY Usachov, K Ali, G Poelchen, M Mende, S Schulz, M Peters, K Bokai, ... Advanced Physics Research 4 (4), 2400137 , 2025 2025 Citations: 3
Electronic correlations arising from anti-Stoner spin excitations: An ab initio study of itinerant ferro- and antiferromagnets S Paischer, D Eilmsteiner, MI Katsnelson, A Ernst, PA Buczek Physical Review B 110 (16), 165121 , 2024 2024 Citations: 5
Fragile altermagnetism and orbital disorder in Mott insulator IV Maznichenko, A Ernst, D Maryenko, VK Dugaev, EY Sherman, ... Physical Review Materials 8 (6), 064403 , 2024 2024 Citations: 20
Correlations, disorder, and multimagnon processes in terahertz spin dynamics of magnetic nanostructures: A first-principles investigation S Paischer, D Eilmsteiner, I Maznichenko, N Buczek, K Zakeri, A Ernst, ... Physical Review B 109 (22), L220405 , 2024 2024 Citations: 14
Emerging two-dimensional conductivity at the interface between mott and band insulators IV Maznichenko, S Ostanin, D Maryenko, VK Dugaev, EY Sherman, ... Physical Review Letters 132 (21), 216201 , 2024 2024 Citations: 8
Emerging two-dimensional conductivity at Mott-band insulator interface IV Maznichenko, S Ostanin, D Maryenko, VK Dugaev, EY Sherman, ... arXiv preprint arXiv:2401.16813 , 2024 2024
Spin textures induced in n -doped solid electrolytes IV Maznichenko, P Buczek, I Mertig, S Ostanin Journal of Physics D: Applied Physics 56 (40), 405305 , 2023 2023 Citations: 2
Controlled electronic and magnetic landscape in self‐assembled complex oxide heterostructures DS Park, AD Rata, RT Dahm, K Chu, Y Gan, I Maznichenko, S Ostanin, ... Advanced Materials 35 (32), 2300200 , 2023 2023 Citations: 4
Nonlocal correlation effects due to virtual spin-flip processes in itinerant electron ferromagnets S Paischer, G Vignale, MI Katsnelson, A Ernst, PA Buczek Physical Review B 107 (13), 134410 , 2023 2023 Citations: 13
Correlated Electrons, Phase Transitions and Frustrated Magnetism in TiF 3 G Fernando, I Maznichenko, A Ernst, P Buczek, M Geilhufe APS March Meeting Abstracts 2023, W55. 012 , 2023 2023
Defect-induced magnetism in homoepitaxial SrTiO3 AD Rata, J Herrero-Martin, IV Maznichenko, FM Chiabrera, RT Dahm, ... APL materials 10 (9) , 2022 2022 Citations: 19
Charge-to-spin conversion in the quasi-two-dimensional electron gas emerging at the hydrogen-doped interface between and IV Maznichenko, P Buczek, I Mertig, S Ostanin Physical Review Materials 6 (6), 064001 , 2022 2022 Citations: 5
Elastic behavior of metal-assisted etched Si/SiGe superlattice nanowires containing dislocations M Hanke, P Buczek, M Dubslaff, AA Tonkikh, B Fuhrmann, HS Leipner AIP Advances 12 (4) , 2022 2022 Citations: 1
Open communication interfaces for Automatic Train Control systems: a vision or reality? L Schnieder, P Buczek Signal+ Draht 114 (3), 29-36 , 2022 2022
CBTC für Stadtbahnanwendungen L Schnieder, P von der Heide, P Buczek Der Nahverkehr, 34-37 , 2022 2022
Emergent quasi-two-dimensional electron gas between and and its prospectively switchable magnetism IV Maznichenko, S Ostanin, I Mertig, P Buczek Physical Review Materials 5 (11), 114001 , 2021 2021 Citations: 4
Eigenmodes of a disordered FeCo magnonic crystal at finite temperatures S Paischer, PA Buczek, N Buczek, D Eilmsteiner, A Ernst Journal of Physics: Condensed Matter 33 (33), 335804 , 2021 2021 Citations: 4
MOST CITED SCHOLAR PUBLICATIONS
Ultrafast magnon generation in an Fe film on Cu (100) AB Schmidt, M Pickel, M Donath, P Buczek, A Ernst, VP Zhukov, ... Physical review letters 105 (19), 197401 , 2010 2010 Citations: 179
Different dimensionality trends in the Landau damping of magnons in iron, cobalt, and nickel: Time-dependent density functional study P Buczek, A Ernst, LM Sandratskii Physical Review B—Condensed Matter and Materials Physics 84 (17), 174418 , 2011 2011 Citations: 127
Energies and Lifetimes of Magnons in Complex Ferromagnets:<? format?> A First-Principle Study of Heusler Alloys P Buczek, A Ernst, P Bruno, LM Sandratskii Physical review letters 102 (24), 247206 , 2009 2009 Citations: 113
Long-living terahertz magnons in ultrathin metallic ferromagnets HJ Qin, K Zakeri, A Ernst, LM Sandratskii, P Buczek, A Marmodoro, ... Nature communications 6 (1), 6126 , 2015 2015 Citations: 66
Ab initio theory of iron-based superconductors F Essenberger, A Sanna, P Buczek, A Ernst, L Sandratskii, EKU Gross Physical Review B 94 (1), 014503 , 2016 2016 Citations: 57
Interface electronic complexes and Landau damping of magnons in ultrathin magnets P Buczek, A Ernst, LM Sandratskii Physical Review Letters 106 (15), 157204 , 2011 2011 Citations: 52
Direct probing of the exchange interaction at buried interfaces K Zakeri, TH Chuang, A Ernst, LM Sandratskii, P Buczek, HJ Qin, Y Zhang, ... Nature Nanotechnology 8 (11), 853-858 , 2013 2013 Citations: 51
Magnon dispersion in thin magnetic films T Balashov, P Buczek, L Sandratskii, A Ernst, W Wulfhekel Journal of Physics: Condensed Matter 26 (39), 394007 , 2014 2014 Citations: 46
Paramagnons in FeSe close to a magnetic quantum phase transition: Ab initio study F Essenberger, P Buczek, A Ernst, L Sandratskii, EKU Gross Physical Review B—Condensed Matter and Materials Physics 86 (6), 060412 , 2012 2012 Citations: 42
Standing Spin Waves as a Basis for the Control of Terahertz Spin Dynamics:<? format?> Time Dependent Density Functional Theory Study P Buczek, A Ernst, LM Sandratskii Physical review letters 105 (9), 097205 , 2010 2010 Citations: 39
Nonmonotonic thickness dependence of spin wave energy in ultrathin Fe films: experiment and theory Y Zhang, P Buczek, L Sandratskii, WX Tang, J Prokop, I Tudosa, ... Physical Review B—Condensed Matter and Materials Physics 81 (9), 094438 , 2010 2010 Citations: 36
Plasmonic skyrmion lattice based on the magnetoelectric effect XG Wang, L Chotorlishvili, N Arnold, VK Dugaev, I Maznichenko, J Barnaś, ... Physical Review Letters 125 (22), 227201 , 2020 2020 Citations: 29
Periodic diffraction patterns for 1D quasicrystals P Buczek, L Sadun, J Wolny arXiv preprint cond-mat/0309008 , 2003 2003 Citations: 29
Lifetimes and chirality of spin waves in antiferromagnetic and ferromagnetic FeRh from the perspective of time-dependent density functional theory LM Sandratskii, P Buczek Physical Review B—Condensed Matter and Materials Physics 85 (2), 020406 , 2012 2012 Citations: 27
Impact of Atomic Structure on the Magnon Dispersion Relation: A Comparison Between and TH Chuang, K Zakeri, A Ernst, LM Sandratskii, P Buczek, Y Zhang, HJ Qin, ... Physical review letters 109 (20), 207201 , 2012 2012 Citations: 24
Magnons in disordered nonstoichiometric low-dimensional magnets P Buczek, LM Sandratskii, N Buczek, S Thomas, G Vignale, A Ernst Physical Review B 94 (5), 054407 , 2016 2016 Citations: 23
Spin dynamics of complex itinerant magnets PA Buczek Martin-Luther-Universität Halle-Wittenberg , 2009 2009 Citations: 21
Fragile altermagnetism and orbital disorder in Mott insulator IV Maznichenko, A Ernst, D Maryenko, VK Dugaev, EY Sherman, ... Physical Review Materials 8 (6), 064403 , 2024 2024 Citations: 20
Defect-induced magnetism in homoepitaxial SrTiO3 AD Rata, J Herrero-Martin, IV Maznichenko, FM Chiabrera, RT Dahm, ... APL materials 10 (9) , 2022 2022 Citations: 19
Spin waves in disordered materials P Buczek, S Thomas, A Marmodoro, N Buczek, X Zubizarreta, ... Journal of Physics: Condensed Matter 30 (42), 423001 , 2018 2018 Citations: 19