The European Physical Journal B最新文献

The role of predictive effect in lattice model incorporating traffic jerk effect

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-04-01 DOI: 10.1140/epjb/s10051-025-00902-9

Daljeet Kaur, Sandra C Unni, Mohit Yadav

{"title":"The role of predictive effect in lattice model incorporating traffic jerk effect","authors":"Daljeet Kaur, Sandra C Unni, Mohit Yadav","doi":"10.1140/epjb/s10051-025-00902-9","DOIUrl":"10.1140/epjb/s10051-025-00902-9","url":null,"abstract":"<p>In traffic networks, the intricate traffic congestion is the result of the abrupt deceleration and acceleration of non-motor vehicles that react by observing downstream situations. Furthermore, as information technology (IT) continues to grow and evolve, drivers can now obtain a precise assessment of the present status of real-time traffic on a prior basis. The traffic congestion that occurs due to traffic jerks may be minimized with the use of prior information (known as the predictive effect). To assess the impact of the predictive effect and traffic jerk effect on homogeneous vehicular flow, an extended lattice hydrodynamic model is proposed. Linear and nonlinear stability analysis is used to investigate the proposed model theoretically. The approach of reductive perturbation is used to derive the modified Korteweg–de Vries (mKdV) equation. Density waves in the structure of kink–antikink soliton waves around the critical point are formed. Further, numerical simulations are carried out to validate the theoretical predictions, confirming that incorporating the predictive effect into a traffic system may decrease traffic congestion more efficiently.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143740674","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}

引用次数: 0

Stability, photovoltaic, and optoelectronic properties of eco-friendly (CsGeCl_{3-n}F_n) halide perovskite for solar cells applications: insights from DFT calculations

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-28 DOI: 10.1140/epjb/s10051-025-00895-5

J. Islah, E. Darkaoui, A. Abbassi, S. Taj, B. Manaut, H. Ez-Zahraouy

{"title":"Stability, photovoltaic, and optoelectronic properties of eco-friendly (CsGeCl_{3-n}F_n) halide perovskite for solar cells applications: insights from DFT calculations","authors":"J. Islah, E. Darkaoui, A. Abbassi, S. Taj, B. Manaut, H. Ez-Zahraouy","doi":"10.1140/epjb/s10051-025-00895-5","DOIUrl":"10.1140/epjb/s10051-025-00895-5","url":null,"abstract":"<p>This study explores the characteristics of fluorine-substituted lead-free halide perovskites <span>(CsGeCl_{3-n}F_n)</span> for clean energy applications, focusing on their structural, stability, and optoelectronic characteristics. Density functional theory (DFT) calculations, using Quantum Espresso code (QE), were performed to assess the material performance of the <span>(CsGeCl_{3-n}F_n)</span> series (<span>(n=0,1,2,3)</span>). The results reveal that fluorine substitution significantly enhances both thermodynamically and mechanical stability, which are confirmed by calculated formation energy and elastic constants. The Pugh’s and Poisson ratios are estimated to confirm reduced brittleness and increased ductility in <span>(CsGeCl_3)</span> upon the increase of fluorine content. The electronic analysis reveals a direct semiconducting nature with a tunable band gap, increasing from 1.03 eV to 2.06 eV upon fluorine substitution. Optical analysis indicates anisotropic behavior in mixed halides perovskites, <span>(CsGeCl_2F)</span> and <span>(CsGeClF_2)</span>, exhibiting strong absorption coefficients on the order of <span>(10^5)</span> cm<span>(^{-1})</span>, low reflectivity, and weak electron–hole interactions. These findings underscore the potential of <span>(CsGeCl_{3-n}F_n)</span> perovskites for improved performance in solar cells and other optoelectronic devices. The results offer valuable insights into optimizing these materials for advanced optoelectronic applications and sustainable energy technologies.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143716885","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}

引用次数: 0

Unveiling the thermoelectric potential of perthioborate MBS₃(M = Rb;Cs) compounds: insights from DFT calculations

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-23 DOI: 10.1140/epjb/s10051-025-00896-4

Garadi Fatima, Said Maabed, Hanifi Mebarki, Mohamed Halit, Cherif Mtta, Lamin Ben Kamri Ahmed

{"title":"Unveiling the thermoelectric potential of perthioborate MBS₃(M = Rb;Cs) compounds: insights from DFT calculations","authors":"Garadi Fatima, Said Maabed, Hanifi Mebarki, Mohamed Halit, Cherif Mtta, Lamin Ben Kamri Ahmed","doi":"10.1140/epjb/s10051-025-00896-4","DOIUrl":"10.1140/epjb/s10051-025-00896-4","url":null,"abstract":"<div><p>This study presents a thorough theoretical investigation of perthioborate MBS₃ (M = Rb, Cs), a type of chalcogenometallate structure, using density functional theory to evaluate their suitability for thermoelectric applications. We examine the interconnections among their electronic, elastic, and thermoelectric properties. Electronic structure calculations reveal that these materials possess an indirect bandgap equal to 1.9 eV for M = Rb and 2.1 eV for M = Cs. Both RbBS₃ and CsBS₃ display low elastic constants, enhanced phonon anharmonicity and reduced thermal conductivity, which positions them as promising candidates for thermoelectric use. They also exhibit a substantial Seebeck coefficient and excellent electrical conductivity, especially along the zz direction, with values surpassing 400,000 Ω⁻<sup>1</sup>m⁻<sup>1</sup> at 300 K. Within the temperature range of 400 K to 600 K, both materials demonstrate a high figure of merit close to 1. These theoretical insights highlight the promising potential of perthioborate materials for high-performance thermoelectric applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143676425","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}

引用次数: 0

Competition between long-range and short-range interactions in the voter model for opinion dynamics

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-21 DOI: 10.1140/epjb/s10051-025-00900-x

Jacopo A. Garofalo, Eugenio Lippiello, Fabrizio Rippa

{"title":"Competition between long-range and short-range interactions in the voter model for opinion dynamics","authors":"Jacopo A. Garofalo, Eugenio Lippiello, Fabrizio Rippa","doi":"10.1140/epjb/s10051-025-00900-x","DOIUrl":"10.1140/epjb/s10051-025-00900-x","url":null,"abstract":"<div><p>The voter model is a widely used framework in sociophysics to model opinion formation based on local interactions between individuals. In this work, we investigate how the spread of consensus is affected by introducing long-range interactions. Specifically, we study a one-dimensional voter model where a fraction <span>(gamma )</span> of links connect individuals at distances <i>r</i> drawn from a distribution decaying as <span>(r^{-sigma -1})</span>. Our results reveal that even a small fraction of long-range interactions fundamentally alters the system’s asymptotic behavior. When long-range interactions decay rapidly <span>(sigma > 2)</span>, their influence is restricted to distances beyond a time-dependent threshold, <span>(r^*(t))</span>. For <span>(r < r^*(t))</span>, the system exhibits short-range dynamics characterized by a Gaussian-like correlation function and a diffusion-driven growth of the correlation length, <span>(L(t) sim t^{1/2})</span>. However, for <span>(r > r^*(t))</span>, the correlation function transitions to a power-law decay, <span>(r^{-sigma -1})</span>, highlighting the capacity of long-range links to propagate consensus across greater distances. When long-range interactions decay more slowly (<span>(sigma < 2)</span>), they dominate the dynamics at all scales, leading to behavior akin to a system with only long-range interactions. Notably, in the regime <span>(sigma < 1)</span> long-range links induce a stationary steady state, even for small <span>(gamma )</span>.</p></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-025-00900-x.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143668125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulating the electronic and optical properties of InGeF3 perovskite under pressure: a computational approach

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-18 DOI: 10.1140/epjb/s10051-025-00893-7

Mohammed Miri, Younes Ziat, Hamza Belkhanchi, Ayoub Koufi, Youssef Ait El Kadi

{"title":"Modulating the electronic and optical properties of InGeF3 perovskite under pressure: a computational approach","authors":"Mohammed Miri, Younes Ziat, Hamza Belkhanchi, Ayoub Koufi, Youssef Ait El Kadi","doi":"10.1140/epjb/s10051-025-00893-7","DOIUrl":"10.1140/epjb/s10051-025-00893-7","url":null,"abstract":"<div><p>This study explores the structural, mechanical, electronic and optical properties of InGeF<sub>3</sub> perovskite under varying pressures using density functional theory (DFT) via the Wien2k code. Elastic constants meet mechanical stability criteria at 0 GPa, with a notable improvement in ductility and hardness under pressure. Electronic analysis reveals an indirect band gap of 1.51 eV at 0 GPa, narrowing to 0.67 eV at 9 GPa, signaling a transition to metallic behavior. The density of states shows the dominance of halogens in the valence band, and significant contributions from indium and germanium in the conduction band. Optical properties, such as absorption and reflectivity, evolve under pressure, with a shift of the absorption spectrum toward lower energies. These findings demonstrate that pressure not only modifies the electronic structure of InGeF<sub>3</sub> but also enhances its optical performance, making it a potential candidate for photovoltaic applications.</p><h3>Graphical abstract</h3><p><b>a</b>) Absorption coefficient corresponding to the energy under pressure 0 GPa, 3 GPa, 6 GPa and 9 GPa for nGeF<sub><b>3</b></sub>, <b>b)</b> Conductivity versus energy under pressure 0 GPa, 3 GPa, 6 GPa and 9 GPa GPa of InGeF<sub>3</sub></p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645534","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}

引用次数: 0

Theoretical and experimental studies of melting of the 1/3 magnetization plateau in a frustrated (S=1/2) antiferromagnetic trimerized quantum Heisenberg spin chain compound (hbox {Na}_2hbox {Cu}_3hbox {Ge}_4hbox {O}_{12})

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-18 DOI: 10.1140/epjb/s10051-025-00891-9

Sachin Kumar, A. K. Bera, Amit Kumar, Yurii Skourski, S. M. Yusuf

{"title":"Theoretical and experimental studies of melting of the 1/3 magnetization plateau in a frustrated (S=1/2) antiferromagnetic trimerized quantum Heisenberg spin chain compound (hbox {Na}_2hbox {Cu}_3hbox {Ge}_4hbox {O}_{12})","authors":"Sachin Kumar, A. K. Bera, Amit Kumar, Yurii Skourski, S. M. Yusuf","doi":"10.1140/epjb/s10051-025-00891-9","DOIUrl":"10.1140/epjb/s10051-025-00891-9","url":null,"abstract":"<p>We report the magnetization process of <span>(S=1/2)</span> Heisenberg antiferromagnetic <span>(J_1{-}J_1{-}J_2)</span> trimerized spin chain system (with frustration due to the next-nearest-neighbor interaction <span>(J_3)</span> within the trimer) under applied magnetic field by means of density-matrix renormalization group method. Here, <span>(J')</span>s are the antiferromagnetic exchange interaction constants. Specifically, we explore the phenomenon of 1/3 magnetization plateau for the exchange coupling ratios <span>( alpha = 0.18, beta =0.18 )</span>, and <span>(J_1=235)</span> K, where <span>(alpha =J_2/J_1)</span>, and <span>(beta =J_3/J_1)</span> as found for the model compound <span>(hbox {Na}_2hbox {Cu}_3hbox {Ge}_4hbox {O}_{12})</span>. It is found that a wide 1/3 quantum magnetization plateau state (observed in ground state magnetization) gradually disappears with increasing temperature beyond a crossover temperature <span>(T_{co})</span> due to thermal fluctuations. Based on numerical data, the width <i>w</i>(<i>T</i>) of the magnetization plateau is found to follow an exponential behave as <span>(sim e^{-B/sqrt{T_{co}-T}})</span>, where <i>B</i> is a constant and <span>(T_{co})</span> is estimated to be <span>( approx 60)</span> K. The occurrence of the 1/3 plateau is also seen through the field-induced energy gap in the energy-level spectrum of the system. The stability of the magnetization plateau state against the perturbation depends upon the size of the energy gap. Further, calculated isothermal magnetization results are compared with experimental high field magnetization data for the quasi-one-dimensional (1D) spin <span>(S=1/2)</span> trimer chain compound <span>(hbox {Na}_2hbox {Cu}_3hbox {Ge}_4hbox {O}_{12})</span>.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-025-00891-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143638153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chirality-induced rectification in asymmetric gear systems

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-18 DOI: 10.1140/epjb/s10051-025-00894-6

Hui-zhang Xie, Jin-ran Li

{"title":"Chirality-induced rectification in asymmetric gear systems","authors":"Hui-zhang Xie, Jin-ran Li","doi":"10.1140/epjb/s10051-025-00894-6","DOIUrl":"10.1140/epjb/s10051-025-00894-6","url":null,"abstract":"<p>We investigate the emergence of unidirectional rotation in an asymmetric gear immersed in a chiral active particle bath under periodic boundary conditions. Our results demonstrate that the nonequilibrium characteristics of self-propelled particles can drive sustained rotational motion of the gear. The study reveals that both particle chirality and gear asymmetry independently induce symmetry breaking, which collectively leads to directed rotation. The rotational direction is determined by the interplay between these two factors, and we demonstrate that the direction can be reversed through systematic parameter control. Furthermore, we identify optimal parameter combinations of particle chirality and self-propulsion speed that maximize the gear’s rotational velocity. These findings provide fundamental insights into the control of active matter systems and offer practical guidelines for experimental designs that utilize chiral active matter to transform random motion into controlled directional movement.</p><p>The study investigates the emergence of directional rotation in an asymmetric gear immersed within a sea of chiral active particles under periodic boundary conditions. We demonstrate that the inherent nonequilibrium properties of these self-propelling particles can induce consistent gear rotation. </p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143645533","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}

引用次数: 0

DFT study of the novel double perovskite Sr2PrRuO6: structural, electronic, optical, magnetic, and thermoelectric properties

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-11 DOI: 10.1140/epjb/s10051-025-00887-5

Fatima Zohra Zoulikha Bellahcene, Kaddour Bencherif, Fafa Chiker, Djamel-Eddine Missoum, Djillali Bensaid

{"title":"DFT study of the novel double perovskite Sr2PrRuO6: structural, electronic, optical, magnetic, and thermoelectric properties","authors":"Fatima Zohra Zoulikha Bellahcene, Kaddour Bencherif, Fafa Chiker, Djamel-Eddine Missoum, Djillali Bensaid","doi":"10.1140/epjb/s10051-025-00887-5","DOIUrl":"10.1140/epjb/s10051-025-00887-5","url":null,"abstract":"<div><p>This study presents a comprehensive analysis of the structural, electronic, magnetic, optical, and thermoelectric properties of the double perovskite Sr<sub>2</sub>PrRuO<sub>6</sub> using density functional theory (DFT). Calculations were conducted using the full-potential linearized augmented plane wave (FP-LAPW) method, incorporating the Local Density Approximation (LDA), Generalized Gradient Approximation (GGA), and the Tran–Blaha modified Becke–Johnson (TB-mBJ) exchange–correlation potentials. The results demonstrate that Sr<sub>2</sub>PrRuO<sub>6</sub> is structurally stable in its ferromagnetic (FM) configuration, with a magnetic moment of 3.00 µB, while the non-magnetic (NM) phase is energetically less favorable. Structural properties calculated using GGA provided more accurate lattice parameters compared to LDA. Electronic structure analysis reveals half-metallic behavior, confirmed by the TB-mBJ potential, underscoring its suitability for spintronic applications. Optical investigations, performed with the GGA + mBJ approach, reveal a notable optical band gap and diverse responses across the infrared, visible, and ultraviolet regions, consistent with the electronic structure. Thermoelectric properties, evaluated using Boltzmann transport equations (BTE) over a temperature range of 50–1000 K, highlight promising spin-polarized transport characteristics, making Sr<sub>2</sub>PrRuO<sub>6</sub> a potential candidate for thermoelectric applications. In summary, this study highlights the unique combination of half-metallic ferromagnetism, strong optical properties, and excellent thermoelectric performance of Sr<sub>2</sub>PrRuO<sub>6</sub>, setting it apart from other double perovskites and positioning it as a promising candidate for advanced spintronic and thermoelectric applications.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143594780","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}

引用次数: 0

Structural, wettability, optical, and electrical modifications by varying precursor solutions of sprayed Co3O4 thin films for solar cell applications

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-08 DOI: 10.1140/epjb/s10051-025-00889-3

Younes Nezzari, Warda Darenfad, Kamel Mirouh, Noubeil Guermat, Nadir Bouarissa

{"title":"Structural, wettability, optical, and electrical modifications by varying precursor solutions of sprayed Co3O4 thin films for solar cell applications","authors":"Younes Nezzari, Warda Darenfad, Kamel Mirouh, Noubeil Guermat, Nadir Bouarissa","doi":"10.1140/epjb/s10051-025-00889-3","DOIUrl":"10.1140/epjb/s10051-025-00889-3","url":null,"abstract":"<p>Co<sub>3</sub>O<sub>4</sub> thin films were successfully deposited by spray pyrolysis with different precursor solutions, including cobalt nitrate, cobalt acetate, and cobalt chloride. The effect of these precursor solutions on the properties of the obtained Co<sub>3</sub>O<sub>4</sub> thin films was extensively studied. XRD analysis revealed that all three films exhibited polycrystalline nature with a preferred crystal orientation along the (311) plane. The crystallite size was observed to decrease for the films prepared using three different precursors: cobalt nitrate, cobalt chloride, and cobalt acetate, respectively. Raman spectroscopy provided further confirmation of the successful formation of the Co<sub>3</sub>O<sub>4</sub> spinel structure. AFM analysis demonstrated the significant impact of the cobalt source on surface morphology. The cobalt nitrate-based film exhibited a significantly lower surface roughness value of 15.29 nm, in contrast to the films prepared from cobalt chloride and cobalt acetate, which exhibited higher roughness values of 60.30 nm and 65 nm, respectively. Contact angle analysis revealed that all the samples exhibited a hydrophobic nature. UV–visible transmission spectra revealed that the film produced using cobalt nitrate has high light absorption and a smaller optical band gap. Electrical characterization further demonstrated that the Co<sub>3</sub>O<sub>4</sub> film prepared with cobalt nitrate had the lowest electrical resistivity (<i>ρ</i> = 2.905 × 10<sup>–1</sup> Ω.cm) among the films.</p>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1140/epjb/s10051-025-00889-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143581158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spin-dependent resonant tunneling in CdTe/Cd1−xMnxTe nanostructures: effect of polaronic mass

IF 1.6 4区物理与天体物理

The European Physical Journal B Pub Date : 2025-03-06 DOI: 10.1140/epjb/s10051-025-00888-4

L. Bruno Chandrasekar, A. Dinesh, Lalitha Gnanasekaran, Madhappan Santhamoorthy, M. Karunakaran, A. Manikandan, E. Priyadharshini, P. Shunmuga Sundaram, S. Kaleel Mohamed Ibrahim

{"title":"Spin-dependent resonant tunneling in CdTe/Cd1−xMnxTe nanostructures: effect of polaronic mass","authors":"L. Bruno Chandrasekar, A. Dinesh, Lalitha Gnanasekaran, Madhappan Santhamoorthy, M. Karunakaran, A. Manikandan, E. Priyadharshini, P. Shunmuga Sundaram, S. Kaleel Mohamed Ibrahim","doi":"10.1140/epjb/s10051-025-00888-4","DOIUrl":"10.1140/epjb/s10051-025-00888-4","url":null,"abstract":"<div><p>Effect of polaronic mass on the resonant tunneling of electrons in CdTe/Cd<sub>1−<i>x</i></sub>Mn<sub><i>x</i></sub>Te double-barrier heterostructure is investigated. The well-known transfer matrix method is employed to calculate the barrier transparency. One can obtain a high degree of spin-polarization at a high concentration of Mn in the barrier region. The barrier transparency peak becomes narrow as the concentration of Mn increases from 10 to 20%. The effect of polaronic mass shifts the transparency peak to the lower value on the energy scale. One can obtain a high degree of spin-polarization at a high concentration of Mn in the barrier region. The account of the polaronic mass shifts the resonance energy of spin-polarization to the lower value and it enhances the spin-polarization. The spin-down electrons spend more time in the heterostructure than the spin-up electrons. The dwell time changes about 1000 times as the concentration of the barrier changes.</p><h3>Graphical abstract</h3><p>Spin separation versus Mn concentration (a) without the account of polaronic mass and (b) with the account of polaronic mass</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":787,"journal":{"name":"The European Physical Journal B","volume":"98 3","pages":""},"PeriodicalIF":1.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143553732","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}

引用次数: 0