Superconducting spin valve effect in Co/Pb/Co heterostructures with insulating interlayers

• Andrey A. Kamashev,
• Nadir N. Garif’yanov,
• Aidar A. Validov,
• Vladislav Kataev,
• Alexander S. Osin,
• Yakov V. Fominov and
• Ilgiz A. Garifullin

Beilstein J. Nanotechnol. 2024, 15, 457–464, doi:10.3762/bjnano.15.41

• , the temperature dependence of the resistivity R(T) was recorded for the P and AP configurations of the magnetizations of the Co1 and Co2 layers by appropriate rotation of the magnetization of the Co2 layer through an external magnetic field. Figure 2 depicts the superconducting transition curves for

Design, fabrication, and characterization of kinetic-inductive force sensors for scanning probe applications

• August K. Roos,
• Ermes Scarano,
• Elisabet K. Arvidsson,
• Erik Holmgren and
• David B. Haviland

Beilstein J. Nanotechnol. 2024, 15, 242–255, doi:10.3762/bjnano.15.23

• -induced deposition of platinum. Finally, we present measurements that characterize the spread of mechanical resonant frequency, the temperature dependence of the microwave resonance, and the sensor’s operation as an electromechanical transducer of force. Keywords: atomic force microscopy; force sensing

• temperature dependence of ωc and verified electromechanical coupling between the cavity mode and the cantilever mode. These measurements were performed in a dry cryostat (DynaCool Physical Properties Measurement System from Quantum Design) with a base temperature of 1.7 K. We modified a measurement stick by

• temperature dependence of the microwave response in the range 1.7–5.0 K, where we find a shift of the resonant frequency ωc by many linewidths, and a change of the coupling parameter η. Figure 9a and Figure 9b show the amplitude and phase of the reflected signal for one of the chips as functions of the

Low temperature atomic layer deposition of cobalt using dicobalt hexacarbonyl-1-heptyne as precursor

• Mathias Franz,
• Mahnaz Safian Jouzdani,
• Lysann Kaßner,
• Marcus Daniel,
• Frank Stahr and
• Stefan E. Schulz

Beilstein J. Nanotechnol. 2023, 14, 951–963, doi:10.3762/bjnano.14.78

• various temperatures in the temperature range of 35 to 125 °C. For all experiments, we used a pattern of 6 s precursor dose, 1 s argon purge, 2 s H2 plasma pulse, and 1 s argon purge, for each cycle. The temperature dependence of the growth rate for the performed ALD processes is shown in Figure 6. In the

• tool. Schematic sketch of the structure of the precursor [Co2(CO)6HC≡CC5H11]. Influence of deposition temperature on film growth rate of continuous CVD depositions. The film growth is based only on thermal decomposition of the precursor. Temperature dependence of inhibition time (red dots) and CVD

Humidity-dependent electrical performance of CuO nanowire networks studied by electrochemical impedance spectroscopy

• Jelena Kosmaca,
• Juris Katkevics,
• Jana Andzane,
• Raitis Sondors,
• Liga Jasulaneca,
• Raimonds Meija,
• Kiryl Niherysh,
• Yelyzaveta Rublova and
• Donats Erts

Beilstein J. Nanotechnol. 2023, 14, 683–691, doi:10.3762/bjnano.14.54

• of magnitude, when the RH increases from approximately 50–60% to 97%. The trend is supported by measurements after 13, 18, and 20 days (Figure 3a). The impedance also decreased with increasing temperature, as it is expected for the semiconductor CuO [18]. The temperature dependence caused a variation

Thermal transport in kinked nanowires through simulation

• Alexander N. Robillard,
• Graham W. Gibson and
• Ralf Meyer

Beilstein J. Nanotechnol. 2023, 14, 586–602, doi:10.3762/bjnano.14.49

• thermal transport in a desired fashion. Further investigations into variably kinked nanowires may include a study of temperature dependence. It is known that in serpentine nanowires [22] at higher temperatures ballistic behaviour is reduced. It is likely that variably kinked nanowires will show stronger

Upper critical magnetic field in NbRe and NbReN micrometric strips

• Zahra Makhdoumi Kakhaki,
• Antonio Leo,
• Federico Chianese,
• Loredana Parlato,
• Giovanni Piero Pepe,
• Angela Nigro,
• Carla Cirillo and
• Carmine Attanasio

Beilstein J. Nanotechnol. 2023, 14, 45–51, doi:10.3762/bjnano.14.5

• and nodal superconductivity, helical vortex states, as well as non-trivial topological effects. Moreover, large values of the upper critical magnetic field have been reported in these materials. Here, we focus on the study of the temperature dependence of the perpendicular magnetic field of NbRe and

• the robustness of the superconductivity in a specific material. For a standard BCS s-wave type-II superconductor, Werthamer, Helfand, and Hohenberg (WHH) have calculated the temperature dependence of the critical field [19]. In this model, two mechanisms are responsible for the breaking of the

• into account, another quantity, λso (the spin–orbit parameter), is introduced in the theory [19]. The effect of λso is to soften the role of α in determining the values of Hc2(T) [19]. When λso = 0, it is [23]. The WHH theory has been used to interpret the temperature dependence of the critical fields

Enhanced electronic transport properties of Te roll-like nanostructures

• E. R. Viana,
• N. Cifuentes and
• J. C. González

Beilstein J. Nanotechnol. 2022, 13, 1284–1291, doi:10.3762/bjnano.13.106

• effective mass [38][39]. However, the very large relative permittivity of t-Te, εr = 53.5, should also be considered. The temperature dependence of the hole mobility in t-Te one-dimensional nanostructures has not been reported to the best of our knowledge. However, for bulk crystals and temperatures above

• , corroborating our interpretation of the temperature dependence of the resistivity. The temperature behavior of the resistivity of the t-Te roll-like nanostructures is somehow different than that previously reported for t-Te bulk crystals and NWs. The first striking characteristic of the previous reports is the

• -nanobelt back-gated FET devices on SiO2/Si substrates. These nanostructures exhibit p-type conductivity with superior room temperature field-effect hole mobility compared to bulk and nanostructures of Te previously synthesized by other methods. The analysis of the temperature dependence of the electrical

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

• Landau–Lifshitz model to reproduce the damping of the precessing magnetic moment. Gilbert damping is also important in modeling other resonance features, as its temperature dependence affects them [20][21], and, in turn, in the superconducting correlations that affect it [22]. The magnetization

Ultrafast signatures of magnetic inhomogeneity in Pd_1−xFe_x (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

• femtosecond light pulses contain components whose temperature dependence correlates with that of the spontaneous magnetization. It was argued that such responses can serve as a source of information on magnetic inhomogeneities. In this work, we extend the series of Pd1−xFex films to a wider concentration

• of the iron dopant leads to a development of a temperature dependence of ΔR/R(Δt) responses, both qualitative (the appearance of new relaxation components) and quantitative (changes in their amplitudes and time constants). While two decaying exponents are sufficient to describe the relaxation of the

• those given above. The main feature of these responses is their strong temperature dependence. At temperatures above the Curie temperature of the samples, they are not detectable. However, on cooling, starting from the Curie temperature, the ΔR/R(Δt) responses increase sharply. The amplitude of the fast

Temperature and chemical effects on the interfacial energy between a Ga–In–Sn eutectic liquid alloy and nanoscopic asperities

• Yujin Han,
• Pierre-Marie Thebault,
• Corentin Audes,
• Xuelin Wang,
• Haiwoong Park,
• Jian-Zhong Jiang and
• Arnaud Caron

Beilstein J. Nanotechnol. 2022, 13, 817–827, doi:10.3762/bjnano.13.72

• each dZ/dt-values, the temperature dependence of γ was fitted with the linear function γ(T) = γm + κ(T – Tm), where γm is interfacial at the melting point, κ is the temperature sensitivity of γ, and Tm is the melting point of eutectic Ga–In–Sn melt. The values of γm and κ are also shown as a function

• crystallization of the oxide layer during electron beam exposition. We measured the temperature dependence of the interfacial energy between Ga–In–Sn eutectic liquid and AFM tips by dipping the AFM tips inside a Ga–In–Sn liquid drop. The penetration depth of the tips was in the order of several hundreds of

Sodium doping in brookite TiO₂ enhances its photocatalytic activity

• Boxiang Zhuang,
• Honglong Shi,
• Honglei Zhang and
• Zeqian Zhang

Beilstein J. Nanotechnol. 2022, 13, 599–609, doi:10.3762/bjnano.13.52

• were calculated from the direct (n = 1/2) and indirect transition (n = 2), respectively. (a) The powder X-ray diffraction patterns of samples calcinated at 300–900 °C for 2 h, where the arrows indicate peaks of Na2CO3. (b) The temperature dependence of weight fractions and Na occupancy in the brookite

A chemiresistive sensor array based on polyaniline nanocomposites and machine learning classification

• Jiri Kroutil,
• Alexandr Laposa,
• Ali Ahmad,
• Jan Voves,
• Vojtech Povolny,
• Ladislav Klimsa,
• Marina Davydova and
• Miroslav Husak

Beilstein J. Nanotechnol. 2022, 13, 411–423, doi:10.3762/bjnano.13.34

• characteristics of active layers. These characteristics were examined for currents up to 200 mA and exhibit an almost linear character. Figure 4 shows the temperature dependence of the relative resistance of PANI/nanocomposite layers for different temperatures. All layers exhibit a decrease in resistance with

• the PANI. Current–voltage characteristics of active layers. Temperature dependence characteristics of active layers. Schematic diagram of the gas sensing characterizations apparatus. Gas characterization of active layers towards (a) 25 ppm of NH3, (b) 25 ppm of NO2, (c) 25 ppm of CO, (d) 250 ppm of

Impact of device design on the electronic and optoelectronic properties of integrated Ru-terpyridine complexes

• Max Mennicken,
• Sophia Katharina Peter,
• Corinna Kaulen,
• Ulrich Simon and
• Silvia Karthäuser

Beilstein J. Nanotechnol. 2022, 13, 219–229, doi:10.3762/bjnano.13.16

• for wire-to-wire hopping may become relevant, too. The absent length dependence, the linear correlation between device conductance and bias voltage, and the distinct temperature dependence of EA point to a thermally activated hopping conduction in solid-state nanowire devices. Temperature dependent I

Nanoscale friction and wear of a polymer coated with graphene

• Robin Vacher and
• Astrid S. de Wijn

Beilstein J. Nanotechnol. 2022, 13, 63–73, doi:10.3762/bjnano.13.4

• adhesion or covalent chemical bonds, would behave more like the flat graphene in our simulations and would provide additional protection. The temperature dependence of friction can potentially allow one to probe different relaxation mechanisms in the polymer [33][34]. In our previous work [23], we

• extensively investigated the temperature dependence of friction of bare PVA. However, it was not possible to extract information about specific relaxation mechanisms this way because of the dominant involvement of wear. While the graphene coating reduces wear, it does not eliminate it to a degree that we

Sputtering onto liquids: a critical review

• Anastasiya Sergievskaya,
• Adrien Chauvin and
• Stephanos Konstantinidis

Beilstein J. Nanotechnol. 2022, 13, 10–53, doi:10.3762/bjnano.13.2

Nonmonotonous temperature dependence of Shapiro steps in YBCO grain boundary junctions

• Leonid S. Revin,
• Dmitriy V. Masterov,
• Alexey E. Parafin,
• Sergey A. Pavlov and
• Andrey L. Pankratov

Beilstein J. Nanotechnol. 2021, 12, 1279–1285, doi:10.3762/bjnano.12.95

• ; Shapiro steps; temperature dependence; YBaCuO Josephson junction; Introduction High-temperature superconducting (HTSC) Josephson junctions (JJs) are of great interest since many physical properties can be observed in dynamics during the changing the temperature within a wide range from nitrogen

• between the experiment and the theory. While for low-temperature JJs the temperature dependence of the Shapiro steps is weak [27], for HTSC junctions the response to a MW signal has a general tendency to rise with decreasing temperature, but may have peculiarities for certain sample parameters [19]. In

• this paper, we investigate the temperature dependence of the first Shapiro step amplitude for an external signal with frequencies of 72 and 265 GHz acting on YBa2Cu3O7−δ 6 μm Josephson grain boundary junction. The observed non-monotonous behavior of the step height in the limit of low signal power is

Electrical, electrochemical and structural studies of a chlorine-derived ionic liquid-based polymer gel electrolyte

• Ashish Gupta,
• Amrita Jain,
• Manju Kumari and
• Santosh K. Tripathi

Beilstein J. Nanotechnol. 2021, 12, 1252–1261, doi:10.3762/bjnano.12.92

• conductivity of σ = 8.9 × 10−3 S·cm−1. The temperature dependence of the prepared polymer gel electrolytes follows the thermally activated behavior of the Vogel–Tammann–Fulcher equation. The total ionic transference number was ≈0.91 with a wider electrochemical potential window of 4.0 V for the prepared

• -HFP)-[BDiMIM][Cl]} (4:6)) (20 wt %) + [PC-Mg(ClO4)2 (0.3 M)] (80 wt %) were chosen for detailed studies. The maximum room-temperature ionic conductivity of the optimized system was found to be in the order of ≈8.9 × 10−3 S·cm−1. Figure 5 shows the temperature dependence plot of ionic liquid-based

Impact of electron–phonon coupling on electron transport through T-shaped arrangements of quantum dots in the Kondo regime

• Patryk Florków and
• Stanisław Lipiński

Beilstein J. Nanotechnol. 2021, 12, 1209–1225, doi:10.3762/bjnano.12.89

• both reflect the same phenomenon, that is, Kondo resonance on the interacting dot. We have also checked that the satellite peaks follow the same temperature dependence as the main Kondo peak. So far we have presented the conductance for occupation n = 1 only. The following figures (Figures 3–5) refer

First-principles study of the structural, optoelectronic and thermophysical properties of the π-SnSe for thermoelectric applications

• Muhammad Atif Sattar,
• Najwa Al Bouzieh,
• Maamar Benkraouda and
• Noureddine Amrane

Beilstein J. Nanotechnol. 2021, 12, 1101–1114, doi:10.3762/bjnano.12.82

• is the Grüneisen parameter [9]. We used the values of θD = 240.86 and γ = 2.1875 at 300 K in the Slack’s equation to obtain the lattice thermal conductivity. The temperature dependence of the lattice thermal conductivity for the cubic π-SnSe alloy is presented in Figure 9c. From the plot, it can be

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

• ][21]. This could lead to a weakening of superconductivity in S′ layers and, thus, may explain the appearance of the third high-resistance state between P and AP states [6]. However, there should be yet another explanation for the reported strong temperature dependence of MR, seen in Figure 2a–c

• , since the magnetic state of F-layers should not exhibit strong temperature dependence in a very narrow temperature range, in which large variation of MR are observed, see Figure 2a–c, spin-triplet mechanism alone cannot explain our observation, and the domain-triggered FF mechanism should play an

9.1% efficient zinc oxide/silicon solar cells on a 50 μm thick Si absorber

• Rafal Pietruszka,
• Bartlomiej S. Witkowski,
• Monika Ozga,
• Katarzyna Gwozdz,
• Ewa Placzek-Popko and
• Marek Godlewski

Beilstein J. Nanotechnol. 2021, 12, 766–774, doi:10.3762/bjnano.12.60

• (a, c) textured and (b, d) planar solar cells studied by SEM (top row) and AFM (bottom row). (a) External quantum efficiency and (b) current voltage characteristics of ZnO/Si solar cells. Current–voltage–temperature characteristics of (a) textured and (b) planar ZnO/Si solar cells. Temperature

• dependence of basics solar cell parameters. Growth parameters of ALD films. Basic parameters of ZnO/Si solar cells extracted from a double exponential model. Funding This work was partially supported by the National Centre for Research and Development TECHMATSTRATEG1/347431/14/NCBR/2018 (PV-BLJ-SC) and the

Nickel nanoparticle-decorated reduced graphene oxide/WO₃ nanocomposite – a promising candidate for gas sensing

• Ilka Simon,
• Alexandr Savitsky,
• Rolf Mülhaupt,
• Vladimir Pankov and
• Christoph Janiak

Beilstein J. Nanotechnol. 2021, 12, 343–353, doi:10.3762/bjnano.12.28

• Ni@rGO composite without heat treatment. The temperature dependence of the magnetization was determined during several heating–cooling cycles. It was noted that with an increase in the number of cycles, the Сurie temperature of the sample increased from 345 to 357 °C. Most likely, the increase in the

• with a noncollinear spin configuration, which causes the formation of a surface spin canting due to thermal fluctuation of magnetic moments. Figure 7 shows the temperature dependence of the magnetization obtained in the course of the last measurement cycle at which, for nickel particles, ferromagnetic

A self-powered, flexible ultra-thin Si/ZnO nanowire photodetector as full-spectrum optical sensor and pyroelectric nanogenerator

• Liang Chen,
• Jianqi Dong,
• Miao He and
• Xingfu Wang

Beilstein J. Nanotechnol. 2020, 11, 1623–1630, doi:10.3762/bjnano.11.145

• energy. This is achieved by utilizing the temperature dependence of electric displacement of polar materials, which are already applied in solar cells, photodetectors, temperature sensors, and stretchable electronics [15][16][17][18]. It means that the PENGs could serve as a power source to power PDs by

Controlling the proximity effect in a Co/Nb multilayer: the properties of electronic transport

• Sergey Bakurskiy,
• Mikhail Kupriyanov,
• Nikolay V. Klenov,
• Igor Soloviev,
• Andrey Schegolev,
• Roman Morari,
• Yury Khaydukov and
• Anatoli S. Sidorenko

Beilstein J. Nanotechnol. 2020, 11, 1336–1345, doi:10.3762/bjnano.11.118

• effective critical temperature of the magnetic superconductor is significantly smaller than of the bulk semiconductor material. This property of the system is demonstrated in Figure 3. Figure 3a presents the temperature dependence of the pair potential in different superconducting layers for P (solid lines

• ) and AP (dashed) magnetization configurations in F-layers. In the large semiconductor electrode, the temperature dependence of the pair potential coincides with the prediction of the pure Bardeen–Cooper–Schrieffer (BCS) model. At the same time, the pair potential in thin s-layers rapidly increases near

Proximity effect in [Nb(1.5 nm)/Fe(x)]₁₀/Nb(50 nm) superconductor/ferromagnet heterostructures

• Yury Khaydukov,
• Sabine Pütter,
• Laura Guasco,
• Roman Morari,
• Gideok Kim,
• Thomas Keller,
• Anatolie Sidorenko and
• Bernhard Keimer

Beilstein J. Nanotechnol. 2020, 11, 1254–1263, doi:10.3762/bjnano.11.109

• Oe. At 13 K the saturation moment increases to msat = 40 μemu and a field above Hsat ≈ 2 kOe is needed to saturate the magnetic moment of the sample. The temperature dependence of the magnetic moment at H = 250 Oe (Figure 4b) shows that the moment is constant down to T ≈ 100 K, and grows upon further

• and (b) sample s6. Dashed tilted lines show the direction of specular reflection. The color bars show the logarithmic intensity scale. SQUID data of the s3 sample. (a) Hysteresis loop measured at T = 300 K (red) and T = 13 K (black). (b) Temperature dependence of the magnetic moment measured at H