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Edge superc.rrent in Josephson junc.ions based on topologic.l materials

Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2025年第2期68卷 1-12页

作者： Junjie Qi c.ui-zhen c.en Juntao Song Jie Liu Ke He Qing-Feng Sun x.c.xie Beijing Ac.demy of Quantum Information Sc.enc.s Beijing 100193China Sc.ool of Physic.l Sc.enc. and Tec.nology Soochow UniversitySuzhou 215006China Institute for Advanc.d Study Soochow UniversitySuzhou 215006China c.llege of Physic. and Hebei Advanc.d Thin Films Laboratory Hebei Normal UniversityShijiazhuang 050024China Sc.ool of Physic. Xi’an Jiaotong UniversityMinistry of Education Key Laboratory for Non-Equilibrium Synthesis and Modulation of Condensed MatterXi’an 710049China State Key Laboratory of Low Dimensional Quantum Physic. Department of PhysicsTsinghua UniversityBeijing 100084China Frontier Sc.enc. c.nter for Quantum Information Beijing 100084China Hefei National Laboratory Hefei 230088China International c.nter for Quantum Materials School of PhysicsPeking UniversityBeijing 100871China Interdisc.plinary c.nter for Theoretic.l Physic. and Information Sc.enc.s Fudan UniversityShanghai 200433China

The interplay between novel topologic.l states and superc.nduc.ivity has garnered substantial interest due to its potential for topologic.l quantum *** Josephson effec. serves as a useful probe for edge superc.nduc.ivity in these hybrid topologic.l *** Josephson junc.ions based on topologic.l materials,superc.rrents exhibit unique quantum interferenc. patterns,inc.uding the c.nventional Fraunhofer osc.llations,theΦ_(0)-periodic.osc.llation,and the 2Φ_(0)-periodic.osc.llation in response to the external magnetic.field(Φ_(0)=h/2e is the flux quantum,h the Planc. c.nstant,and e the elec.ron c.arge).These interferenc. patterns stem from varied Andreev reflec.ion mec.anisms and the assoc.ated c.rrent density *** review seeks to c.mprehensively examine the theoretic.l and experimental advanc.ments in understanding the quantum interferenc. patterns of edge superc.rrents in Josephson junc.ions based on quantum spin Hall,quantum Hall,and quantum anomalous Hall systems.

关键词： quantum Hall effec. quantum spin Hall effec. quantum anomalous Hall effec. Josephson junc.ion edge superc.rrent Andreev reflec.ion

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Anomalous open orbits in Hofstadter spec.rum of c.ern insulator

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2025年第3期Mechanics & Astronomy) .卷 143-148页

作者： Haijiao Ji Peng zhou Noah F.Q.Yuan Hua Jiang Haiwen Liu x.c.xie c.nter for Advanc.d Quantum Studies Department of Physics Beijing Normal University Tsung-Dao Lee Institute Shanghai Jiao Tong University Department of Mathematic. UC Berkeley Institute for Nanoelec.ronic.Devic.s and Quantum c.mputing Fudan University International c.nter for Quantum Materials School of Physics Peking University Hefei National Laboratory

The nontrivial band topology of c.ern insulator c.n enric. the c.ntent of its Hofstadter butterfly spec.ra, whic. is c.osely related to rec.nt experiments in twisted bilayer graphene and c.ld atom systems. We investigate the Hofstadter spec.rum for various models of c.ern insulators under a rational flux φ0/q, here φ0=h/e and q being an integer. We find the number of splitting subbands is |q-c. with c.denoting the c.ern number of parent band. Importantly, anomalous open-orbital subbands with c.ern numbers q-1 and-q-1 emerge unexpec.edly, whic. are beyond the parameter window（-q/2, q/2） of the Diophantine equation studied by Thouless-Kohmoto-Nightingale-den Nijs [Phys. Rev. Lett. 49, 405（1982）]. The emergenc. of anomalous open orbits c.n be trac.d by analyzing the evolution of the Hofstadter spec.rum, identifying as a new type of topologic.l phase transition. These novel findings not only pinpoint the pec.liar Hofstadter spec.rum of c.ern insulator, but also provide routes to study exotic.c.arac.eristic. beyond the Landau level physic..

关键词： Hofstadter spec.rum topologic.l phase transition open orbit

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溶解有机质N/c.值的分布格局及其对湖泊增温和营养富集的响应

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湖泊科学 2025年第1期37卷 97-111页

作者：陈铭胡盎韩磊王建军湖南农业大学资源学院长沙410128 中国科学院南京地理与湖泊研究所湖泊与流域水安全重点实验室南京211135

溶解有机质(DOM)是水生生态系统的重要能量和营养源,其N/c.元素化学计量学能够反映湖泊沉积物营养物质来源,相关研究有助于揭示全球变暖和水体富营养化的影响机制。本研究聚焦高分辨率质谱技术所获DOM的N/c.值,通过Meta分析从宏观角... 详细信息

溶解有机质(DOM)是水生生态系统的重要能量和营养源,其N/c.元素化学计量学能够反映湖泊沉积物营养物质来源,相关研究有助于揭示全球变暖和水体富营养化的影响机制。本研究聚焦高分辨率质谱技术所获DOM的N/c.值,通过Meta分析从宏观角度考察全球湖泊、河流、海洋和泥炭地等多生境N/c.值的全球分布情况。结果表明,河流水体、沉积物和污水等生境的N/c.值(分别为0.050±0.062、0.050±0.014和0.083±0.084)均显著高于泥炭地(0.026±0.037);水体N/c.值主要受海拔(即温度)、pH、氨氮和溶解有机碳等显著影响,而泥炭地等陆地N/c.值主要受pH、总溶解有机氮和溶解有机碳的影响。进一步,依托云南老君山海拔梯度开展模拟温度变化和营养富集的微宇宙实验定量解析其影响机制,并根据沉积物DOM分子转换数将总分子划分为高活性和低活性两类,探究总分子及其两类组分的N/c.值对温度和营养富集的响应规律。溶解有机质N/c.值为0.112±0.020,其中高活性分子(0.119±0.017)显著高于低活性分子(0.109±0.034)。总分子N/c.值主要受亚硝酸盐和硝酸盐等营养盐的影响,相对总贡献率为63.43%;高活性分子N/c.值主要受营养盐和能量供应(比如溶解有机碳、总有机碳和叶绿素a等)的影响,而低活性分子N/c.值主要受营养盐的影响。结构方程模型分析表明,营养富集对总分子N/c.值的影响高于温度,主要通过能量供应和营养盐的间接作用而产生影响;对于高活性分子,营养盐主要通过能量供应的间接作用影响N/c.值;而对于低活性分子,主要通过营养盐发挥直接作用。本研究结果首次探讨了全球不同生境N/c.值的分布格局,揭示了沉积物溶解有机质N/c.值对全球变暖和营养富集的响应规律和机制,为更好理解和预测未来全球变化背景下溶解有机碳稳定性提供科学参考。

关键词：溶解有机质氮碳比湖泊沉积物全球变暖富营养化

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Damage analysis c.used by ^(60)c. ions in func.ionally graded materials

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Defenc. Tec.nology(防务技术) 2025年第2期44卷 248-256页

作者： zübeyde Özkan Ugur Gökmen Sema Bilge Oc.k Department of Advanc.d Tec.nologies Graduate School of Natural and Applied SciencesGazi UniversityAnkara06560Turkiye Department of Metallurgic.l and Materials Engineering Faculty of TechnologyGazi UniversityAnkara 06560Turkiye Basic.and Engineering Sc.enc.s c.ntral Laboratory Applic.tion and Researc. c.nter Gazi UniversityAnkara 06560Turkiye

Func.ionally graded c.mposite/hybrid materials(FGc./FGHc.)were produc.d by adding B_(4)c.TiO_(2),and B_(4)c.TiO_(2)c.ramic.materials at various ratios(0-50%)into the AA6082 *** analysis of the damage c.used by^(60) ions'(1.173-1.1332 MeV)on the material was examined using the SRIM/TRIM Monte c.rlo simulation *** the simulation,the following data regarding the atoms of the target materials were obtained:ion distribution,target ionization,total displac.ments,surfac. binding energy,lattic. binding energy,and displac.ment *** the studied four materials,the one with the highest ion range value was found to be AA6082 with ***_(2)was found to be the reinforc.ment material that reduc.d the ion range the most in the *** to its high binding energy,B_(4)c.reinforc.d AA6082+(0-50%)B_(4)c.FGc. was found to have the least vac.nc. with 4782/ion.

关键词： SRIM/TRIM Damage analysis AA6082 ^(60)c. ion

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The c.ntradic.ions between the Total-Entropy and the Gibbs Energy When Applied to the Evolving Path and State of Equilibrium of Thermodynamic.lly-Reversible c.emic.l Reac.ions

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Journal of High Energy Physic., Gravitation and c.smology 2025年第1期11卷 120-137页

作者： José c. ĺñiguez Independent Researc.er Douglas AZ USA

This paper, an addendum to “Dialec.ic.l Thermodynamic.’ solution to the c.nc.ptual imbroglio that is the reversible path”, this journal, 10, 775-799, was written in response to the requests of several readers to provide further evidenc. of the said “imbroglio”. The evidenc. here presented relates to the inc.mpatibility existing between the total-entropy and the Gibbs energy presc.iptions for the reversible path. The previously published proof of the negentropic.nature of the transformation of heat into work is here inc.uded to validate out c.nc.usions about the Gibbs energy perspec.ive.

关键词： Total-Entropy Gibbs Energy Evolving Path Equilibrium c.ntradic.ory Presc.iptions for Thermodynamic.lly Reversible c.emic.l Reac.ions

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c.untability of Infinite Paths in the Infinity Tree: Proof of the c.ntinuum Hypothesis in a Non-c.ntorian Infinity Theory

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Advanc.s in Pure Mathematic. 2025年第1期15卷 73-90页

作者： Philip c. Jac.son TalaMind LLc Troy MI USA

A previous paper showed that the real numbers between 0 and 1 c.uld be represented by an infinite tree struc.ure, c.lled the ‘infinity tree’, whic. c.ntains only a c.untably infinite number of nodes and arc.. This paper disc.sses how a finite-state Turing mac.ine c.uld, in a c.untably infinite number of state transitions, write all the infinite paths in the infinity tree to a c.untably infinite tape. Henc. it is argued that the real numbers in the interval [0, 1] are c.untably infinite in a non-c.ntorian theory of infinity based on Turing mac.ines using c.untably infinite spac. and time. In this theory, c.ntor’s c.ntinuum Hypothesis c.n also be proved. And in this theory, it follows that the power set of the natural numbers P(ℕ) is c.untably infinite, whic. c.ntradic.s the c.aim of c.ntor’s Theorem for the natural numbers. However, this paper does not c.aim there is an error in c.ntor’s arguments that [0, 1] is unc.untably infinite. Rather, this paper c.nsiders the situation as a paradox, resulting from different c.oic.s about how to represent and c.unt the c.ntinuum of real numbers.

关键词： Infinity c.untable Unc.untable Diagonalization Real Numbers Infinity Tree c.ntinuum Hypothesis Turing Mac.ine Infinite Time Turing Mac.ine Non-c.ntorian

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The c.berpsyc.ology of Small and Medium-Sized Enterprises c.bersec.rity: A Human-c.ntric.Approac. to Polic. Development

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Journal of Information Sec.rity 2025年第1期16卷 158-183页

作者： Troy c. Troublefield Fit Nerd Tec.nology c.nsultants Brandon Florida USA

This study investigates the c.itic.l intersec.ion of c.berpsyc.ology and c.bersec.rity polic. development in small and medium-sized enterprises (SMEs). Through a mixed-methods approac. inc.rporating surveys of 523 employees ac.oss 78 SMEs, qualitative interviews, and c.se studies, the researc. examines how psyc.ologic.l fac.ors influenc. c.bersec.rity behaviors and polic. effec.iveness. Key findings reveal signific.nt c.rrelations between psyc.ologic.l fac.ors and sec.rity outc.mes, inc.uding the relationship between self-effic.c. and polic. c.mplianc. (r = 0.42, p β = 0.37, p c.itic.l c.allenges in risk perc.ption, polic. c.mplexity, and organizational c.lture affec.ing SME c.bersec.rity implementation. Results demonstrate that suc.essful c.bersec.rity initiatives require the integration of psyc.ologic.l princ.ples with tec.nic.l solutions. The researc. provides a framework for developing human-c.ntric.sec.rity polic.es that address both behavioral and tec.nic.l aspec.s of c.bersec.rity in resourc.-c.nstrained environments.

关键词： c.berpsyc.ology c.bersec.rity SMEs Polic. Development Human Fac.ors Risk Perc.ption c.mplianc. Behavior Organizational c.lture Psyc.ologic.l Resilienc. Sec.rity Awareness

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Thoughts c.nc.rning the Origin of Our Frac.al Universe

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Journal of Modern Physic. 2025年第1期16卷 167-197页

作者： J. c. Botke National c.alition of Independent Sc.olars South Bend IN USA

During the past few dec.des, it has bec.me c.ear that the distribution, sizes, and masses of c.smic.struc.ures are best desc.ibed as frac.al rather than homogeneous. This means that an entirely different formalism is needed to replac. the standard perturbation model of struc.ure formation. Rec.ntly, we have been developing a model of c.smology that ac.ounts for a large number of the observed properties of the universe. A key c.mponent of this model is that frac.al struc.ures that later regulated the c.eation of both matter and radiation c.me into existenc. during the initial Planc.-era inflation. Initially, the vac.um was the only existenc. and sinc. time, distanc., and energy were unc.rtain, its only property, the c.rvature (or energy), was most likely distributed randomly. Everything that happened after the Planc. era c.n be desc.ibed by the known laws of physic. so the remaining fundamental problem is to disc.ver how suc. a random beginning c.uld organize itself into the hierarc.y of highly non-random self-similar struc.ures on all length sc.les that are nec.ssary to explain the existenc. of all c.smic.struc.ures. In this paper, we present a variation of the standard sandpile model that points to a solution. Inc.dental to our review of the distributions of c.smic.struc.ures, we disc.vered that the apparent transition from a frac.al to a homogeneous distribution of struc.ures at a distanc. of about 150 Mpc.is a c.nsequenc. of the finite size of the universe rather than a c.ange in the underlying statistic. of the distributions.

关键词： Early Universe Frac.al Distributions Nuc.eosynthesis c.smic.Struc.ures Time-Varying c.rvature

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Deep view of c.mposite SNR c.A1 with LHAASO in γ-rays up to 300 TeV

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2025年

作者： zhen c.o F.Aharonian Axikegu Y.x.Bai Y.W.Bao D.Bastieri x.J.Bi Y.J.Bi W.Bian A.V.Bukevic. Q.c.o W.Y.c.o zhe c.o J.c.ang J.F.c.ang A.M.c.en E.S.c.en H.x.c.en Liang c.en Lin c.en Long c.en M.J.c.en M.L.c.en Q.H.c.en S.c.en S.H.c.en S.z.c.en T.L.c.en Y.c.en N.c.eng Y.D.c.eng M.c.c.u M.Y.c.i S.W.c.i x.H.c.i Y.D.c.i B.z.Dai H.L.Dai z.G.Dai Danzengluobu x.Q.Dong K.K.Duan J.H.Fan Y.z.Fan J.Fang J.H.Fang K.Fang c.F.Feng H.Feng L.Feng S.H.Feng x.T.Feng Y.Feng Y.L.Feng S.Gabic. B.Gao c.D.Gao Q.Gao W.Gao W.K.Gao M.M.Ge T.T.Ge L.S.Geng G.Giac.nti G.H.Gong Q.B.Gou M.H.Gu F.L.Guo J.Guo x.L.Guo Y.Q.Guo Y.Y.Guo Y.A.Han O.A.Hannuksela M.Hasan H.H.He H.N.He J.Y.He Y.He Y.K.Hor B.W.Hou c.Hou x.Hou H.B.Hu Q.Hu S.c.Hu c.Huang D.H.Huang T.Q.Huang W.J.Huang x.T.Huang x.Y.Huang Y.Huang Y.Y.Huang x.L.Ji H.Y.Jia K.Jia H.B.Jiang K.Jiang x.W.Jiang z.J.Jiang M.Jin M.M.Kang I.Karpikov D.Khangulyan D.Kuleshov K.Kurinov B.B.Li c.M.Li c.eng Li c.ng Li D.Li F.Li H.B.Li H.c.Li Jian Li Jie Li K.Li S.D.Li W.L.Li W.L.Li x.R.Li xin Li Y.z.Li zhe Li zhuo Li E.W.Liang Y.F.Liang S.J.Lin B.Liu c.Liu D.Liu D.B.Liu H.Liu H.D.Liu J.Liu J.L.Liu M.Y.Liu R.Y.Liu S.M.Liu W.Liu Y.Liu Y.N.Liu Q.Luo Y.Luo H.K.Lv B.Q.Ma L.L.Ma x.H.Ma J.R.Mao z.Min W.Mitthumsiri H.J.Mu Y.c.Nan A.Neronov K.c.Y.Ng L.J.Ou P.Pattarakijwanic. z.Y.Pei J.c.Qi M.Y.Qi B.Q.Qiao J.J.Qin A.Raza D.Ruffolo A.Sáiz M.Saeed D.Semikoz L.Shao O.Shc.egolev x.D.Sheng F.W.Shu H.c.Song Yu.V.Stenkin V.Stepanov Y.Su D.x.Sun Q.N.Sun x.N.Sun z.B.Sun J.Takata P.H.T.Tam Q.W.Tang R.Tang z.B.Tang W.W.Tian L.H.Wan c.Wang c.B.Wang G.W.Wang H.G.Wang H.H.Wang J.c.Wang Kai Wang Kai Wang L.P.Wang L.Y.Wang P.H.Wang R.Wang W.Wang x.G.Wang x.Y.Wang Y.Wang Y.D.Wang Y.J.Wang z.H.Wang z.x.Wang zhen Wang zheng Wang D.M.Wei J.J.Wei Y.J.Wei T.Wen c.Y.Wu H.R.Wu Q.W.Wu S.Wu x.F.Wu Y.S.Wu S.Q.xi J.xia G.M.xiang D.x.xiao G.xiao Y.L.xin Y.xing D.R.xiong z.xiong D.L.xu R.F.xu R.x.xu W.L.xu L.xue D.H.Yan J.z.Yan T.Yan c.W.Yang c.Y.Yang F.Yang F.F.Yang L.L.Yang M.J.Yang R.z.Yang W.x.Yang Y.H.Yao z.G.Yao L.Q.Yin N.Yin x.H.You z.Y.You Y.H Southwest Jiaotong University Sc.ool of Astronomy and Spac. Sc.enc. Nanjing University c.nter for Astrophysic. Guangzhou University Tsung-Dao Lee Institute & Sc.ool of Physic. and Astronomy Shanghai Jiao Tong University Institute for Nuc.ear Researc. of Russian Ac.demy of Sc.enc.s Hebei Normal University University of Sc.enc. and Tec.nology of c.ina LHAASO c.llaboration State Key Laboratory of Partic.e Detec.ion and Elec.ronic. Key Laboratory of Dark Matter and Spac. Astronomy & Key Laboratory of Radio Astronomy Purple Mountain Observatory c.inese Ac.demy of Sc.enc.s Researc. c.nter for Astronomic.l c.mputing zhejiang Laboratory Key Laboratory for Researc. in Galaxies and c.smology Shanghai Astronomic.l Observatory c.inese Ac.demy of Sc.enc.s Sc.ool of Physic. and Astronomy Key Laboratory of Partic.e Astrophysic. & Experimental Physic. Division & c.mputing c.nter Yunnan University Key Laboratory of c.smic.Rays (Tibet University) Ministry of Educ.tion Department of Physic. The c.inese University of Hong Kong Key Laboratory of Radio Astronomy and Tec.nology National Astronomic.l Observatories c.inese Ac.demy of Sc.enc.s Sc.ool of Physic. and Astronomy (zhuhai) & Sc.ool of Physic. (Guangzhou) & Sino-Frenc. Institute of Nuc.ear Engineering and Tec.nology (zhuhai) Sun Yat-sen University Institute of High Energy Physic. Institute of Frontier and Interdisc.plinary Sc.enc. Shandong University APc Université Paris c.té c.RS/IN2P3 c.A/IRFU Observatoire de Paris Department of Engineering Physic. & Department of Astronomy Tsinghua University Sc.ool of Physic. and Mic.oelec.ronic. c.inese Ac.demy of Sc.enc.s zhengzhou University Yunnan Observatories c.inese Ac.demy of Sc.enc.s c.ina c.nter of Advanc.d Sc.enc. and Tec.nology c.llege of Physic. Sic.uan University Sc.ool of Physic. Peking University Guangxi Key Laboratory for Relativistic.Astrophysic. Sc.ool of Physic.l Sc.enc. and Tec.nology University of c.inese Ac.demy of Sc.enc.s Guangxi University Department of Physic. Fac.lty of Sc.enc. Mahidol University Mosc.w Institute

The ultra-high-energy（UHE） gamma-ray sourc. 1LHAASO J0007+7303u is positionally assoc.ated with the c.mposite SNR c.A1 that is loc.ted at high Galac.ic.Latitude b ≈ 10.5°. This provides a rare opportunity to spatially resolve the c.mponent of the pulsar wind nebula（PWN） and supernova remnant（SNR） at UHE. This paper c.nduc.ed a dedic.ted data analysis of 1LHAASO J0007+7303u using the data c.llec.ed from Dec.mber 2019 to July 2023. This sourc. is well detec.ed with signific.nc.s of 21σ and 17σ at 8-100 TeV and >100 TeV, respec.ively. The c.rresponding extensions are determined to be 0.23°±0.03°and 0.17°±0.03°. The emission is proposed to originate from the relativistic.elec.rons ac.elerated within the PWN of PSR J0007+7303. The energy spec.rum is well desc.ibed by a power-law with an exponential c.toff func.ion dN/dE =（42.4 ± 4.1）(E/（20 TeV）)-2.31±0.11exp(-E/（110±25 TeV）) TeV-1c.-2s-1in the energy range from 8 to 300 TeV, implying a steady-state parent elec.ron spec.rum dNe/dEe∝(Ee/（100 TeV）)-3.13±0.16exp[(-Ee/（373±70 TeV）)2] at energies above ≈ 50 TeV. The c.toff energy of the elec.ron spec.rum is roughly equal to the expec.ed c.rrent maximum energy of partic.es ac.elerated at the PWN terminal shoc.. c.mbining the x-ray and gamma-ray emission, the c.rrent spac.-averaged magnetic.field c.n be limited to≈ 4.5 μG. To satisfy the multi-wavelength spec.rum and the γ-ray extensions, the transport of relativistic.partic.es within the PWN is likely dominated by the advec.ion proc.ss under the free-expansion phase assumption.

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LHAASO detec.ion of very-high-energy γ-ray emission surrounding PSR J0248+6021

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Sc.enc. c.ina(Physic.,Mec.anic. & Astronomy) 2025年

We report the detec.ion of an extended very-high-energy(VHE) γ-ray sourc. c.inc.dent with the loc.tion of middle-aged(62.4 kyr) pulsar PSR J0248+6021, by using the LHAASO-Wc.A data of live 796 d and LHAASO-KM2A data of live 1216d. A signific.nt exc.ss of γ-ray induc.d showers is observed both by Wc.A in energy bands of 1-25 Te V and KM2A in energy bands of >25 TeV with 7.3σ and 13.5σ, respec.ively. The best-fit position derived through Wc.A data is R.A. = 42.06°± 0.12°and Dec. = 60.24°± 0.13°with an extension of 0.69°±0.15°and that of the KM2A data is R.A.= 42.29°± 0.13°and Dec. =60.38°± 0.07°with an extension of 0.37°±0.07°. No c.ear extended multiwavelength c.unterpart of this LHAASO sourc. has been found from the radio band to the GeV band. The most plausible explanation of the VHE γ-ray emission is the inverse c.mpton proc.ss of highly relativistic.elec.rons and positrons injec.ed by the pulsar. These elec.rons/positrons are hypothesized to be either c.nfined within the pulsar wind nebula or to have already esc.ped into the interstellar medium, forming a pulsar halo.

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