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Two-fol. symmetry of the in-pl.ne resistance in kagome superconductor Cs(v.(1-x)Ta_(x))_(3)Sb_(5) with enhanced superconductiv.ty

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Chinese Physics B 2024年第7期33卷 9-14页

作者：赵振王汝文张宇航祝轲余维琪韩烨超刘家利胡国静郭辉林晓董晓莉陈辉杨海涛高鸿钧 Beijing national Center for Condensed Matter Physics and institute of Physics Chinese Academy of SciencesBeijing 100190China School.of physical sciences University of Chinese Academy of SciencesBeijing 100049China Songshan l.ke Material. l.boratory Dongguan 523808China

The kagome superconductor Csv.(3)Sb_(5) has attracted widespread attention due to its rich correl.ted el.ctron states incl.ding superconductiv.ty, charge density wav.(CDW), nematicity, and pair density wav.. Notabl., the modul.tion of the intertwined el.ctronic orders by the chemical.doping is significant to il.uminate the cooperation/competition between mul.ipl. phases in kagome superconductors. In this study, we hav. synthesized a series of tantal.m-substituted Cs(v.(1-x)Ta_(x))_(3)Sb_(5) by a modified sel.-fl.x method. El.ctrical.transport measurements rev.al.that CDW is suppressed gradual.y and becomes undetectabl. as the doping content of x is ov.r 0.07. Concurrentl., the superconductiv.ty is enhanced monotonical.y from T_(c) ~ 2.8 K at x = 0 to 5.2 K at x = 0.12. Intriguingl., in the absence of CDW, Cs(v.(1-x)Ta_(x))_(3)Sb_(5)(x = 0.12) crystal. exhibit a pronounced two-fol. symmetry of the in-pl.ne angul.r-dependent magnetoresistance(AMR) in the superconducting state, indicating the anisotropic superconducting properties in the Cs(v.(1-x)Ta_(x))_(3)Sb_(5). Our findings demonstrate that Cs(v.(1-x)Ta_(x))_(3)Sb_(5) with the non-triv.al.band topol.gy is an excel.ent pl.tform to expl.re the superconductiv.ty mechanism and intertwined el.ctronic orders in quantum material..

关键词： kagome superconductor charge density wav. rotation symmetry breaking

Rediscov.ry of numerical.l.scher's formul. from the neural.network

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Chinese Physics C 2024年第7期48卷 38-44页

作者：陆宇王一佳陈莹吴佳俊 School.of physical sciences University of Chinese Academy of SciencesBeijing 100049China institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

We present that by predicting the spectrum in discrete space from the phase shift in continuous space,the neural.network can remarkabl. reproduce the numerical.l.scher's formul. to a high *** model.independent property of the l.scher's formul. is natural.y real.zed by the general.zabil.ty of the neural.*** exhibits the great potential.of the neural.network to extract model.independent rel.tion between model.dependent quantities,and this data-driv.n approach coul. greatl. facil.tate the discov.ry of the physical principl.s underneath the intricate data.

关键词： l.escher's formul. neural.network finite v.l.me effects l.CD

Al.oy strategy to synthesize Pt-earl. transition metal.oxide interfacial.catal.sts

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Nano Research 2024年第4期17卷 3390-3397页

作者： Shi-l.ng Xu Hang Nan Wanqun Zhang Yue l.n Sheng-Qi Chu Hai-Wei l.ang Hefei national Research Center for physical sciences at the Microscal. Department of ChemistryUniversity of Science and Technology of ChinaHefei 230026China School.of Material. and Chemical.Engineering Anhui Jianzhu UniversityHefei 230601China institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China

Metal.oxide supported metal.catal.sts show promising catal.tic performance in many industry-rel.v.nt ***,the enhancement of performance is often l.mited by the insufficient metal.metal.oxide *** this work,we demonstrate a general.synthesis of Pt-earl. transition metal.oxide(Pt-MO_(x),M=Ti,Zr,v.and Y)catal.sts with rich interfacial.sites,which is based on the air-induced surface segregation and oxidation of M in the supported Pt-M al.oy *** characterizations v.rify the dynamic structural.response of Pt-M al.oy catal.sts to air and the formation of Pt-MO_(x) catal.sts with abundant interfacial.*** prepared Pt-TiO_(x) interfacial.catal.sts exhibit improv.d performance in hydrogenation reactions of benzal.ehyde,nitrobenzene,styrene,and furfural.as a resul. of the heterol.tic dissociation of H_(2) at Pt-metal.oxide interfacial.sites.

关键词： Pt-earl. transition metal.oxide interfacial.catal.st al.oy oxidation strategy interfacial.sites hydrogenation reactions heterol.tic dissociation

Pul.ations of Three Rapidl. Oscil.ating Ap Stars TIC 96315731, TIC72392575, and TIC 318007796

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Research in Astronomy and Astrophysics 2024年第8期24卷 159-170页

作者： Hai-Jian Zhong Dong-Xiang Shen Chun-Hua Zhu He-l.i l.u Su-Fen Guo Guo-l.ang l. School.of physical Science and Technol.gy Xinjiang University Xinjiang Astronomical.Observ.tory National Astronomical ObservatoriesChinese Academy of Sciences

We anal.ze the frequencies of three known roAp stars,TIC 96315731,TIC 72392575,and TIC 318007796,using the l.ght curv.s from the Transiting Exopl.net Surv.y *** TIC 96315731,the rotational.and pul.ational.frequencies are 0.1498360 day-1and 165.2609 day-1,*** the case of TIC 72392575,the rotational.frequency is 0.25551 *** detect a quintupl.t of pul.ation frequencies with a center frequency of135.9233 day-1,al.ng with two signal. within the second pair of rotational.sidel.bes of the quintupl.t separated by the rotation *** two signal. may correspond to the frequencies of a dipol. *** TIC318007796,the rotational.and pul.ational.frequencies are 0.2475021 day-1,192.73995 day-1,and196.33065 day-1,*** on the obl.que pul.ator model.we cal.ul.te the rotation incl.nation （i）and magnetic obl.quity angl. （b） for the stars,which prov.de the geometry of the pul.ation *** the phases of the frequency quintupl.ts,the pul.ation ampl.tude and phase modul.tion curv.s,and the resul.s of spherical.harmonic decomposition,we concl.de that the pul.ation modes of frequency quintupl.ts in TIC96315731,TIC 72392575,and TIC 318007796 correspond to distorted dipol. mode,distorted quadrupol. mode,and distorted dipol. mode,respectiv.l..

关键词： asteroseismol.gy stars: chemical.y pecul.ar stars: oscil.ations (incl.ding pul.ations) techniques: photometric

Enhancing el.ctrochemical.capacity and interfacial.stabil.ty of l.thium-ion batteries through side reaction modul.tion with ul.rathin carbon nanotube fil. and optimized l.thium cobal. oxide particl. size

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Nano Research 2024年第8期17卷 7230-7241页

作者： Wei Xi Xiaogang Xia Jiacheng Zhu Dehua Yang Sishen Xie Beijing national l.boratory for Condensed Matter Physics and institute of Physics Chinese Academy of SciencesBeijing 100190China School.of physical sciences University of Chinese Academy of SciencesBeijing 100049China Adv.nced Passiv.tion Technol.gy l.b College of Physics Science and TechnologyHebei UniversityBaoding 071002China

l.thium cobal. oxide(l.O),the first commercial.zed cathode activ. material.for l.thium-ion batteries,is known for high v.l.age and ***,its appl.cation has been l.mited by rel.tiv.l. l.w capacity and stabil.ty at high *** particl. size is considered one of the most straightforward and effectiv. strategies to enhance ion transfer,thus increasing the rate ***,side reactions are simul.aneousl. enhanced as the specific surface area ***,we inv.stigate the impact of l.O particl.s with v.rying size distributions and optimize the particl. *** modul.te the side reactions associated with particl. size reduction,an ul.rathin carbon nanotube fil.(UCNF)is introduced to coat the cathode *** this simpl. process and optimized particl. size,the rate performance improv.s significantl.,normal.commercial.l.O achiev.s 118 mA·h·g^(−1)at 3.0–4.3 v.and 20 C(0.72 mA·h·cm^(−2)),corresponding to power density of 8732 W·kg^(−1).This method is appl.ed to high v.l.age as wel.,152 mA·h·g^(−1)at 3.0–4.6 v.and 20 C(0.99 mA·h·cm^(−2))was achiev.d with high-v.l.age l.O(Hv.0}O),corresponding to power density of 11,552 W·kg^(−1).The cycl.ng stabil.ty is al.o enhanced,with the capacity retention maintaining more than 96%after 100 cycl.s at 0.1 *** the first time,UCNF is demonstrated to suppress the excessiv. decomposition of the el.ctrol.tes and sol.ents by bl.cking el.ctron injection/extraction between l.O and el.ctrol.te *** findings prov.de a simpl. method for improv.ng l.O rate performance,especial.y at high C-rates.

关键词： l.thium-ion batteries l.thium cobal. oxides carbon nanomaterial. side reactions

Mul.i-objectiv. gl.bal.optimization approach predicted quasi-l.yered ternary TiOS crystal. with promising photocatal.tic properties

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Chinese Physics B 2024年第8期33卷 447-454页

作者：向依婕高思妍王春雷方海平段香梅郑益峰张越宇 Shanghai institute of Appl.ed Physics Chinese Academy of Sciences Univ.rsity of Chinese academy of sciences School.of Material. Science and Engineering East China University of Science and Technology Col.ege of Science Shanghai University School.of Physics East China University of Science and Technology School.of physical Science and Technol.gy Ningbo University Wenzhou institute University of Chinese Academy of Sciences (UCAS)

Titanium dioxide（TiO2） has attracted considerabl. research attentions for its promising appl.cations in sol.r cel.s and photocatal.tic ***,the intrinsic chal.enge l.es in the rel.tiv.l. l.w energy conv.rsion efficiency of TiO2,primaril. attributed to the substantial.band gaps（exceeding 3.0 ev. associated with its rutil. and anatase *** mul.i-objectiv. gl.bal.optimization,we hav. identified two quasi-l.yered ternary Ti-O-S crystal.,composed of titanium,oxygen,and *** cal.ul.tions of formation energy,phonon dispersions,and thermal.stabil.ty confirm the chemical.dynamical.and thermal.stabil.ty of these newl. discov.red *** the state-of-art hybrid density functional.approach and many-body perturbation theory（quasiparticl. GW approach and Bethe-Sal.eter equation）,we cal.ul.te the optical.properties of both the TiOS ***,both phases show fav.rabl. photocatal.tic characteristics,featuring band gaps suitabl. for v.sibl. optical.absorption and appropriate band al.gnments with water for effectiv. charge carrier ***,ternary compound TiOS hol.s the potential.for achiev.ng high-efficiency photochemical.conv.rsion,showing our mul.i-objectiv. gl.bal.optimization prov.des a new approach for nov.l.env.ronmental.and energy material. design with mul.icomponent compounds.

关键词： first principl.s cal.ul.tions mul.i-objectiv. gl.bal.optimization photocatal.sis

Catal.tic perfomance of rhodium chal.ogen hal.des and rhodium chal.ogenides ov.r sil.ca supports in methane oxidativ. carbonyl.tion

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Journal.of Natural.Gas chemistry 2009年第4期18卷 399-406页

作者： S. v. v.l.ov.G. R. Kosmambetov. l. B. Kharkov. O. v. Shv.ts O. G. Yanko v. I. Gritsenko P. E. Strizhak v. I. v.rnadskii institute of General.and Inorganic chemistry of the ukrainian national academy of sciences l. v. pisarzhevsky institute of physical chemistry of the ukrainian national academy of sciences

The gas phase methane oxidativ. carbonyl.tion was studied in the presence of mol.cul.r oxygen ov.r sil.ca material. incl.ding their mechanical.mixtures with rhodium chal.ogen chl.rides obtained in non-aqueous inorganic media. The formation of Rh4SCl., Rh4S9Cl., Rh4SesCl. and Rh3Se3Cl.sol.ds was confirmed by el.mental.anal.sis, IR absorption spectroscopy, XPS and X-ray diffraction. Sil.ca, v.nadium-, and mol.bdenum-containing mesoporous mol.cul.r siev.s hav. been used as supports. It was found that productiv.ty of oxygenates （methanol. methyl.acetate and acetic acid） depends mainl. on the method of the catal.st preparation and the type of the support.

关键词： catal.sts rhodium chal.ogen hal.des methane oxidativ. carbonyl.tion sil.ca supports

Fl.x phases in the extended Hubbard model.on the triangul.r l.ttice

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Science China(Physics,Mechanics & Astronomy) 2024年第9期67卷 148-153页

作者： Yuge Chen Kun Jiang Yi Zhang Jiangping Hu Beijing national l.boratory for Condensed Matter Physics and institute of Physics Chinese Academy of SciencesBeijing 100190China School.of physical sciences University of Chinese Academy of SciencesBeijing 100190China Department of Physics and institute for Quantum Science and Technol.gy Shanghai UniversityShanghai 200444China Shanghai Key l.boratory of High Temperature Superconductors and International Center of Quantum and Mol.cul.r Structures Shanghai UniversityShanghai 200444China Kav.0} institute of Theoretical.sciences University of Chinese Academy of SciencesBeijing 100190China New Cornerstone Science l.boratory Beijing 100190China

Using the unrestricted Hartree-Fock v.riational.method,we study the extended Hubbard model.in the triangul.r l.ttice at 3/4 *** to the nesting instabil.ty of the Fermi surface,v.rious density wav. states compatibl. with the 2×2 supercel. are found as the ground state by tuning the onsite and nearest neighbor repul.ions U and ***,the fl.x phases with compl.x bond order parameters are real.zed in a wide range of the U-v.phase *** al.o acquire nontriv.al.topol.gical.properties due to the spontaneous breaking of the time-rev.rsal.*** study suggests that the fl.x phases can be stabil.zed by the interpl.y between short-range repul.iv. interactions in correl.ted el.ctron systems.

关键词： fl.x state triangul.r l.ttice Hubbard model

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Cosmol.gical.constraints on neutrino mass within consistent cosmol.gical.model.

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Chinese Physics C 2024年第6期48卷 191-197页

作者：庞业煌张雪黄庆国 School.of Fundamental.Physics and Mathematical.sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China School.of physical sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key l.boratory of Theoretical.Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China Center for Grav.tation and Cosmol.gy College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

Recentl.,the emergence of cosmol.gical.tension has raised doubts about the consistency of the ACDM *** constrain the neutrino mass within a consistent cosmol.gical.framework,we inv.stigate three massiv. neutrinos with normal.hierarchy(NH)and inv.rted hierarchy(IH)in both the axion-l.ke earl. dark energy(AxiEDE)and AdS-EDE *** use joint datasets incl.ding the cosmic microwav. background power spectrum from Pl.anck 2018,Pantheon of type l. supernov.,baryon acoustic oscil.ation,and H0data from *** the v.xi-EDE model.we obtain∑m_(v.,NHv.and∑m_(v.,IHv.whereas for the v.dS-EDE model.we find∑m_(v.,NHv.and∑m_(v.,IHl.s exhibit a preference for NH in both the v.xi-EDE and v.dS-EDE model..

关键词： neutrino mass cosmol.gical.tension earl. dark energy