Journal of Low Temperature Physics最新文献_第8页

Anomalies of Critical Magnetic Behavior in ({text{La}}_{0.9}{text{Bi}}_{0.1}{text{MnO}}_{3}) Manganite ({text{La}}_{0.9}{text{Bi}}_{0.1}{text{MnO}}_{3})锰矿石临界磁性异常

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-01-23 DOI: 10.1007/s10909-025-03269-4

V. Punith Kumar

{"title":"Anomalies of Critical Magnetic Behavior in ({text{La}}_{0.9}{text{Bi}}_{0.1}{text{MnO}}_{3}) Manganite","authors":"V. Punith Kumar","doi":"10.1007/s10909-025-03269-4","DOIUrl":"10.1007/s10909-025-03269-4","url":null,"abstract":"<div>The study of critical magnetic properties of La0.9Bi0.1MnO3 is reported and discussed. The sample exhibits rhombohedral perovskite crystal structure with trivial lattice structural distortions, surprisingly maintaining the proper stoichiometry and composition as evidenced by energy-dispersive X-ray spectroscopy. The critical behavior observed in the magnetization measurements is studied using different models with proper data analysis attributed to the magnetic frustrations arising due to the inhomogeneities. The zero-field-cooled magnetization measurements below T < TK exhibit frozen ferromagnetic inhomogeneous spin agglomerates. The observed low-temperature-dependent field-cooled magnetization measurement has been approximated by considering the quadratic and non-quadratic dispersion law incorporating corrections to the Bloch’s relation. The exponents like γ and β obtained from critical scaling analysis further confirms the inhomogeneities in magnetic behavior and doesn’t correspond to any of the well-known universality class such as 3D Ising, 3D Heisenberg and mean-field models.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"218 5-6","pages":"451 - 464"},"PeriodicalIF":1.1,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143513302","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

Sensing Few Electrons Floating on Helium with High-Electron-Mobility Transistors 用高电子迁移率晶体管探测氦上漂浮的电子

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-01-22 DOI: 10.1007/s10909-024-03256-1

M. M. Feldman, G. Fuchs, T. Liu, L. A. D’Imperio, M. D. Henry, E. A. Shaner, S. A. Lyon

引用次数: 0

Temperature and Doping Dependences of the Hall Coefficient within the Spin-Fermion Model of Cuprates 铜酸盐自旋费米子模型中霍尔系数的温度和掺杂依赖性

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-01-21 DOI: 10.1007/s10909-025-03265-8

M. M. Korovushkin

引用次数: 0

Observation of Resistive Transitions in Copper Due to Proximity to a Frustrated Antiferromagnetic Insulator 铜中因接近反铁磁绝缘体而产生的电阻跃迁的观察

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-01-15 DOI: 10.1007/s10909-024-03260-5

Dyvison Pedreira Pimentel

引用次数: 0

Improvement of Helium Liquefaction Performance Based on the Temperature-Distributed Regenerative Refrigeration Method Using 3He Fluid 基于3He流体温度分布蓄热式制冷方法的氦气液化性能改进

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-01-04 DOI: 10.1007/s10909-024-03262-3

Qiang Cao, Lichun Ge, Miaomiao Wang, Yuji Chen, Pengcheng Wang, Zhiping Wang, Peng Li, Qinyu Zhao, Bo Wang, Zhihua Gan

{"title":"Improvement of Helium Liquefaction Performance Based on the Temperature-Distributed Regenerative Refrigeration Method Using 3He Fluid","authors":"Qiang Cao, Lichun Ge, Miaomiao Wang, Yuji Chen, Pengcheng Wang, Zhiping Wang, Peng Li, Qinyu Zhao, Bo Wang, Zhihua Gan","doi":"10.1007/s10909-024-03262-3","DOIUrl":"10.1007/s10909-024-03262-3","url":null,"abstract":"<div>Liquid helium has important applications in infrared wavelength detection, superconducting quantum interference, and so on. Regenerative refrigerators are generally applied for small-scale applications. However, the liquefaction efficiency of helium is not high. The main reason is the contradiction between the large sensible heat load and the limited refrigeration efficiency at 4.2 K. A novel method of temperature-distributed regenerative refrigeration, which generates the refrigeration power over a wide temperature range based on real gas effects, is theoretically studied using the 3He working fluid for the first time. The liquefaction rate and efficiency of helium is improved because of a smaller entropy generation with this temperature-distributed method. The temperature-distributed refrigeration power of the 3He working fluid is larger than that of 4He when the absolute pressure is smaller, because the critical pressure of 3He is lower; while such a refrigeration power of 3He distributes at a lower temperature range that of 4He at the same reduced pressure because the critical temperature of 3He is lower. The liquefaction rate reaches 50.5 L/d when the cold-end refrigeration power is 1.5 W. This rate is 2–3 times that of liquefying with only the cold end with 4He or 3He. Furthermore, the liquefaction efficiency (FOM) increases with the rise in pressure. The theoretical FOM is 47.7% at a reduced pressure of 61.7 (14.1 MPa), which is a 7% improvement over the case with 4He (44.7%). These results demonstrate advantages of using the temperature-distributed method with 3He, thus opening up a new avenue for further researches in helium liquefaction systems.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"218 3-4","pages":"305 - 323"},"PeriodicalIF":1.1,"publicationDate":"2025-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362095","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

Characterisation of Polarising Components at Cryogenic Temperature 低温下极化组分的表征

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2025-01-03 DOI: 10.1007/s10909-024-03259-y

Thierry Chanelière, Alexei D. Chepelianskii

{"title":"Characterisation of Polarising Components at Cryogenic Temperature","authors":"Thierry Chanelière, Alexei D. Chepelianskii","doi":"10.1007/s10909-024-03259-y","DOIUrl":"10.1007/s10909-024-03259-y","url":null,"abstract":"<div>Controlling polarisation directly at low temperature is crucial for development of optical spectroscopy techniques at sub-Kelvin temperatures, for example, in a hybrid scheme where light is fed into and collected in the cryostat by fibres that are as easy to install as electrical wiring, but where distortions in the fibre need to be compensated for by discrete polarising optical components. The latter are poorly characterised at low temperatures. So we cool down polarising components from room temperature to 4 K and monitor the evolution of the polarisation properties in this range. We test a zero-order half-wave plate, a polarising beamsplitting cube and a dichroic polariser in the optical telecommunication range at 1.5 μm. We show that the polarisation is maintained at the (10^{-4}) level within the whole temperature range. This is consistent with the typical thermal contraction of optical materials. This level of precision is sufficient for many optics experiments at low temperature. We argue that these experiments will allow the design of compact fibre-based probes for cryogenic surfaces.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 5-6","pages":"252 - 261"},"PeriodicalIF":1.4,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145161202","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

Microstructure and Properties of Superconducting Tungsten Thin Films: Influence of Substrate Temperature and Annealing temperature 超导钨薄膜的微观结构和性能：衬底温度和退火温度的影响

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-12-23 DOI: 10.1007/s10909-024-03249-0

Yu Wang, Yuanyuan Liu, Jianjie Zhang, Yifei Zhang, Zhouhui Liu, Chi Xu, Shaojun Zhang, Jianping Cheng

{"title":"Microstructure and Properties of Superconducting Tungsten Thin Films: Influence of Substrate Temperature and Annealing temperature","authors":"Yu Wang, Yuanyuan Liu, Jianjie Zhang, Yifei Zhang, Zhouhui Liu, Chi Xu, Shaojun Zhang, Jianping Cheng","doi":"10.1007/s10909-024-03249-0","DOIUrl":"10.1007/s10909-024-03249-0","url":null,"abstract":"<div>(alpha)-W thin films are widely used in superconducting transition edge sensors due to their extremely low transition temperature and weak electron–phonon coupling. However, the influence of annealing and substrate temperatures on thin film performance has not been fully understood, nor has the relationship between microstructure and thin film performance. In this study, we investigate the changes in grain size, resistivity, film stress, and transition temperature of the film by varying the annealing and substrate temperatures. Microstructure showed that annealing contributed to grain growth. With the increase in annealing temperature, the resistivity of the film decreased and the compressive stress was relieved. The minimum transition temperature reached 28.7 mK at an annealing temperature of (470 ^{circ })C. In addition, the GIXRD results showed that the preferred orientation of the films changed from (110) to (211) with the increase in the substrate temperature. (100 ^{circ }hbox {C}-230 ^{circ })C favorite to reduce film resistivity and transition temperature, and to relieve film compressive stress.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"218 3-4","pages":"258 - 267"},"PeriodicalIF":1.1,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143362202","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

Superfluid Suction Vortex Generated by Fountain Effect 喷泉效应产生的超流体吸力涡

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-12-23 DOI: 10.1007/s10909-024-03257-0

Ryusei Maeda, Ken Obara, Hideo Yano, Paul Leiderer

{"title":"Superfluid Suction Vortex Generated by Fountain Effect","authors":"Ryusei Maeda, Ken Obara, Hideo Yano, Paul Leiderer","doi":"10.1007/s10909-024-03257-0","DOIUrl":"10.1007/s10909-024-03257-0","url":null,"abstract":"<div>In viscous fluids, it is believed that a suction vortex is stable because the diffusion of the vorticity due to viscosity and the vorticity confinement due to flow toward the center are balanced. Therefore, the question of whether suction vortices are stable even in superfluidity is of academic importance. We have generated suction vortices by rotating turbines directly in low-temperature helium. However, this method has several problems; the suction flow could not be determined quantitatively, and we could not stabilize the motion of the turbine at low rotation speeds. In this study, we overcame these problems by introducing a pump using a fountain effect. The first step in this experiment was to determine the performance of the pump. Next, we applied this pump as a circulating pump for suction vortex generation. The vortex thus generated had perfect rotational symmetry as derived from elementary hydrodynamic equations, and its shape was stable in time. Therefore, we have succeeded for the first time in determining the rotational velocity field and circulation from the shape of the vortex generated by the fountain effect.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 1-2","pages":"51 - 60"},"PeriodicalIF":1.4,"publicationDate":"2024-12-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167834","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

Comments on the Origin and Evolution of the Quantum Fluids and Solids Symposia 量子流体与固体的起源与演化

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-12-18 DOI: 10.1007/s10909-024-03250-7

R. B. Hallock

引用次数: 0

Synthesis and Characterization of an Ag:Er Alloy for Metallic Magnetic Calorimeters 金属磁量热计用银铒合金的合成与表征

IF 1.1 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2024-12-17 DOI: 10.1007/s10909-024-03253-4

J. W. Song, Y. C. Cho, H. J. Kim, M. K. Lee

引用次数: 0