Chinese Journal of Physics最新文献

Turning the magnetically dependent topological phase with electron correlation

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-04-04 DOI: 10.1016/j.cjph.2025.03.032

Kunpeng Cai , Yanqing Shen , Xin Yang , Xianghui Meng , Yu Zhang , Long Pang , Peng E , Zhongxiang Zhou

引用次数: 0

Influence of Majorana bound states on conductance characteristics in a T-shaped quantum dot molecule

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-26 DOI: 10.1016/j.cjph.2025.03.042

Zelong He , Muhammad Aslam , Seyede Zahra Naeimi , M. Shahid , Sergey Nikiforov , Muhammad Khalid Hussain , Alma Dauletbekova , Hussain Ahmad , Anees Ur Rehman

{"title":"Influence of Majorana bound states on conductance characteristics in a T-shaped quantum dot molecule","authors":"Zelong He , Muhammad Aslam , Seyede Zahra Naeimi , M. Shahid , Sergey Nikiforov , Muhammad Khalid Hussain , Alma Dauletbekova , Hussain Ahmad , Anees Ur Rehman","doi":"10.1016/j.cjph.2025.03.042","DOIUrl":"10.1016/j.cjph.2025.03.042","url":null,"abstract":"<div><div>Quantum dots (QDs) in contact with normal-metal and superconducting leads exhibit remarkable electron transmission features. The coupling of Majorana bound states (MBSs) has made them a promising platform for the development of mesoscopic structures. To elaborate on the highly efficient mesoscopic mode, the Andreev conductance in a T-shaped QD molecule coupled with MBSs is theoretically addressed. As the QD-MBS coupling strength λ is focused with respect to the QD energy level <span><math><mrow><msub><mrow><mi>ε</mi></mrow><mn>1</mn></msub><mo>=</mo><msub><mrow><mi>ε</mi></mrow><mn>2</mn></msub><mo>=</mo><mn>0</mn></mrow></math></span> in a T-shaped QD molecule, the conductance peak at <span><math><mrow><msub><mrow><mi>ε</mi></mrow><mi>F</mi></msub><mo>=</mo><mn>0</mn></mrow></math></span> rises up to 0.5<span><math><mrow><msup><mrow><mi>e</mi></mrow><mn>2</mn></msup><mo>/</mo><mi>h</mi></mrow></math></span>. At <span><math><mrow><msub><mrow><mi>ε</mi></mrow><mn>1</mn></msub><mo>=</mo><msub><mrow><mi>ε</mi></mrow><mn>2</mn></msub><mo>=</mo><mn>0</mn></mrow></math></span>, the bonding and antibonding states are captured in the conductance lines as suitable QD-MBS or MBS-MBS coupling <span><math><msub><mrow><mi>ε</mi></mrow><mi>M</mi></msub></math></span> survives. Furthermore, for the asymmetric QD-lead coupling case, changing <span><math><msub><mrow><mi>ε</mi></mrow><mi>M</mi></msub></math></span> not only induces a transition in zero bias peaks but also suppresses the conductance curve in a low critical bias regime. The present findings can deepen the understanding of the influence of MBSs on electron transport features, highlighting the potential of T-shaped QD molecules coupled with MBSs for additional development and applications in mini-sized devices.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"95 ","pages":"Pages 627-637"},"PeriodicalIF":4.6,"publicationDate":"2025-03-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143760380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Quantifying the environment's temperature effect on gene expression: Lyapunov exponent and multifractal dimension approach 量化环境温度对基因表达的影响：李亚普诺夫指数和多分形维度方法

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-26 DOI: 10.1016/j.cjph.2025.02.041

F. Nemati, S. Behnia

引用次数: 0

Heterogeneous and homogeneous extreme multistability in a dual-memristor FHN circuit considering magnetic and electric field effects

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-24 DOI: 10.1016/j.cjph.2025.03.033

Yongjie Zhu , Rui Liang , Guangzhe Zhao , Xiaoyun Wang , Yunzhen Zhang

{"title":"Heterogeneous and homogeneous extreme multistability in a dual-memristor FHN circuit considering magnetic and electric field effects","authors":"Yongjie Zhu , Rui Liang , Guangzhe Zhao , Xiaoyun Wang , Yunzhen Zhang","doi":"10.1016/j.cjph.2025.03.033","DOIUrl":"10.1016/j.cjph.2025.03.033","url":null,"abstract":"<div><div>The memristor-based neuron circuit considering the magnetic field effect is prone to heterogeneous extreme multistability (EM). However, the electric field effect represented by a charge-controlled memristor can also act on the neuron circuit, causing unusual nonlinear phenomena. To reveal the dynamical effects of magnetic and electric fields on biological neurons, this study proposes a novel non-autonomous dual-memristor FHN circuit considering magnetic and electric field effects. It is achieved by introducing a charge-controlled memristor representing the electric field effect into a single-memristor FHN circuit that considers only the magnetic field effect. The dual-memristor FHN circuit not only emerges the heterogeneous EM dependent on the initial states of the two memristors, but also presents the homogeneous EM whose dynamics can be boosted by the initial state offset of the charge-controlled memristor. The initial state-related bifurcation behaviors are numerically revealed, and the mechanism of homogeneous EM is theoretically interpreted. Further, a flux-charge model dependent on initial state parameters is established by feat of the incremental integral reconstruction, and then the initial state parameters-related stability and bifurcation behaviors are elaborated. Finally, digital implementations based on FPGA platform are provided to confirm the numerical simulations.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"95 ","pages":"Pages 714-730"},"PeriodicalIF":4.6,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143791628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Effects of electromagnetic induction on vibrational resonance in fast spiking Izhikevich neuronal systems

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-21 DOI: 10.1016/j.cjph.2025.03.019

Zhaoxue Huang , Kaijun Wu , Meijuan He , Jiawei Li

引用次数: 0

Quantum calculus approaches to Ostrowski-type inequalities for strongly n-polynomial convex functions with applications in quantum physics

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-21 DOI: 10.1016/j.cjph.2025.03.013

Humaira Kalsoom , Bandar Almohsen

{"title":"Quantum calculus approaches to Ostrowski-type inequalities for strongly n-polynomial convex functions with applications in quantum physics","authors":"Humaira Kalsoom , Bandar Almohsen","doi":"10.1016/j.cjph.2025.03.013","DOIUrl":"10.1016/j.cjph.2025.03.013","url":null,"abstract":"<div><div>This article aims to establish a new generalization of <span><math><mi>q</mi></math></span>-Ostrowski-type inequalities within the class of strongly <span><math><mi>n</mi></math></span>-polynomial convex functions by utilizing quantum calculus techniques, such as <span><math><mrow><msub><mrow></mrow><mrow><mi>a</mi></mrow></msub><msub><mrow><mi>D</mi></mrow><mrow><mi>q</mi></mrow></msub></mrow></math></span>- and <span><math><mrow><msup><mrow></mrow><mrow><mi>b</mi></mrow></msup><msub><mrow><mi>D</mi></mrow><mrow><mi>q</mi></mrow></msub></mrow></math></span>-derivatives, as well as <span><math><msub><mrow><mi>q</mi></mrow><mrow><mi>a</mi></mrow></msub></math></span>- and <span><math><msup><mrow><mi>q</mi></mrow><mrow><mi>b</mi></mrow></msup></math></span>-integrals. To improve the accuracy of these bounds, we utilize several mathematical quantum inequalities, including <span><math><mi>q</mi></math></span>-Hölder’s inequality and the <span><math><mi>q</mi></math></span>-power mean inequality. We derive some special cases from our main results and reproduce known results under specific conditions. The paper emphasizes the significance of these inequalities by presenting detailed examples and graphical representations. These examples demonstrate their practical applications and validate the theoretical findings. Moreover, these inequalities have significant applications in statistical physics, where they contribute to refining entropy inequalities and thermodynamic bounds.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"95 ","pages":"Pages 508-528"},"PeriodicalIF":4.6,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738792","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 stationary and oscillatory thermocapillary convection of a Cattaneo–Christov fluid over a thick wall with finite thermal conductivity

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-21 DOI: 10.1016/j.cjph.2025.03.010

J. Antonio Ruiz-Díaz, Luis A. Dávalos-Orozco

引用次数: 0

Stability and quadruple solution dynamics of unsteady ternary hybrid nanofluid flow over a stretching/shrinking wedge

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-20 DOI: 10.1016/j.cjph.2025.03.014

Yun Ouyang , Md Faisal Md Basir , Kohilavani Naganthran , Ioan Pop

{"title":"Stability and quadruple solution dynamics of unsteady ternary hybrid nanofluid flow over a stretching/shrinking wedge","authors":"Yun Ouyang , Md Faisal Md Basir , Kohilavani Naganthran , Ioan Pop","doi":"10.1016/j.cjph.2025.03.014","DOIUrl":"10.1016/j.cjph.2025.03.014","url":null,"abstract":"<div><div>The stability analysis of quadruple solutions in unsteady ternary hybrid nanofluid flow past a stretching/shrinking wedge is conducted to optimize boundary layer characteristics, enhancing heat transfer and reducing thermal resistance. Based on an industrial process, the mathematical model determines critical values for first–second and third–fourth solutions using the BVP4C function in MATLAB. Key parameters, including the unsteadiness parameter, stretching/shrinking parameter, wedge parameter, suction/injection, and hybridity, influence flow dynamics, and heat transfer, with validation confirming alignment with previous studies. The skin friction coefficient and Nusselt number increase for a shrinking wedge with higher unsteadiness, nanofluid type, and suction/injection. The first and third solutions are stable, while the others are not. At a stretching/shrinking parameter of -9 and a nanoparticle volume fraction of 0.04, the ternary nanofluid achieves 0.28% higher thermal efficiency than the binary nanofluid, which exceeds the mono-nanofluid by 0.59%. The novelty of this study lies in identifying quadruple solutions and their critical values for none, two, and quadruple solutions, contributing to advancements in slit die extrusion engineering and heat exchanger applications.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"95 ","pages":"Pages 558-572"},"PeriodicalIF":4.6,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143746879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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 novel insights: Nonlinear dispersion dynamics of optical solitons through new φ6-Model expansion in the Klein–Gordon equation

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-20 DOI: 10.1016/j.cjph.2025.03.015

Asif Yokus , Muhammad Abubakar Isah

{"title":"Unveiling novel insights: Nonlinear dispersion dynamics of optical solitons through new φ6-Model expansion in the Klein–Gordon equation","authors":"Asif Yokus , Muhammad Abubakar Isah","doi":"10.1016/j.cjph.2025.03.015","DOIUrl":"10.1016/j.cjph.2025.03.015","url":null,"abstract":"<div><div>This study employs a nonlinear differential equation to model diverse phenomena, encompassing dislocation movement in crystals, characteristics of elementary particles, and the propagation of fluxions in Josephson junctions, with the Klein–Gordon equation serving as an illustrative example. The <span><math><msup><mrow><mi>φ</mi></mrow><mrow><mn>6</mn></mrow></msup></math></span>-model expansion method, a multitude of solution types are explicitly obtained, which encompass kink-type solitons, recognized as topological solitons within the realm of water waves. Notably, these solitons exhibit velocities independent of wave amplitude, alongside other variations like dark, singular, periodic, and combined singular soliton solutions. The research outcomes hold the potential to enhance the nonlinear dynamical characteristics of the Klein–Gordon equation. The suggested <span><math><msup><mrow><mi>φ</mi></mrow><mrow><mn>6</mn></mrow></msup></math></span>-model expansion technique provides a pragmatic and efficient strategy for addressing a wide range of nonlinear partial differential equations. The findings are visually presented through insightful graphs that elucidate the dynamic aspects of the results, demonstrating the accuracy of the obtained solutions when applied to the Klein–Gordon equation. The physical properties of surface waves are comprehensively analyzed, with a particular focus on Rayleigh waves. By modeling the regular oscillations, energy transfer and complex behavior of Rayleigh waves under nonlinear effects, this study provides theoretical support that these waves can exhibit solitary wave properties under certain boundary conditions.</div></div>","PeriodicalId":10340,"journal":{"name":"Chinese Journal of Physics","volume":"95 ","pages":"Pages 476-492"},"PeriodicalIF":4.6,"publicationDate":"2025-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Existence and stability results for steady atmospheric Ekman flows in ellipsoidal coordinates

IF 4.6 2区物理与天体物理

Chinese Journal of Physics Pub Date : 2025-03-19 DOI: 10.1016/j.cjph.2025.03.009

Taoyu Yang , Michal Fečkan , JinRong Wang

引用次数: 0