Physics of the Solid State最新文献

{"title":"Transient Nature of the Relaxation Process with Very Short Relaxation Times in Cu–Zr Metallic Glass: Comparison of MACE and EAM in MD-DMS Modeling","authors":"K. A. Tenikov,&nbsp;A. S. Kochkin,&nbsp;M. D. Starostenkov","doi":"10.1134/S1063783426603000","DOIUrl":"10.1134/S1063783426603000","url":null,"abstract":"<p>The fast mechanical response of Cu64Zr36 metallic glass at 300 K is studied using molecular-dynamics dynamical mechanical spectroscopy (MD-DMS). A validated DFT-trained MACE potential is compared with a classical EAM potential under the same oscillatory shear protocol. For each potential, five independent glass realizations are examined at periods of 20 and 50 ps (50 and 20 GHz, respectively) and a strain amplitude of 1%. Positive <i>G</i>'' and <span>(tan delta )</span> are obtained in all 20 simulations. For MACE, the mean <i>G</i>'' values ± sample standard deviation are 1.30 ± 0.40 and 1.33 ± 0.42 GPa at periods of 20 and 50 ps; the corresponding EAM values are 1.75 ± 0.60 and 1.55 ± 0.20 GPa. Mean <i>G</i> ' values lie between 17.49 and 18.49 GPa. Quantitative <span>(D_{{{text{min}}}}^{2})</span> analysis gives an active-atom fraction of 3.39–3.42% for MACE and 2.18–2.32% for EAM using the threshold <span>(D_{{{text{min}}}}^{2})</span> &gt; 8 Ų. About 80% of the active atoms are Cu, whereas the overall atomic Cu fraction in the glass is 64%. The cycle-wise relation between <i>G</i> '' and the active-atom fraction depends on the realization and period and is not one-to-one. The results show that a fast dissipative component persists after replacing EAM with MACE within the investigated frequency window. They do not, however, establish a fully frequency-independent NCL plateau.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"1010 - 1019"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022998","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":"Comparative Study of Tetracycline Hydrochloride Degradation in UV-Based Advanced Oxidation Processes","authors":"T. Isac-Gutul,&nbsp;E. Tutovan,&nbsp;D. L. Nika","doi":"10.1134/S106378342660370X","DOIUrl":"10.1134/S106378342660370X","url":null,"abstract":"<p>Tetracyclines represents a widely used class of antibiotics and are frequently detected in aquatic environments, where their persistence contributes to the development of antibiotic resistance and ecological risks. This study presents a kinetic investigation of tetracycline hydrochloride (TCH) photodegradation in homogeneous aqueous media using the following UV-based advanced oxidation processes (AOPs): UV, UV/H₂O₂, UV/S₂O<span>(_{8}^{{2 - }})</span>, UV/Fe²⁺/H₂O₂ (photo-Fenton), and UV/Fe²⁺/ S₂O<span>(_{8}^{{2 - }})</span> (Fe²⁺-activated persulfate). The effects of oxidant concentration, catalyst dosage, initial TCH concentration, pH, and temperature were evaluated, and the degradation kinetics were analyzed. Direct UV irradiation with the high-pressure mercury lamp DRT-1000 resulted in degradation efficiencies of 41.8–81.1% after 60 min, with apparent rate constants ranging from 0.0051 to 0.0272 min^–1, described by the pseudo-first-order model. The addition of H₂O₂ increased the degradation efficiency to 98.04%<b>,</b> while the apparent rate constants increased to 0.0342–0.0744 min^–1. In the UV/S₂O<span>(_{8}^{{2 - }})</span> system, degradation efficiencies reached 99.66%, with apparent rate constants ranging from 0.0241 to 0.1383 min^–1 demonstrating the high oxidative potential of sulfate radicals. The photo-Fenton process achieved nearly complete TCH degradation within a substantially shorter reaction time, exhibiting apparent rate constants of 0.0398–0.0814 min^–1. The UV/Fe²⁺/S₂O<span>(_{8}^{{2 - }})</span> system exhibited the fastest degradation kinetics owing to the catalytic activation of persulfate by Fe²⁺, which promoted the continuous generation of sulfate anion-radicals and hydroxyl radicals. The highest apparent first-order apparent rate constant (0.144 min^–1) was obtained at pH 2.6, confirming that acidic conditions favor Fe²⁺-activated persulfate oxidation. Overall, the addition of Fe²⁺ significantly accelerated persulfate activation, resulting in higher reaction rates than those obtained in the UV/S₂O<span>(_{8}^{{2 - }})</span> system. The results demonstrate that the UV/Fe²⁺/S₂O<span>(_{8}^{{2 - }})</span> and photo-Fenton systems are the most effective UV-based advanced oxidation processes for the rapid degradation of tetracycline hydrochloride can be used for the treatment of TCH-contaminated water.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"966 - 980"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023121","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":"Energy Distribution of Sputtered Atomic Structures","authors":"E. R. Burmistrov,&nbsp;V. A. Parshin,&nbsp;D. A. Senetskaya,&nbsp;N. V. Morozova,&nbsp;Yu. V. Fomina,&nbsp;D. Yu. Ryazanov,&nbsp;S. N. Gavrilin","doi":"10.1134/S1063783426603279","DOIUrl":"10.1134/S1063783426603279","url":null,"abstract":"<p>The process of energy exchange upon interaction of an ion beam with a solid surface is considered within the framework of a pairwise interaction model under ion sputtering. The multifactorial nature of this process is noted, as well as existing controversies in the literature regarding the energy dependence of the ionization probability of sputtered particles and the interpretation of their energy distributions. A quantum-wave approach is proposed to describe the ejected particle as a wave packet using de Broglie waves. Based on perturbation theory and the Heisenberg uncertainty principle, an analytical dependence is derived that relates the energy width of the secondary particle spectrum to the mass ratio of the incident ion and the ejected atom, the bombardment energy, and the geometric size of the exchange region.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"1003 - 1009"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023126","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":"Colossal Magnetoresistance and Heavy Fermions in Eu0.9Yb0.1B6 System","authors":"M. Anisimov,&nbsp;A. Bogach,&nbsp;V. Voronov,&nbsp;V. Glushkov","doi":"10.1134/S1063783426601347","DOIUrl":"10.1134/S1063783426601347","url":null,"abstract":"<p>Current work presents the study of transport characteristics [resistivity, transverse magnetoresistance (TMR), Hall effect] of a high-quality polycrystalline sample of Eu_0<i>.</i>9Yb_0<i>.</i>1B₆ compound in the temperature range of 2–300 K, in magnetic fields up to 8 T. The obtained data confirm the realization in Eu_0<i>.</i>9Yb_0<i>.</i>1B₆ of a state with electronic and magnetic phase separation (EMPS), which is typical for parent europium hexaboride. For EMPS the “metallization” of the system (<i>T</i>_<i>M</i> ≈ 15 K) precedes ferromagnetic (FM) ordering (<i>T</i>_C ≈ 11.4 K). In the temperature range <i>T</i>_C−<i>T</i>_<i>M</i>, the enhancement of the colossal magnetoresistance (CMR) effect was detected. It was registered that a maximum value of –∆ρ/ρ ≈ 89% is achieved at <i>T</i>_<i>M</i> point. The analysis performed allows estimating the effective mass of the electrons as <span>({{m}_{e}}{text{*}})</span> ≈ 0.9–20<i>m</i>₀, which confirms the formation of heavy fermions in the paramagnetic (PM) phase of Eu_0<i>.</i>9Yb_0<i>.</i>1B₆. To explain mentioned effects the polaronic scenario is proposed.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"913 - 917"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023084","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":"Role of Strain in Modulation of Electronic and Thermoelectric Properties of Monolayer InSe Formed by Substitution of Same Group Atoms: First-Principles Study","authors":"Nam-Chol Ri,&nbsp;Song-Jin Kim,&nbsp;Sung-Chol Han,&nbsp;Chang-Il Kim","doi":"10.1134/S1063783426601359","DOIUrl":"10.1134/S1063783426601359","url":null,"abstract":"<p>By using first-principles calculation, we theoretically investigate concurrent effect of possible four ingredient composition way formed by same group atomic substitution in monolayer InSe and strain on modulation of the electronic and thermoelectric performance. Based on the decrease results of lattice thermal conductivity by incorporation composition of same group atoms, we focus on the effect of strain on the thermoelectric power factor of four component monochalcogenides composed of group IIIB (Al, Ga, In) and chalcogens, group VIB (Se, Te). We found that under strain all systems are structurally stable and TeGaInSe system have the largest band gap of about 2 eV. Interestingly, 5<i>p</i>-orbital of Te atoms play important role to modulate the electronic properties. In addition, the band gaps of four component systems are decreased with increasing tensile strain, while compressive strain plays role to make most of systems as metallic. The calculated thermoelectric results reveal that under 8% strain, hybrid systems have remarkable enhanced power factors than 0% and pristine InSe. These results can be useful to “the phonon-glass electron-crystal” (PGEC) searching and application of the thermoelectric devices based on InSe materials.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"1020 - 1028"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023124","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":"Phonon and Elastic Properties of TlIn3S5 Crystals: Experiment and Calculations from First Principles","authors":"T. G. Mammadov,&nbsp;Z. A. Jahangirli,&nbsp;A. I. Najafov,&nbsp;Yu. A. Abdullayev,&nbsp;V. B. Aliyeva,&nbsp;Z. I. Badalova,&nbsp;I. R. Amiraslanov,&nbsp;N. A. Abdullayev","doi":"10.1134/S1063783426603127","DOIUrl":"10.1134/S1063783426603127","url":null,"abstract":"<p>Phonon properties of monoclinic TlIn₃S₅ crystals were studied using density functional perturbation theory and Raman spectroscopy methods. The dispersion of phonon modes, partial densities of states and frequencies of optical phonons in the center of the Brillouin zone were calculated, showing good agreement with experiment. All 13 elastic constants are determined from first principles, and the lattice stability criteria are shown to be met. The elastic moduli, Poisson’s ratio, acoustic wave velocities, Debye temperature and Grüneisen parameter were calculated. In the range of 0–400 K, temperature dependences of a number of thermodynamic functions of the compound were obtained.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"935 - 945"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149022999","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":"Photoluminescence of ZnO Nanopowders Doped with Ag Impurity","authors":"T. Goglidze,&nbsp;E. Goncearenco,&nbsp;N. Nedeoglo,&nbsp;V. Sirkeli,&nbsp;D. Nedeoglo","doi":"10.1134/S1063783426603644","DOIUrl":"10.1134/S1063783426603644","url":null,"abstract":"<p>The photoluminescence (PL) properties of Ag-doped ZnO nanopowders prepared by aqueous chemical deposition were investigated at room temperature. PL spectra were recorded over the 360–750 nm spectral range using excitation wavelengths from 250 to 750 nm. A pronounced ultraviolet emission centered at 380 nm is attributed to Ag_Zn acceptor-bound excitons. In addition to the near-band-edge emission, broad visible PL bands were detected, originating from radiative recombination through donor–acceptor pair transitions. The spectral distribution of the photoluminescence strongly depends on the excitation wavelength. As the excitation energy decreases, the intensity of the short-wavelength violet emission is suppressed, whereas the broad green/yellow/orange emission centered near 570 nm becomes increasingly dominant. This behavior is interpreted in terms of reabsorption of the higher-energy violet luminescence followed by energy transfer to defect-related recombination centers responsible for the broad visible PL band. A pronounced reduction in the overall photoluminescence intensity was observed for the sample containing the highest silver concentration. This reduction is attributed to a lower concentration of optically active Ag_Zn centers caused by the formation of a secondary silver oxide phase, which decreases the amount of substitutionally incorporated silver in the ZnO lattice. Under long-wavelength excitation, anti-Stokes luminescence is observed, which is attributed to sensitization of the corresponding luminescence centers.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"906 - 912"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023086","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":"First-Principles Design of 3d Transition-Metal-Doped GaP Nanosheets for Multifunctional Spintronic and Optoelectronic Devices","authors":"N. Ismailova,&nbsp;V. Aliyeva,&nbsp;J. Guliyev,&nbsp;S. Zeynalova","doi":"10.1134/S1063783426603152","DOIUrl":"10.1134/S1063783426603152","url":null,"abstract":"<p>Spin-resolved first-principles calculations show that substitutional incorporation of 3d transition metals provides a powerful way to reconfigure the properties of a GaP monolayer. In contrast to pristine GaP, which is a nonmagnetic indirect-gap semiconductor, the V-, Cr-, Mn-, Fe-, Co-, and Cu-doped systems develop localized <i>d</i>-derived states and pronounced spin asymmetry. The Mn-doped sheet exhibits the highest magnetic moment, reaching 5.58 μB at 6.25% concentration. Cr, Co, and Cu induce half-metallic behavior, whereas V, Mn, and Fe preserve semiconducting character with unequal gaps in the two spin channels. These results highlight transition-metal doping as an efficient route for tailoring monolayer GaP toward spintronic and visible-to-near-infrared optoelectronic applications.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"981 - 989"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023122","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":"Tailoring the Optical Properties of MOCVD Grown InGaAs/InAlGaAs MQWs with GaAs Insertion‑Layer","authors":"Wenzhuo Li,&nbsp;Tong Zhou,&nbsp;Haizhu Wang,&nbsp;Dengkui Wang,&nbsp;Ruiliang Xu,&nbsp;Xiyao Fu,&nbsp;Zungui Ke,&nbsp;Yue Li,&nbsp;Xiaohui Ma","doi":"10.1134/S1063783426601992","DOIUrl":"10.1134/S1063783426601992","url":null,"abstract":"<p>InGaAs/InAlGaAs multiple quantum wells (MQWs) are widely adoped as the active region of near‑infrared semiconductor lasers due to their excellent optical performance and broad application prospects. In this work, we systematically investigate the effects of the thickness of a GaAs insertion layer (ISL) on the photoluminescence (PL) behavior and defect-associated carrier recombination dynamics of InGaAs/InAlGaAs MQWs. Through comprehensive structural characterization and temperature- and power-dependent PL spectroscopy, we demonstrate that a 2 nm-thick GaAs ISL provides optimal optical performance. All measured samples exhibit a distinctive S-shaped temperature evolution of the PL peak energy, a characteristic feature arising from carrier thermal redistribution among defect-induced localized states. Notably, the sample with a 2 nm GaAs ISL shows significantly suppressed localized states, accompanied by drastically improved radiative efficiency and overall crystal quality. These findings offer essential guidance for defect-aware structural design and performance optimization of InGaAs/InAlGaAs MQW heterostructures integrated with GaAs ISLs.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"918 - 926"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023125","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":"A Deterministic Ultra-Low-Latency Fiber Transport Architecture for High-Capacity Real-Time Communication Systems","authors":"V. P. Sirkeli","doi":"10.1134/S1063783426603656","DOIUrl":"10.1134/S1063783426603656","url":null,"abstract":"<p>Professional real-time audio transport systems require deterministic latency, sample-accurate synchronization, high channel capacity, and predictable network behavior while maintaining extremely low processing delay. Existing synchronous transport technologies provide deterministic operation but offer limited architectural flexibility and limited extensibility for future services. This paper presents a deterministic ultra-low-latency streaming transport architecture for professional optical audio networks implemented over an 8G Fibre Channel physical layer. The proposed system employs a fixed Streaming Transport Frame synchronized to the audio sampling period together with a Streaming Forwarding Pipeline implementing cut-through forwarding without packet buffering, dynamic routing, or queue management. The transport architecture supports 768 channels of 32-bit PCM audio sampled at 192 kHz while maintaining a deterministic forwarding latency of approximately 115–185 ns per transport node. Audio transport, synchronization, management information, and auxiliary communication are integrated within a single Deterministic Timing Domain through fixed-position Audio Slots, configurable Hybrid Slots, and dedicated Service Tunnels. Analytical latency modeling demonstrates that forwarding latency depends exclusively on the depth of the deterministic hardware pipeline and is independent of both frame length and transported channel count. The overall network latency is dominated by light propagation in the optical fiber, a solid-state dielectric medium with highly stable refractive properties, which guarantees deterministic timing across the network. The proposed architecture establishes a scalable foundation for next-generation deterministic professional audio transport while preserving identical forwarding principles for future higher-speed physical-layer implementations.</p>","PeriodicalId":731,"journal":{"name":"Physics of the Solid State","volume":"68 11","pages":"990 - 1002"},"PeriodicalIF":2.4,"publicationDate":"2026-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149023089","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}