Chinese Physics Letters最新文献

{"title":"Critical Opalescence and Its Impact on the Jet Quenching Parameter q^","authors":"Jing Wu, Shanshan Cao, Feng Li","doi":"10.1088/0256-307x/41/3/031202","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/031202","url":null,"abstract":"Jet quenching parameter <inline-formula>\u0000<tex-math>\u0000<?CDATA $hat{q}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mover accent=\"true\"><mml:mi>q</mml:mi><mml:mo>^</mml:mo></mml:mover></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_031202_ieqn3.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> is essential for characterizing the interaction strength between jet partons and nuclear matter. Based on the quark-meson model, we develop a new framework for calculating <inline-formula>\u0000<tex-math>\u0000<?CDATA $hat{q}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mover accent=\"true\"><mml:mi>q</mml:mi><mml:mo>^</mml:mo></mml:mover></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_031202_ieqn4.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> at finite chemical potentials, in which <inline-formula>\u0000<tex-math>\u0000<?CDATA $hat{q}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mover accent=\"true\"><mml:mi>q</mml:mi><mml:mo>^</mml:mo></mml:mover></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_031202_ieqn5.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> is related to the spectral function of the chiral order parameter. A mean field perturbative calculation up to the one-loop order indicates that the momentum broadening of jets is enhanced at both high temperature and high chemical potential, and approximately proportional to the parton number density in the partonic phase. We further investigate the behavior of <inline-formula>\u0000<tex-math>\u0000<?CDATA $hat{q}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mover accent=\"true\"><mml:mi>q</mml:mi><mml:mo>^</mml:mo></mml:mover></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_031202_ieqn6.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> in the vicinity of the critical endpoint (CEP) by coupling our calculation with a recently developed equation of state that includes a CEP in the universality class of the Ising model, from which we discover the partonic critical opalescence, i.e., the divergence of scattering rate of jets and their momentum broadening at the CEP, contributed by scatterings via the <italic toggle=\"yes\">σ</italic> exchange process. Hence, for the first time, jet quenching is connected with the search of CEP.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"26 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568375","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}

{"title":"Theory for Charge Density Wave and Orbital-Flux State in Antiferromagnetic Kagome Metal FeGe","authors":"Hai-Yang Ma, Jia-Xin Yin, M. Zahid Hasan, Jianpeng Liu","doi":"10.1088/0256-307x/41/4/047103","DOIUrl":"https://doi.org/10.1088/0256-307x/41/4/047103","url":null,"abstract":"We theoretically study the charge order and orbital magnetic properties of a new type of antiferromagnetic kagome metal FeGe. Based on first-principles density functional theory calculations, we study the electronic structures, Fermi-surface quantum fluctuations, as well as phonon properties of the antiferromagnetic kagome metal FeGe. It is found that charge density wave emerges in such a system due to a subtle cooperation between electron–electron interactions and electron–phonon couplings, which gives rise to an unusual scenario of interaction-triggered phonon instabilities, and eventually yields a charge density wave (CDW) state. We further show that, in the CDW phase, the ground-state current density distribution exhibits an intriguing star-of-David pattern, leading to flux density modulation. The orbital fluxes (or current loops) in this system emerge as a result of the subtle interplay between magnetism, lattice geometries, charge order, and spin-orbit coupling (SOC), which can be described by a simple, yet universal, tight-binding theory including a Kane–Mele-type SOC term and a magnetic exchange interaction. We further study the origin of the peculiar step-edge states in FeGe, which sheds light on the topological properties and correlation effects in this new type of kagome antiferromagnetic material.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"232 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615689","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}

{"title":"Random Green’s Function Method for Large-Scale Electronic Structure Calculation","authors":"Mingfa Tang, Chang Liu, Aixia Zhang, Qingyun Zhang, Jiayu Zhai, Shengjun Yuan, Youqi Ke","doi":"10.1088/0256-307x/41/5/053102","DOIUrl":"https://doi.org/10.1088/0256-307x/41/5/053102","url":null,"abstract":"We report a linear-scaling random Green’s function (rGF) method for large-scale electronic structure calculation. In this method, the rGF is defined on a set of random states and is efficiently calculated by projecting onto Krylov subspace. With the rGF method, the Fermi–Dirac operator can be obtained directly, avoiding the polynomial expansion to Fermi–Dirac function. To demonstrate the applicability, we implement the rGF method with the density-functional tight-binding method. It is shown that the Krylov subspace can maintain at small size for materials with different gaps at zero temperature, including H₂O and Si clusters. We find with a simple deflation technique that the rGF self-consistent calculation of H₂O clusters at <italic toggle=\"yes\">T</italic> = 0 K can reach an error of ∼ 1 meV per H₂O molecule in total energy, compared to deterministic calculations. The rGF method provides an effective stochastic method for large-scale electronic structure simulation.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"9 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929695","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}

{"title":"Flat Band and η-Pairing States in a One-Dimensional Moiré Hubbard Model","authors":"R. Wang, Z. Song","doi":"10.1088/0256-307x/41/4/047101","DOIUrl":"https://doi.org/10.1088/0256-307x/41/4/047101","url":null,"abstract":"A Moiré system is formed when two periodic structures have a slightly mismatched period, resulting in unusual strongly correlated states in the presence of particle-particle interactions. The periodic structures can arise from the intrinsic crystalline order and periodic external field. We investigate a one-dimensional Hubbard model with periodic on-site potential of period <italic toggle=\"yes\">n</italic>\u0000₀, which is commensurate to the lattice constant. For large <italic toggle=\"yes\">n</italic>\u0000₀, the exact solution demonstrates that there is a midgap flat band with zero energy in the absence of Hubbard interaction. Each Moiré unit cell contributes two zero energy levels to the flat band. In the presence of Hubbard interaction, the midgap physics is demonstrated to be well described by a uniform Hubbard chain in which the effective hopping and on-site interaction strength can be controlled by the amplitude and period of the external field. Numerical simulations are performed to demonstrate the correlated behaviors in the finite-sized Moiré Hubbard system, including the existence of an <italic toggle=\"yes\">η</italic>-pairing state and bound pair oscillation. This finding provides a method to enhance the correlated effect by a spatially periodic external field.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"41 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140929541","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}

{"title":"Nontrivial Topological Phases in Ternary Borides M2XB2 (M=W, Mo; X=Co, Ni)","authors":"Danwen Yuan, Changming Yue, Yuefang Hu, Wei Zhang","doi":"10.1088/0256-307x/41/3/037304","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/037304","url":null,"abstract":"The nontrivial band topologies protected by certain symmetries have attracted significant interest in condensed matter physics. The discoveries of nontrivial topological phases in real materials provide a series of archetype materials to further explore the topological physics. Ternary borides M₂XB₂ (M = W, Mo; X = Co, Ni) have been widely investigated as the wear-resistant and high-hardness materials. Based on first-principles calculations, we find the nontrivial topological properties in these materials. Taking W₂NiB₂ as an example, this material shows the nodal line semimetal state in the absence of spin-orbit coupling. Two types of nodal lines appear near the Fermi level simultaneously. One is protected by the combined space-inversion and time-reversal symmetry, and the other is by the mirror symmetry. Part of these two-type nodal lines form nodal chains. When spin-orbit coupling is included, these nodal lines are fully gapped and the system becomes a strong topological insulator with nontrivial <italic toggle=\"yes\">Z</italic>\u0000₂ index (1;000). Our calculations demonstrate that a nontrivial spin-momentum locked surface Dirac cone appears on the <inline-formula>\u0000<tex-math>\u0000<?CDATA $(bar{1}10)$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mrow><mml:mo stretchy=\"false\">(</mml:mo><mml:mover accent=\"true\"><mml:mn>1</mml:mn><mml:mo stretchy=\"true\">¯</mml:mo></mml:mover><mml:mn>10</mml:mn><mml:mo stretchy=\"false\">)</mml:mo></mml:mrow></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_037304_ieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> surface. We also find that other isostructural ternary borides Mo₂NiB₂, Mo₂CoB₂, and W₂CoB₂ possess similar topological band structures. Therefore, our work not only enriches the understanding of band topology for ternary borides, but also lays the foundation for the further study of topological phases manipulation and potential spintronic applications in realistic materials.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"12 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311141","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}

{"title":"Analysis of Strong Coupling Constant with Machine Learning and Its Application","authors":"Xiao-Yun Wang, Chen Dong, Xiang Liu","doi":"10.1088/0256-307x/41/3/031201","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/031201","url":null,"abstract":"We investigate the nature of the strong coupling constant and related physics. Through the analysis of accumulated experimental data around the world, we employ the ability of machine learning to unravel its physical laws. The result of our efforts is a formula that captures the expansive panorama of the distribution of the strong coupling constant across the entire energy range. Importantly, this newly derived expression is very similar to the formula derived from the Dyson–Schwinger equations based on the framework of Yang–Mills theory. By introducing the Euler number <italic toggle=\"yes\">e</italic> into the functional formula of the strong coupling constant at high energies, we successfully solve the puzzle of the infrared divergence, which allows for a seamless transition of the strong coupling constant from the perturbative to the non-perturbative energy regime. Moreover, the obtained ghost and gluon dressing function distribution results confirm that the obtained strong coupling constant formula can well describe the physical properties of the non-perturbed regime. In addition, we study the quantum-chromodynamics strong coupling constant result of the Bjorken sum rule <inline-formula>\u0000<tex-math>\u0000<?CDATA ${varGamma }_{1}^{p-n}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mrow><mml:msubsup><mml:mi>Γ</mml:mi><mml:mn>1</mml:mn><mml:mrow><mml:mi>p</mml:mi><mml:mo>−</mml:mo><mml:mi>n</mml:mi></mml:mrow></mml:msubsup></mml:mrow></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_031201_ieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> and the quark–quark static energy <italic toggle=\"yes\">E</italic>\u0000₀(<italic toggle=\"yes\">r</italic>), and find that the global energy scale can effectively interpret the experimental data. The present results shed light on the puzzling properties of quantum chromodynamics and the intricate interplay of strong coupling constants at both low and high energy scales.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"22 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311037","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}

{"title":"Hybrid Skin-Topological Effect Induced by Eight-Site Cells and Arbitrary Adjustment of the Localization of Topological Edge States","authors":"Jianzhi Chen, Aoqian Shi, Yuchen Peng, Peng Peng, Jianjun Liu","doi":"10.1088/0256-307x/41/3/037103","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/037103","url":null,"abstract":"Hybrid skin-topological effect (HSTE) in non-Hermitian systems exhibits both the skin effect and topological protection, offering a novel mechanism for localization of topological edge states (TESs) in electrons, circuits, and photons. However, it remains unclear whether the HSTE can be realized in quasicrystals, and the unique structure of quasicrystals with multi-site cells may provide novel localization phenomena for TESs induced by the HSTE. We propose an eight-site cell in two-dimensional quasicrystals and realize the HSTE with eight-site nonreciprocal intracell hoppings. Furthermore, we can arbitrarily adjust the eigenfield distributions of the TESs and discover domain walls associated with effective dissipation and their correlation with localization. We present a new scheme to precisely adjust the energy distribution in non-Hermitian quasicrystals with arbitrary polygonal outer boundaries.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"21 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140316986","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}

{"title":"Constructing Hopf Insulator from Geometric Perspective of Hopf Invariant","authors":"Zhi-Wen Chang, Wei-Chang Hao, Miguel Bustamante, Xin Liu","doi":"10.1088/0256-307x/41/3/037302","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/037302","url":null,"abstract":"We propose a method to construct Hopf insulators based on the study of topological defects from the geometric perspective of Hopf invariant <italic toggle=\"yes\">I</italic>. Firstly, we prove two types of topological defects naturally inhering in the inner differential structure of the Hopf mapping. One type is the four-dimensional point defects, which lead to a topological phase transition occurring at the Dirac points. The other type is the three-dimensional merons, whose topological charges give the evaluations of <italic toggle=\"yes\">I</italic>. Then, we show two ways to establish the Hopf insulator models. One approach is to modify the locations of merons, thereby the contributions of charges to <italic toggle=\"yes\">I</italic> will change. The other is related to the number of defects. It is found that <italic toggle=\"yes\">I</italic> will decrease if the number reduces, while increase if additional defects are added. The method developed in this study is expected to provide a new perspective for understanding the topological invariants, which opens a new door in exploring and designing novel topological materials in three dimensions.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"128 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311043","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}

{"title":"An LED-Side-Pumped Intracavity Frequency-Doubled Nd,Ce:YAG Laser Producing a 2W Q-Switched Red Beam","authors":"Jianping Shen, Shaocong Xu, Peng LU, Rongrong Jiang, Wei Wang, Siwei Zhang, Fengyang Xing, Yang Chen, Liang Chen","doi":"10.1088/0256-307x/41/3/034201","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/034201","url":null,"abstract":"We report a high-average-power acousto-optic (AO) Q-switched intracavity frequency-doubled red laser based on a high-efficiency light-emitting-diode (LED) pumped two-rod Nd,Ce:YAG laser module. Under quasi-continuous wave operation conditions, a maximum output power of 1319.08 nm wavelength was achieved at 11.26 W at a repetition rate of 100 Hz, corresponding to a maximum optical efficiency of 13.9% and a slope efficiency of 17.9%. In the active Q-switched regime, the pulse energy of the laser was as high as 800 μJ at a repetition rate of 10 kHz with a pulse width of 1.5 μs. Under non-critical phase-matched KTP crystal conditions, an average power of 2.03 W of 658.66 nm through intracavity frequency-doubling was obtained at a repetition frequency of 10 kHz with a duration of 1.3 μs, and the <italic toggle=\"yes\">M</italic>\u0000² factor was measured to be about 5.8. To the best of our knowledge, this is the highest average power of an LED-pumped AO Q-switched 1319 nm laser and intracavity frequency-doubled red laser reported to date.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"8 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311083","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}

{"title":"C-Type Antiferromagnetic Structure of Topological Semimetal CaMnSb2","authors":"Bo Li, Xu-Tao Zeng, Qianhui Xu, Fan Yang, Junsen Xiang, Hengyang Zhong, Sihao Deng, Lunhua He, Juping Xu, Wen Yin, Xingye Lu, Huiying Liu, Xian-Lei Sheng, Wentao Jin","doi":"10.1088/0256-307x/41/3/037104","DOIUrl":"https://doi.org/10.1088/0256-307x/41/3/037104","url":null,"abstract":"Determination of the magnetic structure and confirmation of the presence or absence of inversion (<inline-formula>\u0000<tex-math>\u0000<?CDATA $mathcal{P}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mi mathvariant=\"script\">P</mml:mi></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_037104_ieqn1.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula>) and time reversal (<inline-formula>\u0000<tex-math>\u0000<?CDATA $mathcal{T}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mi mathvariant=\"script\">T</mml:mi></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_037104_ieqn2.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula>) symmetry is imperative for correctly understanding the topological magnetic materials. Here high-quality single crystals of the layered manganese pnictide CaMnSb₂ are synthesized using the self-flux method. De Haas–van Alphen oscillations indicate a nontrivial Berry phase of ∼ <italic toggle=\"yes\">π</italic> and a notably small cyclotron effective mass, supporting the Dirac semimetal nature of CaMnSb₂. Neutron diffraction measurements identify a C-type antiferromagnetic structure below <italic toggle=\"yes\">T</italic>\u0000_N = 303(1) K with the Mn moments aligned along the <italic toggle=\"yes\">a</italic> axis, which is well supported by the density functional theory (DFT) calculations. The corresponding magnetic space group is <italic toggle=\"yes\">Pn</italic>′<italic toggle=\"yes\">m</italic>′<italic toggle=\"yes\">a</italic>′, preserving a <inline-formula>\u0000<tex-math>\u0000<?CDATA $mathcal{P}timesmathcal{T}$?>\u0000</tex-math>\u0000<mml:math overflow=\"scroll\"><mml:mrow><mml:mi mathvariant=\"script\">P</mml:mi><mml:mo>×</mml:mo><mml:mi mathvariant=\"script\">T</mml:mi></mml:mrow></mml:math>\u0000<inline-graphic xlink:href=\"cpl_41_3_037104_ieqn3.gif\" xlink:type=\"simple\"></inline-graphic>\u0000</inline-formula> symmetry. Adopting the experimentally determined magnetic structure, band crossings near the <italic toggle=\"yes\">Y</italic> point in momentum space and linear dispersions of the Sb 5p_{\u0000<italic toggle=\"yes\">y</italic>, <italic toggle=\"yes\">z</italic>\u0000} bands are revealed by the DFT calculations. Furthermore, our study predicts the possible existence of an intrinsic second-order nonlinear Hall effect in CaMnSb₂, offering a promising platform to study the impact of topological properties on nonlinear electrical transports in antiferromagnets.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"141 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140311084","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}