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Search for "heterostructures" in Full Text gives 113 result(s) in Beilstein Journal of Nanotechnology.

Density functional theory study of Au-fcc/Ge and Au-hcp/Ge interfaces

  • Olga Sikora,
  • Małgorzata Sternik,
  • Benedykt R. Jany,
  • Franciszek Krok,
  • Przemysław Piekarz and
  • Andrzej M. Oleś

Beilstein J. Nanotechnol. 2023, 14, 1093–1105, doi:10.3762/bjnano.14.90

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  • nanostructures. Here, we investigate several heterostructures with Ge substrates, including the fcc and hcp phases of gold that have been observed experimentally. We determine and discuss their interfacial energies and optimized atomic arrangements, comparing the theory results with available experimental data
  • displacements due to significant mismatch. Finally, analyzing the electronic properties, we demonstrate that Au/Ge systems have metallic character, but covalent-like bonding states between interfacial Ge and Au atoms are also present. Keywords: Au/Ge heterostructures; density functional theory; electronic
  • . Deeper knowledge of surfaces and interfaces in heterostructures can play a crucial role in developing new methods for synthesizing such materials and in expanding their possible applications in nanoscience and nanotechnology. As a result of advances in computational methods and the increasing computer
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Published 15 Nov 2023

ZnO-decorated SiC@C hybrids with strong electromagnetic absorption

  • Liqun Duan,
  • Zhiqian Yang,
  • Yilu Xia,
  • Xiaoqing Dai,
  • Jian’an Wu and
  • Minqian Sun

Beilstein J. Nanotechnol. 2023, 14, 565–573, doi:10.3762/bjnano.14.47

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  • same time, wide effective absorption bandwidth (EAB ≥ 7 GHz) remains a great challenge. A good strategy is to form hierarchical heterostructures, characterized by diverse components, abundant heterogeneous interfaces, multiple reflective paths, and enrichment of structural defects [18][19][20
  • ]. Nevertheless, the EM absorption of most SiC-based absorbers with heterostructures is far from satisfactory [21][22][23]. In our previous work, SiC@C nanowires have been successfully obtained by surface carbonization of SiC nanowires [24]. Carbon materials are prone to bond with other dielectric or magnetic
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Published 04 May 2023

Observation of multiple bulk bound states in the continuum modes in a photonic crystal cavity

  • Rui Chen,
  • Yi Zheng,
  • Xingyu Huang,
  • Qiaoling Lin,
  • Chaochao Ye,
  • Meng Xiong,
  • Martijn Wubs,
  • Yungui Ma,
  • Minhao Pu and
  • Sanshui Xiao

Beilstein J. Nanotechnol. 2023, 14, 544–551, doi:10.3762/bjnano.14.45

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  • patterns. Here, photonic-crystal BIC cavities encircled by the photonic bandgap of lateral heterostructures are designed. The mirror-like photonic bandgap exhibits strong side leakage suppression to confine the mode profile in the designed cavity. Multiple bulk quantized modes are observed both in
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Published 27 Apr 2023

Molecular nanoarchitectonics: unification of nanotechnology and molecular/materials science

  • Katsuhiko Ariga

Beilstein J. Nanotechnol. 2023, 14, 434–453, doi:10.3762/bjnano.14.35

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  • improves single heterojunction yields. The improved structural control of heterojunctions is expected to enable the incorporation of graphene nanoribbon heterostructures with atomic precision in future nanoelectronic devices. Nanocarbons with a defined two-dimensional extent are also attractive targets for
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Published 03 Apr 2023

Formation of nanoflowers: Au and Ni silicide cores surrounded by SiOx branches

  • Feitao Li,
  • Siyao Wan,
  • Dong Wang and
  • Peter Schaaf

Beilstein J. Nanotechnol. 2023, 14, 133–140, doi:10.3762/bjnano.14.14

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  • concentrations, which means that EDS measured only substrate and branch parts. In accordance with previous works [3][4], the nanoflowers can be identified as heterostructures with a core particle and surrounding SiOx nanowires. The core particle is made of segregated Ni silicide and Au, which can be proved by
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Published 20 Jan 2023

Frontiers of nanoelectronics: intrinsic Josephson effect and prospects of superconducting spintronics

  • Anatolie S. Sidorenko,
  • Horst Hahn and
  • Vladimir Krasnov

Beilstein J. Nanotechnol. 2023, 14, 79–82, doi:10.3762/bjnano.14.9

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  • following novelties are presented in the contributed articles of this volume: - Novel promising spintronic elements and materials with controllable switching between stable parallel, orthogonal, and antiparallel arrangements of magnetic moments of the epitaxial PdFe films and PdFe/Ag/PdFe heterostructures
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Editorial
Published 10 Jan 2023

Liquid phase exfoliation of talc: effect of the medium on flake size and shape

  • Samuel M. Sousa,
  • Helane L. O. Morais,
  • Joyce C. C. Santos,
  • Ana Paula M. Barboza,
  • Bernardo R. A. Neves,
  • Elisângela S. Pinto and
  • Mariana C. Prado

Beilstein J. Nanotechnol. 2023, 14, 68–78, doi:10.3762/bjnano.14.8

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  • Waals heterostructures. Being able to scale the production is a crucial step to realizing applications at an industrial level. We present the results of liquid-phase exfoliation of talc using different liquid media, namely sodium cholate aqueous solution (6 mg/mL and 1 mg/mL), Triton X-100 aqueous
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Published 09 Jan 2023

The influence of structure and local structural defects on the magnetic properties of cobalt nanofilms

  • Alexander Vakhrushev,
  • Aleksey Fedotov,
  • Olesya Severyukhina and
  • Anatolie Sidorenko

Beilstein J. Nanotechnol. 2023, 14, 23–33, doi:10.3762/bjnano.14.3

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  • performance improvement can be solved with the help of spintronics devices, which are currently presented in a fairly wide variety of valuable effects: spin valves and valves in thin films and heterostructures [19][20], sensors based on the anomalous Hall effect [21], spin injection and magnetism detection
  • interfaces of nanofilms on the magnetic properties). Experimental studies on the subject of work are associated with a number of difficulties, and related results are planned to be published in following papers. Problem statement for the complex study of cobalt and niobium heterostructures. The sketch of the
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Published 04 Jan 2023

Induced electric conductivity in organic polymers

  • Konstantin Y. Arutyunov,
  • Anatoli S. Gurski,
  • Vladimir V. Artemov,
  • Alexander L. Vasiliev,
  • Azat R. Yusupov,
  • Danfis D. Karamov and
  • Alexei N. Lachinov

Beilstein J. Nanotechnol. 2022, 13, 1551–1557, doi:10.3762/bjnano.13.128

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  • further elaborated [12][13][14]. The purpose of this work was to study this interesting phenomenon in a wide temperature range: from 4.2 K to room temperature. Experimental Layered Pb–PDP–Pb heterostructures were fabricated in a glove box in nitrogen atmosphere with minimum moisture and oxygen content
  • polymer film thickness, which is just 3 nm. After electric measurements, a number of heterostructures was sent for analysis by high resolution transmission electron microscopy and/or scanning electron microscopy. None of the studied samples showed a systematic ‘sticking’ of lead electrodes through the
  • thickness of the polymer or formation of multiple metallic dendrites. However, a number of microphotographs showed some defects in the form of shortcuts (Figure 2c). The origin of these artifacts is not entirely clear: they could be initially present in heterostructures, or they could have appeared during
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Published 19 Dec 2022

Photoelectrochemical water oxidation over TiO2 nanotubes modified with MoS2 and g-C3N4

  • Phuong Hoang Nguyen,
  • Thi Minh Cao,
  • Tho Truong Nguyen,
  • Hien Duy Tong and
  • Viet Van Pham

Beilstein J. Nanotechnol. 2022, 13, 1541–1550, doi:10.3762/bjnano.13.127

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  • and g-C3N4 onto the TNAs substrate, we examined the morphology of these heterostructures by using SEM (Figure 2). There are some small pieces that are randomly distributed on the surface of TNAs in Figure 2a, which were attributed to be MoS2. There is a similar result in the SEM image of g-C3N4/TNAs
  • -triazine of g-C3N4. Vibrational peaks in the 3200 cm−1 region attributed to fluctuations of the C–N group also appeared [49]. Figure 3b shows the bonding states in the MoS2/TNAs and g-C3N4/TNAs heterostructures. The results show that, in addition to the typical bonding of the TNAs substrate such as Ti–O
  • -C3N4 and MoS2 to TNAs. Furthermore, the Efb values of g-C3N4/TNAs and MoS2/TNAs are shifted to −0.14 and −0.045 V vs RHE (Figure 5c). The heterostructures express much more negative Efb values than pristine TNAs, which is attributed to the enhanced electron density, the depletion of the Efb, and
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Published 16 Dec 2022

Recent trends in Bi-based nanomaterials: challenges, fabrication, enhancement techniques, and environmental applications

  • Vishal Dutta,
  • Ankush Chauhan,
  • Ritesh Verma,
  • C. Gopalkrishnan and
  • Van-Huy Nguyen

Beilstein J. Nanotechnol. 2022, 13, 1316–1336, doi:10.3762/bjnano.13.109

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  • production and design of efficient photocatalysts. It also demonstrated that CuS may be used as an effective semiconductor in heterostructures, which is a concept that may be extended to other functional nanomaterials based on bismuth. The most important heterojunctions are known as Z-scheme heterojunctions
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Published 11 Nov 2022

Nonlinear features of the superconductor–ferromagnet–superconductor φ0 Josephson junction in the ferromagnetic resonance region

  • Aliasghar Janalizadeh,
  • Ilhom R. Rahmonov,
  • Sara A. Abdelmoneim,
  • Yury M. Shukrinov and
  • Mohammad R. Kolahchi

Beilstein J. Nanotechnol. 2022, 13, 1155–1166, doi:10.3762/bjnano.13.97

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  • that describes the magnetodynamics in thin films or heterostructures to form the Landau–Lifshitz–Gilbert–Josephson model (LLGJ) [14][15][16]. It is shown that, for a particular set of parameters, the coupled equations reduce to the dynamics of a Duffing oscillator [14]. The cubic nonlinearity in this
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Published 21 Oct 2022

Spindle-like MIL101(Fe) decorated with Bi2O3 nanoparticles for enhanced degradation of chlortetracycline under visible-light irradiation

  • Chen-chen Hao,
  • Fang-yan Chen,
  • Kun Bian,
  • Yu-bin Tang and
  • Wei-long Shi

Beilstein J. Nanotechnol. 2022, 13, 1038–1050, doi:10.3762/bjnano.13.91

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  • use carbon nanotubes or carbon quantum dots to modify MIL101(Fe) to enhance its conductivity and broaden its visible-light response [37][38]. Another strategy is to construct MIL101-based heterostructures with the aid of narrow-gap semiconductors to promote the separation and transfer of
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Published 28 Sep 2022

Self-assembly of C60 on a ZnTPP/Fe(001)–p(1 × 1)O substrate: observation of a quasi-freestanding C60 monolayer

  • Guglielmo Albani,
  • Michele Capra,
  • Alessandro Lodesani,
  • Alberto Calloni,
  • Gianlorenzo Bussetti,
  • Marco Finazzi,
  • Franco Ciccacci,
  • Alberto Brambilla,
  • Lamberto Duò and
  • Andrea Picone

Beilstein J. Nanotechnol. 2022, 13, 857–864, doi:10.3762/bjnano.13.76

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  • spectroscopy; ZnTPP; Introduction Vertical heterostructures composed by organic molecules interfaced with metallic substrates have been the subject of intense experimental and theoretical investigation during the last two decades [1][2][3]. The interest in these hybrid systems has been boosted by their
  • applications in new emerging fields, such as nanoscale catalysis [4][5], organic electronics [6][7], and spintronics [8][9], to name just a few. From a fundamental point of view, well-defined organic/inorganic heterostructures represent an interesting benchmark for the investigation of the boundary between
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Published 30 Aug 2022

Ultrafast signatures of magnetic inhomogeneity in Pd1−xFex (x ≤ 0.08) epitaxial thin films

  • Andrey V. Petrov,
  • Sergey I. Nikitin,
  • Lenar R. Tagirov,
  • Amir I. Gumarov,
  • Igor V. Yanilkin and
  • Roman V. Yusupov

Beilstein J. Nanotechnol. 2022, 13, 836–844, doi:10.3762/bjnano.13.74

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  • fractions by highly mobile s and p electrons (which occurs due to the s–d interaction [40]) should only increase the rate of photoinduced demagnetization on a subpicosecond scale. This mechanism was justified to explain the ultrafast (subpicosecond) transfer of the angular momentum in F/N heterostructures
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Published 25 Aug 2022

Optimizing PMMA solutions to suppress contamination in the transfer of CVD graphene for batch production

  • Chun-Da Liao,
  • Andrea Capasso,
  • Tiago Queirós,
  • Telma Domingues,
  • Fatima Cerqueira,
  • Nicoleta Nicoara,
  • Jérôme Borme,
  • Paulo Freitas and
  • Pedro Alpuim

Beilstein J. Nanotechnol. 2022, 13, 796–806, doi:10.3762/bjnano.13.70

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  • a wide range of 2D material-based devices and heterostructures, especially in optoelectronics [7][8][9]. At present, one of the remaining challenges in the fabrication of graphene-based devices lies in the reproducibility: More than the CVD itself, the transfer process from the growth substrate (e.g
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Published 18 Aug 2022

Hierarchical Bi2WO6/TiO2-nanotube composites derived from natural cellulose for visible-light photocatalytic treatment of pollutants

  • Zehao Lin,
  • Zhan Yang and
  • Jianguo Huang

Beilstein J. Nanotechnol. 2022, 13, 745–762, doi:10.3762/bjnano.13.66

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  • the uniform anchoring of Bi2WO6 nanoparticles on TiO2 nanotubes, as well as strong mutual effects and well-proportioned formation of heterostructures in between the Bi2WO6 and TiO2 phases. These improvements arose from the cellulose-derived unique structures, leading to an enhanced absorption of
  • activities than those of pure TiO2 and Bi2WO6. This is ascribed to the heterostructures built in between the two phases, leading to accelerated separation and transfer of photogenerated electrons and holes. Nevertheless, the effective formation of heterostructures in between the TiO2 and Bi2WO6 phases are
  • limited owing to the aggregation of these phases, resulting in the decrement of active sites during photocatalysis [27]. In order to further increase the effectiveness of these heterostructures, the fabrication of efficient TiO2 materials for a homogeneous dispersion of Bi2WO6 through its morphological
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Published 04 Aug 2022

Experimental and theoretical study of field-dependent spin splitting at ferromagnetic insulator–superconductor interfaces

  • Peter Machon,
  • Michael J. Wolf,
  • Detlef Beckmann and
  • Wolfgang Belzig

Beilstein J. Nanotechnol. 2022, 13, 682–688, doi:10.3762/bjnano.13.60

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  • FI–S heterostructures in the dirty limit. We discussed the dependence of the density of states (and thus also the differential conductance) on the spin mixing angles for different layer thicknesses observing strong deviations from the typically linear behavior in exchange fields. The model yields a
  • confident that our theory will in the future provide further motivation for the interesting physics of ferromagnetic insulators and the proximity effect in ferromagnet or antiferromagnet–superconductor heterostructures. (a) The experimental setup of the FI–S bilayer. The differential conductance is measured
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Published 20 Jul 2022

Revealing local structural properties of an atomically thin MoSe2 surface using optical microscopy

  • Lin Pan,
  • Peng Miao,
  • Anke Horneber,
  • Alfred J. Meixner,
  • Pierre-Michel Adam and
  • Dai Zhang

Beilstein J. Nanotechnol. 2022, 13, 572–581, doi:10.3762/bjnano.13.49

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  • SERS signal of CuPc. Therefore, our results clearly demonstrate that local flake structures can be revealed by monitoring the SERS enhancement at organic molecule/2D-TMDCs heterostructures. Conclusion We demonstrated local structure-related optical properties of a CuPc/MoSe2 heterostructure using SHG
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Published 01 Jul 2022

Zinc oxide nanostructures for fluorescence and Raman signal enhancement: a review

  • Ioana Marica,
  • Fran Nekvapil,
  • Maria Ștefan,
  • Cosmin Farcău and
  • Alexandra Falamaș

Beilstein J. Nanotechnol. 2022, 13, 472–490, doi:10.3762/bjnano.13.40

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  • decrease of the bandgap of ZnO. All of these are contributing to the SERS enhancement. A SERS substrate enhancement factor of 5.4 × 107 and an analytical enhancement factor of 1.3 × 1010 were obtained with Ag–ZnO heterostructures on glass substrates for the detection of methylene orange molecules. These
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Published 27 May 2022

Tunable superconducting neurons for networks based on radial basis functions

  • Andrey E. Schegolev,
  • Nikolay V. Klenov,
  • Sergey V. Bakurskiy,
  • Igor I. Soloviev,
  • Mikhail Yu. Kupriyanov,
  • Maxim V. Tereshonok and
  • Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2022, 13, 444–454, doi:10.3762/bjnano.13.37

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  • attention is paid to tuning the activation functions to a Gaussian form with relatively large amplitude. For the practical implementation of the required tunability, we proposed and investigated heterostructures designed for the implementation of adjustable inductors that consist of superconducting
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Published 18 May 2022

Controllable two- and three-state magnetization switching in single-layer epitaxial Pd1−xFex films and an epitaxial Pd0.92Fe0.08/Ag/Pd0.96Fe0.04 heterostructure

  • Igor V. Yanilkin,
  • Amir I. Gumarov,
  • Gulnaz F. Gizzatullina,
  • Roman V. Yusupov and
  • Lenar R. Tagirov

Beilstein J. Nanotechnol. 2022, 13, 334–343, doi:10.3762/bjnano.13.28

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  • is instructive to investigate the switching properties of Pd1−xFex films and heterostructures based on this alloy targeting the controllable non-collinear magnetic configurations in the bilayer structure. Experimental An epitaxial film of the Pd0.92Fe0.08 alloy with a thickness of 20 nm and an
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Published 30 Mar 2022

Tin dioxide nanomaterial-based photocatalysts for nitrogen oxide oxidation: a review

  • Viet Van Pham,
  • Hong-Huy Tran,
  • Thao Kim Truong and
  • Thi Minh Cao

Beilstein J. Nanotechnol. 2022, 13, 96–113, doi:10.3762/bjnano.13.7

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  • study also indicated that hydrogen bonds between NO and PANI increased the adsorption of NO on the SnO2/PANI surface, leading to enhanced photocatalysis. However, the photocatalytic stability of SnO2/PANI is still a challenging problem. Enesca et al. [29] developed photoactive heterostructures based on
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Published 21 Jan 2022

Topographic signatures and manipulations of Fe atoms, CO molecules and NaCl islands on superconducting Pb(111)

  • Carl Drechsel,
  • Philipp D’Astolfo,
  • Jung-Ching Liu,
  • Thilo Glatzel,
  • Rémy Pawlak and
  • Ernst Meyer

Beilstein J. Nanotechnol. 2022, 13, 1–9, doi:10.3762/bjnano.13.1

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  • predicted as a key ingredient for quantum computing. However, not only the design of complex heterostructures is primordial for future applications but also the characterization of their electronic and structural properties at the atomic scale using the most advanced scanning probe microscopy techniques
  • realization of MZMs in two dimensions has been also observed in vortex cores on a proximitized topological insulator surface [19][20], in iron-based superconductors [7][21][22] or hybrid van der Waals heterostructures [23]. The fingerprint for MZMs in conductance measurements through the nanowire or in
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Published 03 Jan 2022

In situ transport characterization of magnetic states in Nb/Co superconductor/ferromagnet heterostructures

  • Olena M. Kapran,
  • Roman Morari,
  • Taras Golod,
  • Evgenii A. Borodianskyi,
  • Vladimir Boian,
  • Andrei Prepelita,
  • Nikolay Klenov,
  • Anatoli S. Sidorenko and
  • Vladimir M. Krasnov

Beilstein J. Nanotechnol. 2021, 12, 913–923, doi:10.3762/bjnano.12.68

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  • Functional Nanostructures, Orel State University named after I.S. Turgenev, 302026, Russia 10.3762/bjnano.12.68 Abstract Employment of the non-trivial proximity effect in superconductor/ferromagnet (S/F) heterostructures for the creation of novel superconducting devices requires accurate control of magnetic
  • unconventional odd-frequency spin-triplet order parameter should appear. The non-hysteretic nature of this state allows for reversible tuning of the magnetic orientation. Thus, we identify the range of parameters and the procedure for in situ control of devices based on S/F heterostructures. Keywords: cryogenic
  • ][34][35] in various superconductor/ferromagnet (S/F) heterostructures. It is anticipated, that this phenomenon can be employed for the creation of novel superconducting devices, in which the supercurrent is determined and controlled by the magnetic state of the heterostructure, that is, by the
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Published 17 Aug 2021
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