<abstract> <p>This paper derived fractional derivatives with Atangana-Baleanu, Atangana-Toufik scheme and fractal Atangana-Baleanu sense for the COVID-19 model. These are advanced techniques that provide effective results to analyze outbreak. Fixed point theory is used derive existence uniqueness of fractional-order model We also proved property boundedness positivity The technique Fractal operator Sumudu transform find reliable order Model. generalized Mittag-Leffler law...

The thermally activated flux flow effect has been studied in epitaxial FeSe0.6Te0.4 thin film grown by a PLD method through the electrical resistivity measurement under various magnetic fields for B//c and B//ab. results showed that is well described nonlinear temperature-dependent activation energy. evaluated apparent energy U0(B) one order larger than reported double-linearity both field directions. Furthermore, shows anisotropy of 5.6 near Tc 2D-like superconducting behavior region. In...

We report on the thermally activated flux flow dependency doping dependent mixed state in NaFe1-x Co x As (x = 0.01, 0.03, and 0.07) crystals using magnetoresistivity case of B//c-axis B//ab-plane. It was found clearly that irrespective ratio, showed a distinct tail just above T c,offset associated with (TAFF) our crystals. Furthermore, TAFF region temperature dependence activation energy follows relation [Formula: see text] q 1.5 all studied The magnetic field power law where exponent α is...

Abstract We investigate changes in the vortex pinning mechanism caused by proton irradiation through measurement of in-plane electrical resistivity for H // c a pristine and two proton-irradiated (total doses 1 × 10 15 16 cm −2 ) SmBa 2 Cu 3 O 7-δ (SmBCO) superconducting tapes. Even though has no effect on critical temperature ( T ), resulting artificial point defect causes an increase normal state resistivity. The data around shows evidence phase transition to glass but only broadens with...

The temperature dependence of the electric resistivity measured in various magnetic fields was analyzed by vortex glass theory and thermally activated flux motion (TAFM) theory. glass-to-vortex liquid (GTL) transition Tg obtained from analysis shows a BgT=B01-T/Tcm. region is divided into critical existing finite just above TAFM present it. In region, activation energy expressed as Ueff=kBTTc-T/(Tc-Tg), whereas activity temperature-nonlinear UT,B=U0B1-tq. GTL transition,...

The influence of proton irradiation on the fluctuation-induced magnetoconductivity high quality FeSe1−xTex (x = 0.4, 0.55) (FST) thin films has been investigated. measurements were performed with magnetic fields up to 13 T applied in two main crystal directions. results interpreted terms Ginzburg–Landau approach for three-dimensional materials under a total-energy cutoff. analysis shows that properly-tuned does not appreciably affect fundamental superconducting parameters like Tc value,...

The influence of the proton irradiation on thermally fluctuation-induced conductivity in Ca8.5La1.5(pt3As8)(Fe2As2)5 single crystal was investigatyed. in-plane magnetoconductivity measured up to H=13T. It is observed that Tc suppressed 30.3 from 32.5 K when irradiated whereas amplitude fluctuation effect almost same both samples. results were analyzed by Ullah and Dorsey scaling functions based Hartree approximation Ginzburg-Landau free energy, including critical-fluctuation regime. In...

Abstract [94pt]In this study, we have measured the optical reflectivity spectra of low‐dimensional SmNiC ( K and K) in terahertz to ultraviolet frequency range at various temperatures. The conductivity were transformed from data using Kramers–Kronig relation. normal state is well described by Drude–Lorentz model assuming two bands. In nonmagnetic states below , clean gaps opening on top Drude response are observed around 500 750 cm −1 . ferromagnetic state, higher‐side gap remains same but...

The progress in computation power has motivated neural network based solutions a diverse area of study. Partial discharges (PD) detection is very old challenge for operators. An efficient time PD helps reliable supply to the cities and secure infrastructure. This paper proposes pattern analysis fault line using Long Short Term deep learning method Medium Voltage(MV) Overhead Covered Conductor(OCC). tested on real dataset provided by ENET centre VSB, which largest known available open source....

We measured the optical reflectivity R(ω) for an underdoped (Ca0.935La0.065)10(Pt3As8)(Fe2As2)5 single crystal and obtained conductivity [Formula: see text] using K-K transformation. The normal state at 30 K is well fitted by a Drude-Lorentz model with two Drude components (ωp1 = 1446 cm-1 ωp2 6322 cm-1) seven Lorentz components. Relative reflectometry was used to accurately determine temperature dependence of superconducting gap various temperatures below Tc. results clearly show opening...

We investigate the doping dependence of flux pinning in superconducting NaFeCoxAs (x = 0.01, 0.03, 0.05 and 0.07) single crystals grown by Bridgman method. The electronic specific heat displays a pronounced anomaly sample series at transition temperature, which hardly shows any residual part low temperature. found that Co plays an important role signifying secondary peak magnetic hysteresis optimally doped 0.03) heavily 0.05, crystals. Furthermore, relaxation rate S ∣d ln M/d t∣ on field...

The reversible magnetization curves for various magnetic fields are investigated a single crystal of the optimally doped NaFe0.97Co0.03As superconductor with superconducting transition temperature Tc?=?20.9 K (?(T)?=?0) in case where H is parallel to c-axis. A well-formed rounding effect observed dependence magnetization, and it widens on increasing strength applied fields. At 20.2 K, we observe crossing M(T) different fields, indicating important fluctuation effects. irreversibility line...

The research on oxide semiconductor thin-film transistors (OSTFTs) is experiencing exponential growth worldwide, aimed at enhancing the mobility, stability, film quality, and device performance while reducing density of defect states in channel material. In our study, we investigated indium aluminum zinc (IAZO) films with varying O2 flow rates 25, 17, 8, 3 sccm to optimize Interestingly, observed that as rate decreased, deposition increased exponentially. However, when was set sccm,...

We investigate thermal fluctuations in terms of diamagnetism and magnetotransport superconducting NaFe1-xCo x As single crystals with different doping levels. Results show that the case optimal doped lightly overdoped (x = 0.03, 0.05) analysis critical as well Gaussian fluctuation regions is consistent Ginzburg-Landau 3D theory. However, strongly samples ≥ 0.07) Ullah-Dorsey scaling induced magnetoconductivity region confirms exhibit a anisotropic nature only narrow temperature around T c...

We present the magnetic properties of iron based superconducting Ca10(Pt4As8)(Fe2-xPtxAs2)5 (x =0.01) single crystal as a function field and time. The crystals were grown by Bridgman method showed Tc 32 K. results show that well-known secondary peak effect becomes prominent in certain temperature range dependent hysteresis. Moreover, maximum pinning force density Fmax versus Hmax follows scaling law Fp,max ≈ 49.5Hmax3/2 indicating type mechanism is involved sample within our measured range....

We report on the thermally activated flux flow dependency doping dependent mixed state in NaFe1-xCoxAs (x=0.01, 0.03, and 0.07) crystals using magnetoresistivity case of B//c-axis B//ab-plane. It was found clearly that irrespective ratio, showed a distinct tail just above Tc, offset associated with (TAFF) our crystals. Furthermore, TAFF region temperature dependence activation energy follows relation U(T, B)=U_0 (B) (1-T/T_c )^q q=1.5 all studied The magnetic field power law U_0...