New Journal of Physics最新文献_第2页

Destructive interference as the origin of the Hardyscenario 破坏性干扰是 Hardyscenario 的起源

New Journal of Physics Pub Date : 2024-07-08 DOI: 10.1088/1367-2630/ad6029

Johannes Seiler, Thomas Strohm, W. Schleich

引用次数: 0

Pressure tuning of superconductivity in TiN thin films 氮化钛薄膜超导性的压力调整

New Journal of Physics Pub Date : 2024-07-08 DOI: 10.1088/1367-2630/ad602d

Yuqing Zhang, Ye Yang, Xikai Wen, Zhigang Gui, Yikang Li, Yanjun Li, Ruyi Zhang, Yanwei Cao, J. Ying, Xianhui Chen

{"title":"Pressure tuning of superconductivity in TiN thin films","authors":"Yuqing Zhang, Ye Yang, Xikai Wen, Zhigang Gui, Yikang Li, Yanjun Li, Ruyi Zhang, Yanwei Cao, J. Ying, Xianhui Chen","doi":"10.1088/1367-2630/ad602d","DOIUrl":"https://doi.org/10.1088/1367-2630/ad602d","url":null,"abstract":"\u0000 Titanium nitride (TiN) thin films are used for the fabrication of superconducting devices due to their chemical stability against oxidization and high quality at interfaces. The high-pressure technique serves as a useful tool to understand the mechanical and electrical properties of materials, which is crucial for practical applications. However, high-pressure transport measurements of thin films are extremely difficult due to the limited sample space of high-pressure cells and the fragility of thin films. Here, we successfully carried out high-pressure electrical transport and Raman measurements on TiN films up to ~50 GPa. The superconducting transition temperature gradually decreases with increasing pressure, which can be attributed to the decrease of electron -phonon coupling and is consistent with our first-principles calculations. In addition, the coexistence of a symmetry-enforced Dirac nodal chain and a nodal box is revealed by our calculations in TiN. Our work provides a promising way to study the physical properties of thin films at high pressure, which would broaden the high-pressure research field.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"123 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141667585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Edge-based strategies enhance cooperation in intertwined dynamics of cooperation and synchronization 在合作与同步交织的动态过程中，基于边缘的策略能加强合作

New Journal of Physics Pub Date : 2024-07-03 DOI: 10.1088/1367-2630/ad5eb3

Yuting Dong, Xiangfeng Dai, Yikang Lu, Haoyu Jin, Lei Shi

{"title":"Edge-based strategies enhance cooperation in intertwined dynamics of cooperation and synchronization","authors":"Yuting Dong, Xiangfeng Dai, Yikang Lu, Haoyu Jin, Lei Shi","doi":"10.1088/1367-2630/ad5eb3","DOIUrl":"https://doi.org/10.1088/1367-2630/ad5eb3","url":null,"abstract":"\u0000 In various ecosystems and human societies, living organisms and systems often exhibit cooperative and synchronous behaviors during survival. Recently, co-evolutionary models of cooperation and synchronization have shed light on the underlying mechanisms driving such behaviors, offering an intriguing avenue for studying these phenomena. However, current research predominantly focuses on a point-strategy decision mode, where each individual is limited to taking the same actions towards its neighbors. Such an assumption implies that an individual is unable to differentiate its neighbors and adjust its strategy accordingly, making it difficult to capture the complexity and diversity of interactive behaviors observed in reality. To this end, we introduce the interaction mode based on the edge-strategy and investigate how synchronization and cooperation co-evolve under interaction diversity. Specifically, we explore a scenario in which individuals can adopt different strategic decisions toward their neighbors based on their differences, thereby extending the traditional point strategy. Our research clarifies the positive role of interaction diversity in alleviating the evolutionary Kuramoto’s dilemma. Moreover, it provides new insights and ideas for comprehending the influence of edge-strategy on the co-evolution of cooperative and synchronous behaviors.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141682340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interplay of electromagnetically induced transparency and Doppler broadening in hot atomic vapors 热原子蒸汽中电磁诱导透明度和多普勒展宽的相互作用

New Journal of Physics Pub Date : 2024-07-01 DOI: 10.1088/1367-2630/ad5d83

Lida Zhang, N. Stiesdal, H. Busche, Mikkel Gaard Hansen, Thomas Pohl, S. Hofferberth

{"title":"Interplay of electromagnetically induced transparency and Doppler broadening in hot atomic vapors","authors":"Lida Zhang, N. Stiesdal, H. Busche, Mikkel Gaard Hansen, Thomas Pohl, S. Hofferberth","doi":"10.1088/1367-2630/ad5d83","DOIUrl":"https://doi.org/10.1088/1367-2630/ad5d83","url":null,"abstract":"\u0000 For multi-level systems in hot atomic vapors the interplay between the Doppler shift due to atom velocity and the wavenubmer mismatch between driving laser fields strongly influences transmission and absorption properties of the atomic medium. In a three-level atomic ladder-system, Doppler broadening limits the visibility of electromagnetically-induced transparency (EIT) when the probe and control fields are co-propagating, while EIT is recovered under the opposite condition of counter-propagating geometry and k\u0000 p< k\u0000 c, with k\u0000 p and k\u0000 c being the wavenumbers of the probe and control fields, respectively. This effect has been studied and experimentally demonstrated as an efficient mechanism to realize non-reciprocal probe light transmission, opening promising avenues for example for realization of magnetic-field free optical isolators. In this tutorial we discuss the theoretical derivation of this effect and show the underlying mechanism to be an avoided crossing of the states dressed by the coupling laser as a function of atomic velocities when k\u0000 p< k\u0000 c. We investigate how the non-reciprocity scales with wavelength mismatch and show how to experimentally demonstrate the effect in a simple Rydberg-EIT system using thermal Rubidium atoms.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141693694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-Iterative 3D Computer-Generated Hologram Based on Single Full-Support Optimized Random Phase and Phase Compensation 基于单全支持优化随机相位和相位补偿的非迭代三维计算机生成全息图

New Journal of Physics Pub Date : 2024-06-13 DOI: 10.1088/1367-2630/ad5810

Cheng Zhang, Peng Han, Jisen Shi, Hao Zhou, Quanbin Zhang, Hong Cheng, Chuan Shen, Fen Zhang, Chao Han, Sui Wei

引用次数: 0

Two-dimensional Mo decorated borophenes: high critical temperature, large magnetic anisotropy, and stacking-dependent magnetism 二维钼装饰硼苯：高临界温度、大磁各向异性和堆叠相关磁性

New Journal of Physics Pub Date : 2024-06-13 DOI: 10.1088/1367-2630/ad57e4

Zhen Gao, Fengxian Ma, Hongbo Wu, Weizhen Meng, Yalong Jiao

{"title":"Two-dimensional Mo decorated borophenes: high critical temperature, large magnetic anisotropy, and stacking-dependent magnetism","authors":"Zhen Gao, Fengxian Ma, Hongbo Wu, Weizhen Meng, Yalong Jiao","doi":"10.1088/1367-2630/ad57e4","DOIUrl":"https://doi.org/10.1088/1367-2630/ad57e4","url":null,"abstract":"\u0000 Two-dimensional (2D) magnetic materials with high critical temperature, large magnetic anisotropy energy and intrinsic magnetism hold great promise for advancements in spintronics. However, synergizing these attributes within a single material remains challenging. Through the application of swarm-intelligence-based structure searching along with first-principles calculations, we identify two Mo decorated borophene variants, denoted as MoB4 and MoB6, are such candidates with high thermal and dynamical stabilities. MoB4 and MoB6 are characterized as either ferromagnetic or antiferromagnetic metals. Notably, both MoB4 and MoB6 display sizable magnetic anisotropy energy—924 and 932 μeV per Mo atom, respectively—surpassing that of the widely studied CrI3 monolayer, which measures 685 μeV per Cr atom. Monte Carlo simulation suggests the Curie temperature of MoB4 sheet is 390K, which is above room temperature. Our examination uncovers that bilayer MoxBy formations exhibit layer-specific van der Waals interactions, contrasting with bilayer borophenes produced experimentally, which display robust interlayer chemical bonding. We determine that the stacking order profoundly influence both the magnetic anisotropy energy and critical temperatures of the material. Specifically, the magnetic anisotropy energy for both structures doubles in their bilayer configurations, with AB-stacked MoB4 and AC-stacked MoB6 demonstrating critical temperatures of 550K and 320K, respectively. The exceptional electronic and magnetic characteristics of the MoxBy monolayers position them as favorable candidates for future spintronic devices.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"35 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141348488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-quality factor Quasi-BIC mode via selective symmetry-breaking approach in a terahertz metasurface 通过太赫兹元表面中的选择性对称破缺方法实现高质量因子准 BIC 模式

New Journal of Physics Pub Date : 2024-06-12 DOI: 10.1088/1367-2630/ad570e

B. Bhowmik, Rohith Km, Samuel John, Shriganesh S. Prabhu, Gagan Kumar

{"title":"High-quality factor Quasi-BIC mode via selective symmetry-breaking approach in a terahertz metasurface","authors":"B. Bhowmik, Rohith Km, Samuel John, Shriganesh S. Prabhu, Gagan Kumar","doi":"10.1088/1367-2630/ad570e","DOIUrl":"https://doi.org/10.1088/1367-2630/ad570e","url":null,"abstract":"\u0000 This study numerically and experimentally presents a novel approach to excite BIC mode with a high Q-factor in the THz meta-molecule (composition of metaatoms) system, leveraging a unique method of selective symmetry breaking in a ringshaped metamolecule system. Unlike conventional strategies that uniformly disrupt the symmetry across all resonators to excite a quasi-BIC mode, this innovative technique targets only half of the unit cell for symmetry perturbation. This selective symmetry breaking minimizes radiative losses and enhances the Q-factor of the quasi-bound states in continuum (quasi-BIC) modes. The selective symmetry breaking is achieved in a ring-shaped metamolecule system by simple radial perturbation. The results depict a notable improvement in the Q-factor, achieving values as high as 107 in simulation, a significant enhancement compared to the uniformly symmetry-breaking approach, which exhibits Q-factors around 25.80. The experimental transmission spectrum and the near-field scanning images firmly validate the existence of the high Q BIC mode under this strategic symmetry-breaking approach. This work may open new avenues for developing advanced THz devices with promising applications in sensing, filtering, and non-linearity in the THz domain.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"55 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141353404","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Lattice imperfections and high-harmonic generation in correlated systems 相关系统中的晶格缺陷和高频产生

New Journal of Physics Pub Date : 2024-06-12 DOI: 10.1088/1367-2630/ad5755

Thomas Hansen, Lars Bojer Madsen

引用次数: 0

Enhancing the robustness of interdependent networks by positively correlating a portion of nodes 通过将部分节点正相关来增强相互依存网络的稳健性

New Journal of Physics Pub Date : 2024-06-12 DOI: 10.1088/1367-2630/ad5753

Yuan Liang, Mingze Qi, Q. Huangpeng, Liang Yan, Xiaojun Duan

{"title":"Enhancing the robustness of interdependent networks by positively correlating a portion of nodes","authors":"Yuan Liang, Mingze Qi, Q. Huangpeng, Liang Yan, Xiaojun Duan","doi":"10.1088/1367-2630/ad5753","DOIUrl":"https://doi.org/10.1088/1367-2630/ad5753","url":null,"abstract":"\u0000 Cascading failures caused by interdependencies make modern coupled systems extremely fragile to failures. In existing network robustness enhancing methods, maximizing interlayer degree-degree correlations has been proven to be an effective way to improve the robustness of interdependent networks under random failures. Here, we propose a Portion of Nodes positively Correlated strategy (PNC) to improve network robustness by positively correlating a portion of nodes, in which the nodes that are positively correlated are selected in descending order of degree, starting at a cutoff value. Based on percolation theory, we verify the effectiveness of PNC on different networks. And find that, when the nodes with the highest degree are preferentially correlated, i.e., the cutoff value takes the maximum degree, this strategy achieves a state-of-the-art optimization effect. In particular, for interdependent scale-free networks with power-law exponent $gamma$ that satisfies $2<gamma<3$, we theoretically demonstrate that the highest Degree Preferentially Correlated mode (DPC) can maximize network robustness by changing the coupling state of the near $0$ proportion of nodes. For $gamma=3$, such a mode can make the network turn into a second-order phase transition at the collapse point. Finally, we discuss the relationship between the robustness of optimized networks and common links in real-world interdependent networks.","PeriodicalId":508829,"journal":{"name":"New Journal of Physics","volume":"128 45","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141351374","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Time crystal embodies chimeralike state in periodically driven quantum spin system 时间晶体体现了周期性驱动量子自旋系统中的类嵌合态

New Journal of Physics Pub Date : 2024-06-12 DOI: 10.1088/1367-2630/ad5757

Mahbub Rahaman, Akitada Sakurai, Analabha Roy

引用次数: 0