Solid State Communications最新文献

{"title":"Selective IR wavelengths multichannel filter based on the one-dimensional topological photonic crystals comprising hyperbolic metamaterial","authors":"Abdulkarem H.M. Almawgani ,&nbsp;Aliaa G. Mohamed ,&nbsp;Ali Hajjiah ,&nbsp;Haifa A. Alqhtani ,&nbsp;May Bin-Jumah ,&nbsp;Arafa H. Aly ,&nbsp;Wail Al Zoubi ,&nbsp;Mostafa R. Abukhadra ,&nbsp;Ahmed Mehaney ,&nbsp;Hussein A. Elsayed","doi":"10.1016/j.ssc.2024.115735","DOIUrl":"10.1016/j.ssc.2024.115735","url":null,"abstract":"<div><div>In this research article, we have theoretically introduced a one-dimensional topological photonic crystal (1D TPC) design to provide a better stability due to imperfections and fluctuations in geometry compared to the traditional PC structures. The considered structure is designed by the combination of two different PCs, i.e., PC₁ and PC₂. PC₁ consists of two layers of silicon (Si) and magnesium fluoride (MgF₂), while PC₂ contains a multilayer stack of MgF₂ and hyperbolic metamaterial (HMM). Interestingly, the HMM layer is introduced as a composite of a dielectric material of indium arsenide (InAs), and nanocomposite of Ag nanoparticles inside a hosting medium of Y₂O₃. The foundations of our theoretical framework are based on Effective Medium Theory (EMT), the Transfer Matrix Method (TMM), and the Maxwell-Garnett model. Our research primarily focuses on utilizing our design as a pass/stop band filter for near-infrared (NIR) applications. Notably, this proposed design exhibits significant stability in the face of imperfections and variations. Our numerical findings highlight the influence of several geometric parameters including the refractive index of hosting medium for Ag nanoparticles, thicknesses, and filling fraction on the characteristics of the resulting filter. Remarkably, the results also reveal the emergence of multiple resonance peaks that maintain high stability against geometric tolerances. We believe our work presents a finite photonic crystal (PC) whose wave localization properties are resilient to random geometric imperfections, making it suitable for NIR filtering applications.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"395 ","pages":"Article 115735"},"PeriodicalIF":2.1,"publicationDate":"2024-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142578649","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modification of Majorana leakage effect due to the presence of quantum interference","authors":"Chuan-Jing Yang ,&nbsp;Li-Hui Jin ,&nbsp;Xue-Feng Dai ,&nbsp;Wei-Jiang Gong","doi":"10.1016/j.ssc.2024.115724","DOIUrl":"10.1016/j.ssc.2024.115724","url":null,"abstract":"<div><div>This study delves into the Majorana leakage effect modified by the quantum interference, by coupling one Majorana zero mode (MZM) simultaneously to two dots in a double-quantum-dot Aharonov-Bohm interferometer device. Our findings reveal that the Majorana leakage effect significantly diverges from the single-dot case, predominantly influenced by the symmetry properties of the arms of the interferometer. Remarkably, with identical arms, the Majorana leakage effect halves the low-bias conductance magnitude for magnetic flux phase factor <span><math><mrow><mi>ϕ</mi><mo>≠</mo><mn>2</mn><mi>n</mi><mi>π</mi></mrow></math></span> (<span><math><mrow><mi>n</mi><mo>∈</mo><mi>Integer</mi></mrow></math></span>). In contrast, when inter-arm symmetry is disrupted, this halving phenomenon is restricted to instances where <span><math><mrow><mi>ϕ</mi><mo>=</mo><mn>2</mn><mi>n</mi><mi>π</mi></mrow></math></span>, accompanied by a <span><math><mrow><mn>4</mn><mi>π</mi></mrow></math></span>-periodic variation in low-bias conductances. Consequently, the Majorana leakage effect is intricately tied to the quantum interference patterns, offering insights into the quantum coherence and transport in hybrid superconducting systems.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"395 ","pages":"Article 115724"},"PeriodicalIF":2.1,"publicationDate":"2024-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142528117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Strain-tuned structural, optoelectronic and dielectric properties of cubic MAPbI3 perovskite driven by SOC using first-principles theory","authors":"Tamanna Binte Rahman ,&nbsp;Md Mustafizur Rahman ,&nbsp;SM Amir-Al Zumahi ,&nbsp;Md Rasidul Islam ,&nbsp;M Mahbubur Rahman","doi":"10.1016/j.ssc.2024.115728","DOIUrl":"10.1016/j.ssc.2024.115728","url":null,"abstract":"<div><div>In this report, we used first-principles density functional theory calculations to investigate the effect of compressive and tensile strains ranging from −6% to +6 % on the consideration of structural, optical, and electronic properties of CH₃NH₃PbI₃ (Methylammonium lead triiodide, hereafter MAPbI₃) perovskite. At the R-point of electronic band structures, the unstrained planar CH₃NH₃PbI₃ molecule exhibited a direct electronic bandgap of 1.6744 eV and 0.5187 eV without and with spin-orbit coupling (SOC) effect, respectively. Due to the SOC effect, the bandgap of CH₃NH₃PbI₃ perovskite increased as the tensile strains rose. On the contrary, the bandgap decreases with increasing compressive strains. The density of states (DOS) and projected density of states (PDOS)/total density of states (TDOS) described that the valence bands and the conduction bands of MAPbI₃ perovskite are controlled by I-p orbitals and Pb-p orbitals, respectively. The CH₃NH₃PbI₃ perovskite also has strong absorption capabilities in the photon energy region of 2 eV–2.75 eV, as evidenced by the optical studies. The main peak of the dielectric function shifts toward the lower photon energies with increasing compressive strains (redshift effect). However, the dielectric function peaks were blue-shifted by incorporating the tensile strains. The study exposed that SOC significantly modifies the electronic band structure, leading to modifications in phenomena of the perovskite structure. Furthermore, SOC-induced changes in the dielectric response highlight its role in shaping the material's characteristics. This comprehensive investigation provided fundamental insights into the potential manipulation of MAPbI₃ perovskite for enhanced device performance in photovoltaic and optoelectronic applications.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115728"},"PeriodicalIF":2.1,"publicationDate":"2024-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"GGA+U study the effects of strains on magnetism, elastic properties and electronic structures of Heusler alloy Pd2FeCu","authors":"Chengwei Lu,&nbsp;S.W. Fan","doi":"10.1016/j.ssc.2024.115727","DOIUrl":"10.1016/j.ssc.2024.115727","url":null,"abstract":"<div><div>The effect of strains on electronic structures, elastic properties, magnetic properties and Curie temperature of Pd₂FeCu are calculated by GGA + U method. The impact of strains on the magnetism of Pd₂FeCu is evaluated. The magnetism without and with spin-orbit coupling (SOC) effect under diverse strain are examined. The results show that Pd₂FeCu is a ferromagnetic metal with good ductility and mechanical stability. The SOC effect has a negligible impact on the atomic magnetic moment of Pd₂FeCu. When the compressive and tensile strains are imposed, the ferromagnetic metal properties still keep, and the Curie temperature of Pd₂FeCu is higher than room temperature. The ferromagnetism for Pd₂FeCu is very robust with respect to the variation of the strain. And the Ruderman-Kittel-Kasuya-Yoshida (RKKY) type ferromagnetic interaction play a crucial role to determine the ferromagnetism. We expect this work could stimulate experimental study.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115727"},"PeriodicalIF":2.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142536190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Electrical properties of completely compensated single-crystal Ge-on-GaAs films with two-dimension Coulomb disorder","authors":"V.F. Mitin","doi":"10.1016/j.ssc.2024.115726","DOIUrl":"10.1016/j.ssc.2024.115726","url":null,"abstract":"<div><div>We present electrical properties of heavily doped and completely compensated Ge films grown on semiinsulating GaAs(100) substrates by vacuum evaporation. The thin (∼100 nm) Ge films are single-crystal and characterized using temperature-dependent transport measurements, with anomalously large activation energy up to half the Ge bandgap, anisotropy of the transverse magnetoresistance, high resistivity (up to 140 Ω cm), low free charge carrier mobility (∼50 cm²/V·s), and concentration (∼10¹⁴–10¹⁵ cm⁻³). This behaviour is attributed to a completely compensated semiconductors arising from Ga and As impurity incorporation and large-scale potential fluctuations. Analysis suggests a two-dimensional percolative transport mechanism in Ge-on-GaAs heterostructures.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115726"},"PeriodicalIF":2.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of rare earth ions on the optical and electronic properties of defect chalcopyrite: Experimental and theoretical investigation","authors":"S.G. Asadullayeva ,&nbsp;N.A. Ismayilova","doi":"10.1016/j.ssc.2024.115725","DOIUrl":"10.1016/j.ssc.2024.115725","url":null,"abstract":"<div><div>The present research is a systematic experimental and computational study focused on structural, electronic, and optical properties of ZnGa₂S₄ doped with neodymium rare earth ions for the first time. High-intensity, narrow-band luminescence peaks are observed in the visible and infrared regions by doping the matrix with Nd ions. These peaks in the background of the broadband spectrum are due to intercenter 4f-4f transitions of Nd³⁺ ions. The fact that the Raman peaks of the alloy crystal are more intense than that of the pure crystal confirms that the neodymium does not move freely in the lattice and occupies the place of defects. This confirms the results from our X-ray structural analysis. The crystal lattice parameters of the studied materials were determined as follows: a = 5.496 <em>Å</em>, c = 10.99 <em>Å</em>, c/a = 2. To explain the electronic, optical and magnetic properties, using ATK-DFT method, electronic energy band structure, density of states and optical spectrum for pure and doped with ZnGa₂S₄:Nd compound are computed and discussed. DFT result shows that impurity Nd leads to a decreased bandgap of ZnGa₂S₄ due to the hybridization of Nd-4d with S-3p orbital in the forbidden gap. The peaks in the optical spectrum are shifted toward the lower energy range for doped supercell.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115725"},"PeriodicalIF":2.1,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142444970","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intrinsic Josephson junction characteristics of Nd2-xCexCuO4 /SrTiO3 epitaxial films","authors":"T.B. Charikova ,&nbsp;D.I. Devyaterikov ,&nbsp;V.N. Neverov ,&nbsp;M.R. Popov ,&nbsp;N.G. Shelushinina ,&nbsp;A.A. Ivanov","doi":"10.1016/j.ssc.2024.115723","DOIUrl":"10.1016/j.ssc.2024.115723","url":null,"abstract":"<div><div>The current-voltage (<em>I</em>-<em>V</em>) properties along the <em>c</em> axis on Nd_2-<em>x</em>Ce_<em>x</em>CuO₄/SrTiO₃ epitaxial films with <em>x</em> = 0.145, 0.15 were investigated. For all the samples it has been established that the <em>I-V</em> characteristics exhibit several resistive branches, which correspond to the resistive states of individual Josephson junctions. The results confirm the idea of a tunneling mechanism between the CuO₂ layers (superconductor - insulator - superconductor junction) for the investigated Nd_2-<em>x</em>Ce_<em>x</em>CuO₄ compound. The <em>I</em>-<em>V</em> dependence of this compound with <em>x</em> = 0.15 points out on the nonmonotonic nature of the d-wave or anisotropic <em>s</em>-wave symmetry order parameter associated with the coexistence of superconductivity and antiferromagnetic fluctuations.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115723"},"PeriodicalIF":2.1,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cs/O, Cs/NF3, and Cs/Li/NF3 coadsorption on GaAs0.5P0.5 (001) β2(2×4) reconstruction surface: A first principle study","authors":"Jingwen Liu ,&nbsp;Mingzhu Yang ,&nbsp;Siyi He","doi":"10.1016/j.ssc.2024.115711","DOIUrl":"10.1016/j.ssc.2024.115711","url":null,"abstract":"<div><div>The activation process of p-type doped GaAs_0.5P_0.5 (001) <em>β</em>₂(2 × 4) reconstruction surface is investigated based on first principle calculations. For Cs-only adsorption, the adsorption energy rises as the Cs coverage increases, and when the Cs coverage is at 0.75 ML, the work function hits its minimum. Cs/O and Cs/NF₃ concurrent adsorption are conducive to increasing steadiness and lowering the work function of the reconstruction surface during the phase of high Cs coverage. The work function reaches its minimum when Cs coverage is 0.75 ML in Cs/O coadsorbed models while that occurs when Cs coverage is 1.00 ML in Cs/NF₃ coadsorbed models. Results indicate that the Li atoms intercalation with low coverage in Cs/NF₃ coadsorbed models is conducive to establishing dipole moments, strengthening stability, and lowering the work function. The optimal adsorption recipe is 6Cs/2Li/NF₃, with which the surface owns the lowest work function and shows the most stable property.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115711"},"PeriodicalIF":2.1,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hysteresis behavior and magnetocaloric effect in MnNiGa2 full-Heusler alloy","authors":"H. Kerrai ,&nbsp;H. Saadi ,&nbsp;E.M. Jalal ,&nbsp;M. Kerouad ,&nbsp;A. Zaim","doi":"10.1016/j.ssc.2024.115717","DOIUrl":"10.1016/j.ssc.2024.115717","url":null,"abstract":"<div><div>In this manuscript, we studied the magnetic, magnetocaloric, and hysteresis properties of the MnNiGa<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> full-Heusler alloy using mean-field theory and first-principles calculations. Initially, we employed the GGA+U method to investigate the structural characteristics of the alloy. Our findings indicated that the ferromagnetic state, with an optimal lattice parameter of 5.88 Å, was the most stable compared to the antiferromagnetic states. Additionally, the exchange interactions, defined as the Hamiltonian parameters of the studied system, were calculated and used in the mean-field approximation. The second-order transition at a Curie temperature of T<span><math><msub><mrow></mrow><mrow><mi>c</mi></mrow></msub></math></span> = 373 K, previously revealed experimentally, has been confirmed. Furthermore, the alloy exhibited a relative cooling power (RCP) of 260.43 J/kg and a magnetocaloric effect of 10.34 J/kg.K at an applied magnetic field of 1.4 T. These results suggest that MnNiGa<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span> is a promising candidate for magnetic refrigeration applications.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115717"},"PeriodicalIF":2.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142434148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of CuF2 on Li+ transport in amorphous PEO-based solid polymer electrolytes","authors":"Sanqi Guo,&nbsp;Faqiang Li,&nbsp;Bo Xu,&nbsp;Dinggen Li","doi":"10.1016/j.ssc.2024.115722","DOIUrl":"10.1016/j.ssc.2024.115722","url":null,"abstract":"<div><div>The limited Li⁺ transport capacity of poly(ethylene oxide) (PEO)-based solid polymer electrolytes restricts their practical applications. To enhance the Li⁺ diffusion coefficient, CuF₂ was incorporated. Molecular dynamics simulations were performed on LiTFSI/PEO systems and CuF₂/LiTFSI/PEO systems at varying lithium salt concentrations. The findings indicate that the inclusion of CuF₂ in LiTFSI/PEO systems with high lithium salt concentration enhances the Li⁺ diffusion coefficient, whereas it diminishes at low lithium salt concentration. This phenomenon is attributed to the abundant coordination properties of Cu²⁺.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"394 ","pages":"Article 115722"},"PeriodicalIF":2.1,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142427781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}