Journal of Low Temperature Physics最新文献_第10页

Tunable Photon Blockade Within the Coupled Tripartite Hybrid System 耦合三方混合系统中的可调谐光子阻滞

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-07-19 DOI: 10.1007/s10909-025-03321-3

Shurui Yan, Junbin Liu, Yueming Wang, Tingxian Zhang

{"title":"Tunable Photon Blockade Within the Coupled Tripartite Hybrid System","authors":"Shurui Yan, Junbin Liu, Yueming Wang, Tingxian Zhang","doi":"10.1007/s10909-025-03321-3","DOIUrl":"10.1007/s10909-025-03321-3","url":null,"abstract":"<div><p>In this paper, we studied the photon blockade (PB) effect within a fully coupled tripartite hybrid system, where a two-level atom is integrated into a cavity optomechanical system. By applying the Schrieffer–Wolff transformation, the tripartite problem is effectively converted into a bipartite problem. The resulting effective Hamiltonian features multi-adjustable parameters: the detunings among the atomic transition frequency, the cavity resonance frequency, the driving field frequency, and the driving amplitude. By means of the probability amplitude method and the quantum master equation method, we investigated the PB effects of the system under varying detunings and driving amplitude. Furthermore, the results show that the PB effect can be achieved within a broader detuning range when the driving amplitude increases. It is noteworthy that the two-level atom plays a non-negligible role in the PB effect because it induces a cavity frequency shift, thereby providing an additional adjustable parameter for the system to optimize the PB effect. Our findings hold instructive and practical value for the design and optimization of relevant experiments in the field of quantum optics.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"221 1-6","pages":"160 - 171"},"PeriodicalIF":1.4,"publicationDate":"2025-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Rotating Quantum Droplets in Low Dimensions 低维旋转量子液滴

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-07-16 DOI: 10.1007/s10909-025-03319-x

K. Hernández, E. Castellanos

引用次数: 0

Static Magnetic Properties of Cryogel® and Pyrogel® at Low Temperatures and in High Magnetic Fields 低温和强磁场下Cryogel®和Pyrogel®的静态磁性能

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-07-11 DOI: 10.1007/s10909-025-03317-z

Caeli L. Benyacko, Garrett T. Hauser, Raven J. Rawson, Alan J. Sherman, Quinton L. Wiebe, Krittin Poottafai, Daniel R. Talham, Mark W. Meisel

引用次数: 0

Coherence Length and Transport Critical Current Density in Y3Ba5Cu8O18-δ/Co Composite Superconductor Y3Ba5Cu8O18-δ/Co复合超导体的相干长度和输运临界电流密度

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-07-11 DOI: 10.1007/s10909-025-03320-4

Ipsita Mukherjee, Ajay Kumar Ghosh

引用次数: 0

Top-Loading 4He Sorption Refrigerator 顶装式吸收式冰箱

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-07-09 DOI: 10.1007/s10909-025-03313-3

Dong-Hun Chae, Bongyeon Won, Jaewan Choi

引用次数: 0

Asymmetric Rate and Its Impact on Communication Protocol Dynamics in Coupled Double Quantum Dot Systems 非对称速率及其对耦合双量子点系统通信协议动力学的影响

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-07-09 DOI: 10.1007/s10909-025-03315-1

Younes Moqine, Brahim Adnane, Aziz Khribach, Abdelghani El Houri, Ayyoub El Mouatasim, Rachid Houça

引用次数: 0

Numerical Study on the Contact Characteristics of Multi-stage Superconducting Cables Under Tensile Strain 拉应变作用下多级超导电缆接触特性的数值研究

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-06-30 DOI: 10.1007/s10909-025-03316-0

Sitongyan Li, Zhiwen Zhou, Zhiwen Gao

{"title":"Numerical Study on the Contact Characteristics of Multi-stage Superconducting Cables Under Tensile Strain","authors":"Sitongyan Li, Zhiwen Zhou, Zhiwen Gao","doi":"10.1007/s10909-025-03316-0","DOIUrl":"10.1007/s10909-025-03316-0","url":null,"abstract":"<div><p>Superconducting cables with complex multi-stage helical structures are essential components of the superconducting magnet systems of the International Thermonuclear Experimental Reactor. These cables often experience contact issues that can adversely affect their conductive properties. This study introduces a three-dimensional numerical model designed to accurately analyze the contact characteristics of multi-stage superconducting cables subjected to tensile strain. The model begins by defining the multi-stage geometry of the cable, and then evaluates the distribution of contact pressures and contact regions across individual strands. The numerical model was validated through comparison with existing reference data. An average contact force is introduced to quantify the magnitude of contact force on each strand. The study analyzes the effects of variations in the helical pitches of each stage of the cable on contact characteristics, as well as the influence of changes in the helical pitches of lower-stage cables on the contact characteristics of higher-stage cables. This research enhances the understanding of contact characteristics in multi-stage superconducting cables and provides valuable insights for optimizing the design of advanced hierarchical helical structures.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"221 1-6","pages":"83 - 97"},"PeriodicalIF":1.4,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Giant Negative Temperature Coefficient of Resistance and Magnetotransport in Antiferromagnetic CaMnO3 反铁磁CaMnO3中电阻和磁输运的巨负温度系数

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-06-26 DOI: 10.1007/s10909-025-03312-4

Haochen Wang, Gefei Lu, Weishi Tan, Junran Li, Kunpeng Su, Shuai Huang, Lin Yang, Haiou Wang

{"title":"Giant Negative Temperature Coefficient of Resistance and Magnetotransport in Antiferromagnetic CaMnO3","authors":"Haochen Wang, Gefei Lu, Weishi Tan, Junran Li, Kunpeng Su, Shuai Huang, Lin Yang, Haiou Wang","doi":"10.1007/s10909-025-03312-4","DOIUrl":"10.1007/s10909-025-03312-4","url":null,"abstract":"<div><p>CaMnO<sub>3</sub>, a perovskite manganite known for its antiferromagnetic (AFM) and other physical properties, has underexplored transport properties and temperature coefficient of resistance (TCR). We report exceptional charge transport phenomena in orthorhombic CaMnO<sub>3</sub>, revealing a record negative temperature coefficient of resistance (TCR = − 31.8% K⁻<sup>1</sup> at 21 K) for antiferromagnetic insulators. Magnetic characterization shows a Néel temperature (T<sub>N</sub>) of 81.5 K. This magnetic transition govern distinct charge transport regimes, variable-range hopping (VRH) below T<sub>N</sub> and small polaron (SP) conduction above T<sub>N</sub>, demonstrating the existence of magnetic-electric coupling. Remarkably, the material exhibits field-independent TCR stability up to 6 T and significant magnetoresistance (MR = − 17.5% at 22 K). These findings demonstrate CaMnO<sub>3</sub> potential for antiferromagnetic spintronic applications, particularly in magnetic sensors and spin-engineered thermal detection technologies in extreme environments.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"221 1-6","pages":"19 - 40"},"PeriodicalIF":1.4,"publicationDate":"2025-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Simulation and Experimental Study on the Pre-cooling Performance of the Condenser in Helium Sorption Cooler 氦气吸附冷却器冷凝器预冷性能的仿真与实验研究

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-06-25 DOI: 10.1007/s10909-025-03311-5

TianShuo Liu, XiaoYu Cui, LiHao Lu, KongKuai Ying, KangJun Liu, ZhenHua Jiang, ShaoShuai Liu

{"title":"Simulation and Experimental Study on the Pre-cooling Performance of the Condenser in Helium Sorption Cooler","authors":"TianShuo Liu, XiaoYu Cui, LiHao Lu, KongKuai Ying, KangJun Liu, ZhenHua Jiang, ShaoShuai Liu","doi":"10.1007/s10909-025-03311-5","DOIUrl":"10.1007/s10909-025-03311-5","url":null,"abstract":"<div><p>Helium sorption coolers are widely used for achieving sub-kelvin temperatures due to their advantages of no moving parts, simple structure, and high reliability. While research has primarily focused on system design and sorption characteristics, studies on the condensation process of helium gas in these coolers remain limited. In this study, a three-dimensional simulation model is developed based on a laboratory helium sorption cooler prototype using helium-4 (4He) as the working fluid. The cooler reaches a minimum temperature of 827 mK with a holding time of 20 h. Experimental validation confirms the high accuracy of the model. The study analyzes the flow dynamics of liquid helium during condensation. Liquid helium flows along the narrow walls of the condenser heat exchanger, enters the evaporator through the pump tube, and evaporates, lowering the evaporator temperature. The evaporated helium gas then rises through the center of the pump tube. The study also examines the effect of pre-cooling temperature and operating pressure on the cooling rate. A decrease in pre-cooling temperature from 3.3 to 3.2 K leads to a sharp increase in the cooling rate, with cooling time dropping from 167 to 123 s. As the pre-cooling temperature further drops, the cooling time continues to decrease, but the impact on the cooling rate diminishes. Similarly, increasing the operating pressure from 37 to 41 kPa accelerates the cooling process initially, but the impact lessens as pressure continues to rise.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"221 1-6","pages":"1 - 18"},"PeriodicalIF":1.4,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145230542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0

Superconductivity in Re-Based Hexagonal C14 Laves Alloys TRe(_{2}) (T = Zr and Hf) re基六方C14合金TRe (_{2}) （T = Zr和Hf）的超导性

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-06-22 DOI: 10.1007/s10909-025-03310-6

Junbao He, Jianyu Li, Shishi Ma, Xuechao He, Jingyi Zhang, Chenbing Zhao, Yu Fu, Congbin Liu, Yongsong Luo, Hui Liang, Hao Shi

{"title":"Superconductivity in Re-Based Hexagonal C14 Laves Alloys TRe(_{2}) (T = Zr and Hf)","authors":"Junbao He, Jianyu Li, Shishi Ma, Xuechao He, Jingyi Zhang, Chenbing Zhao, Yu Fu, Congbin Liu, Yongsong Luo, Hui Liang, Hao Shi","doi":"10.1007/s10909-025-03310-6","DOIUrl":"10.1007/s10909-025-03310-6","url":null,"abstract":"<div><p>The superconductors with Kagome lattice have recently attracted significant interest due to their unconventional superconducting properties. Here, we present a comprehensive investigation of the superconducting properties of the Re-based hexagonal C14 Laves alloys TRe<span>(_{2})</span> (T = Zr and Hf), which contain a hexagonal diamond lattice of T atoms and a breathing Kagome lattice of Re atoms. The electrical resistivity, magnetization, and specific heat measurements confirm type-II bulk superconductivity with T<span>(_{C})</span> = 6.1 K for ZrRe<span>(_{2})</span> and 5.8 K for HfRe<span>(_{2})</span>. The superconducting parameters, such as the lower and upper critical field, the coherence length, the penetration depth, the electron–phonon coupling constant, and the density of electronic states at Fermi energy level, are comparable with those of other hexagonal C14 Laves compounds with the same crystal structure. In particular, the values of these parameters are quite close to those of the BCS theoretical framework, suggesting that both ZrRe<span>(_{2})</span> and HfRe<span>(_{2})</span> are weakly coupled type-II superconductors as other hexagonal C14 Laves alloys.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 3-6","pages":"294 - 305"},"PeriodicalIF":1.4,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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}

引用次数: 0