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cooper Molecules: Second Pairing of cooper Pairs in Gapless Superconductor CeCoIn5

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Chinese Physics Letters 2019年第10期36卷 67-71页

作者： Jiang Hong Man Ze Cheng School of Physics Huazhong University of Science and TechnologyWuhan 430074

We establish a quantum field theory of phase transitions in gapless superconductor *** is found that uniform cooper pair gases with pure gradient interactions with negative coefficient can undergo a Bardeen–cooper–Schrieffer(BCS)condensation below a critical *** the BCS condensation state,bare cooper pairs with opposite wave vectors are bound into cooper molecules,and uncoupled bare cooper pairs are transformed into a new kind of quasiparticle,i.e.,the dressed *** cooper molecule system is a condensate or a superfluid,and the dressed particle system is a normal *** critical temperature is derived *** critical temperature of the superconductor CeCoIn5 is obtained to be Tc=2.289 K,which approaches the experimental *** transition from the BCS condensation state to the normal state is a first-order phase transition.

关键词： cooper superconductor critical

Controlling Excitation Inversion of a cooper Pair Box Interacting with a Nanomechanical Resonator

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Chinese Physics Letters 2012年第8期29卷 20-24页

作者： C.Valverde H.C.B.de Oliveira A.T.Avelar B.Baseia Instituto de Química Universidade de Brasília70919-970BrasíliaDFBrazil Universidade Estadual de Goiás Rod.BR 15375132-903 AnápolisGOBrazil Universidade Paulista Rod.BR 153km 774845-090 GoianiaGOBrazil Instituto de Física Universidade Federal de Goiás74001-970 GoianiaGOBrazil

We investigate the action of time-dependent detunings upon the excitation inversion of a cooper pair box interacting with a nanomechanical *** method employs the Jaynes–Cummings model with damping,assuming different decay rates of the cooper pair box and various fixed and time-dependent *** is shown that,when the presence of damping plus constant detunings destroys the collapse/revival effects,convenient choices of time-dependent detunings allow one to reconstruct such events in a perfect *** is also shown that the mean excitation of the nanomechanical resonator is more robust against damping of the cooper pair box for convenient values of time-dependent detunings.

关键词： cooper tuning excitation

The discovery of T–B cell lineages:An interview with Professor Max D cooper

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hLife 2023年第1期1卷 3-7页

作者： Chen Dong Max D cooper Shanghai Immune Therapy Institute Shanghai Jiao Tong UniversityShanghaiChina Institute for Immunology Tsinghua UniversityBeijingChina School of Medicine Emory UniversityGeorgiaUSA

In the early 1960s,despite a general understanding of antibodies and immunoglobulins,their source and their relationship with anti-infection immunity remained largely ***,this changed with the groundbreaking discoveries of *** D cooper,professor at Emory University School of *** the 1960s,*** D cooper discovered the existence of two different lymphoid lineages,B and T cells,which are now widely recognized as the cornerstone components of the adaptive immune system.B and T cells are responsible for humoral and cellular immunity,*** discovery served as the foundation of modern ***,*** D cooper shares his inspiring journey,from career choice to research experiences,as well as offering sage advice to aspiring immunologists.

关键词： cooper Max immunity

On the cooper Pairing:the Origin of Superconductivity

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High Technology Letters 1996年第1期2卷 84-87页

作者：范江弟 Y.M.Malozovsky Dept.of Physics Southern University and A & M CollegeBaton RougeLouisiana 70813USA

Taking into account correlations in a layered two-dimensional（2D）Fermi liquid,aCoulomb-type interaction induces pairing if particle-hole excitations are taken into *** quasi-particle pairing force is analogous to the resonating valence bond（RVB）of elec-trons in a hydrogen or positronium molecule-like *** is turned out that scatteringdiagrams from this model allow to evaluate the vertex function Γ.Tc is hence calculated byusing the pole condition Γ-1=*** has been found out that Tc can reach quite high values andgives rise to the bell shape,and is related to the particle density,interlayer distance,dielec-tric constant and band *** numbers:74.65.+n,***.,***.,***.

关键词： cooper Pairing Origin of Superconductivity

利用cooper NU-14试验系统评价沥青混合料疲劳性能

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华南理工大学学报（自然科学版） 2009年第7期37卷 52-56页

作者：万成张肖宁虞将苗华南理工大学土木与交通学院广东广州510640

目前国内采用的室内疲劳试验方法主要是间接拉伸法(即劈裂试验).鉴于其在加载方式与路面实际受力状态方面存在较大差别、实际开裂模式与理论开裂位置经常不一致,笔者尝试使用一种四点弯曲疲劳试验系统(即cooper NU-14试验系统)评价沥青... 详细信息

目前国内采用的室内疲劳试验方法主要是间接拉伸法(即劈裂试验).鉴于其在加载方式与路面实际受力状态方面存在较大差别、实际开裂模式与理论开裂位置经常不一致,笔者尝试使用一种四点弯曲疲劳试验系统(即cooper NU-14试验系统)评价沥青混合料的疲劳性能.文中详细介绍了试验设备、试件制作,试验参数设定,试验加载整个过程,对采用不同沥青类型的混合料以及SMA的疲劳性能进行了试验及定量对比分析.结果表明:该试验系统能有效地评价非均匀材质的沥青混合料疲劳性能,沥青结合料性质和集料级配对沥青混合料的疲劳性能都有非常重要的影响.

关键词：沥青混合料四点弯曲疲劳性能 cooper NU-14

产品系列亮相——MINI CONCEPT ACEMAN、全电动MINI cooper SE敞篷车与SPIKE

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世界汽车 2023年第4期 10-15页

作者：赫炎邱洪涛(设计) 不详

“MINI在第二十届国际汽车工业展览会上展示了其宽阔的产品系列,MINI的粉丝们可以期待体验很多精彩。全电动MINI cooper SE敞篷车在上海举行了全球首秀仪式。凭借MINI Concept Aceman,MINI首次展示了一种全新的汽车概念:采用全新设计的... 详细信息

“MINI在第二十届国际汽车工业展览会上展示了其宽阔的产品系列,MINI的粉丝们可以期待体验很多精彩。全电动MINI cooper SE敞篷车在上海举行了全球首秀仪式。凭借MINI Concept Aceman,MINI首次展示了一种全新的汽车概念:采用全新设计的全电动驱动。MINI全新打造的萌宠Spike从2022年起迎来了数字化生活。此外,MINI敞篷海滨版还致敬MINI敞篷车30周年纪念日。来自John cooper Works品牌,在亚洲特别成功的一流运动车型也亮相上海车展。”

关键词：上海车展敞篷车全电动 cooper 电动驱动

全新电动MINI cooper MINI的魔法

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轿车情报 2023年第6期 24-25页

作者：徐倩不详

近日,全新电动MINI cooper于慕尼黑迎来世界首秀。作为下一代MINI家族首款纯电动产品,全新电动MINI cooper更加清晰地凸显了品牌精髓标志性的极简设计和卡丁车般的驾驶乐趣。由此,MINI将开启品牌进化新阶段,向2030年实现全面电动化大步... 详细信息

近日,全新电动MINI cooper于慕尼黑迎来世界首秀。作为下一代MINI家族首款纯电动产品,全新电动MINI cooper更加清晰地凸显了品牌精髓标志性的极简设计和卡丁车般的驾驶乐趣。由此,MINI将开启品牌进化新阶段,向2030年实现全面电动化大步迈进。

关键词：电动化 cooper 卡丁车纯电动标志性

cooper对质心定向运动速度的空间分布规律及“邻近效应”

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低温与超导 2001年第4期29卷 63-65页

作者：邢怀民岳筱萍新乡师范高等专科学校河南453000 新乡医学院物理教研室河南453003

在零场下 ,由超导电流密度的两种表达形式 ,导出了超导载流子质心定向运动速度的空间分布规律 ,并由毕萨定律定性地解释了“邻近效应”

关键词：质心定向运动速度空间分布超导电流密度邻近效应超导载流子超导电子超导现象 cooper

Influence of Ca Content on Binding Energy and cooper Pairing in Y1-xCaxBa2Cu3O7-δCompound

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World Journal of Condensed Matter Physics 2015年第1期5卷 18-26页

作者： Bassam M. Mustafa Abbas H. Rostam Department of Physics College of Science Mosul University Mosul Iraq

In this research, the influence of calcium content on the binding energy and cooper pairing is investigated for the high temperature superconducting Y1-xCaxBa2Cu3O7-δ compound where x = 0 - 0.2). This is done by using model considering that the formation of cooper pairs happens during tunneling mechanism of holes between the two CuO2 layers in the YCBCO crystal which are considered as forming adjacent potential wells. In this work, we make some modifications on the mentioned model and a modified equation for the binding energy as a function of Ca concentration is formulated to study the effect of Ca content by considering the change in the distance between the CuO2 layer as a function of Ca. The calculated results agree very well with experimental results. This happens because the Ca2+ substitution for Y3+ leads to decreasing the distance between the two CuO2 layers and hence potential energy of the system will be decreased. This leads to decreasing the binding energy between the cooper pairs, and decreasing the distance between the two CuO2 layers increasing the tunneling probability of holes between the two CuO2 layers and thus increasing conduction mechanism and thus increasing current density, but this will decrease the energy gap and as a result decrease the critical temperature. The calculated results agree very well with experimental results.

关键词： Superconductor Binding Energy Formation of cooper Pairing cooper Pairing in HTSC