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

Design and Experiment of a Helium Liquefaction Cryostat with Vibration Damping Function 具有减振功能的氦液化低温恒温器的设计与实验

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-14 DOI: 10.1007/s10909-026-03377-9

Hai-feng Zhang, Huai-kuang Ding, Xue-hua Zhang

{"title":"Design and Experiment of a Helium Liquefaction Cryostat with Vibration Damping Function","authors":"Hai-feng Zhang, Huai-kuang Ding, Xue-hua Zhang","doi":"10.1007/s10909-026-03377-9","DOIUrl":"10.1007/s10909-026-03377-9","url":null,"abstract":"<div>This paper presents the design and experimental results of a helium liquefaction system with vibration damping capabilities, tailored for synchrotron radiation light source experiments. A 4.2 K GM cryocooler was utilized as the refrigeration source, integrated with a dedicated helium liquefaction system designed to cool and liquefy helium gas. This helium liquefaction device is suitable for scientific laboratory experiments. By analyzing the process of helium liquefaction, a method to improve liquefaction efficiency was proposed. The helium liquefaction rate was increased from 8.2 L/day at 1.1 bar (charging pressure) to a maximum of 15.9 L/day at 1.5 bar. To mitigate vibration effects from the reciprocating piston motion in the GM cryocooler, specialized vibration damping devices were installed to reduce transmitted vibrations to experimental apparatus. By employing welded bellows as vibration isolators, the system’s vibration amplitude was reduced from ± 9.0 μm in the X-axis, ± 9.0 μm in the Y-axis, and ± 21.0 μm in the Z-axis to ± 0.6 μm in the X-axis, ± 0.6 μm in the Y-axis, and ± 1.7 μm in the Z-axis.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339189","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

Thermal Properties of Graphene Via Dirac Oscillator Model Under Doubly Special Relativity Framework 双狭义相对论框架下狄拉克振荡模型下石墨烯的热性质

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-14 DOI: 10.1007/s10909-026-03376-w

Abdelmalek Boumali, Nosratollah Jafari

{"title":"Thermal Properties of Graphene Via Dirac Oscillator Model Under Doubly Special Relativity Framework","authors":"Abdelmalek Boumali, Nosratollah Jafari","doi":"10.1007/s10909-026-03376-w","DOIUrl":"10.1007/s10909-026-03376-w","url":null,"abstract":"<div>This work investigates the electronic and thermodynamic properties of graphene within the framework of Doubly Special Relativity (DSR), emphasizing its role as an effective analog platform for analyzing modified dispersion relations. By incorporating the Dirac oscillator (DO) interaction and utilizing an energy-dependent effective mass for charge carriers in a magnetic field, we analyze how Planck-scale inspired deformations modify the energy spectrum and thermodynamic observables. We compare two structurally distinct DSR implementations: the Amelino–Camelia (AC) and Magueijo–Smolin (MS) models. Our results demonstrate that while the AC framework introduces significant nonlinear corrections and particle–antiparticle branch bifurcation, the MS corrections are strongly suppressed for massless carriers near the Dirac point. We establish a mapping to the Jaynes–Cummings (JC) and anti-Jaynes–Cummings (AJC) models, providing a bridge to quantum optical interpretation and trapped-ion simulations. While direct Planck-scale observations remain beyond current experimental reach, this study provides a controlled sensitivity analysis of how deformed kinematics propagate into solvable Dirac spectra within engineered analog gravity platforms.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339191","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

NMR Study on Equilateral Triangular Lattice Antiferromagnet (textrm{Ba}_{2}textrm{La}_{2}textrm{CoTe}_{2}textrm{O}_{12}) 等边三角形晶格反铁磁体的核磁共振研究 (textrm{Ba}_{2}textrm{La}_{2}textrm{CoTe}_{2}textrm{O}_{12})

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-14 DOI: 10.1007/s10909-026-03380-0

Keito Morioka, Takayuki Goto, Masari Watanabe, Yuki Kojima, Nobuyuki Kurita, Hidekazu Tanaka, Satoshi Iguchi, Takahiko Sasaki

{"title":"NMR Study on Equilateral Triangular Lattice Antiferromagnet (textrm{Ba}_{2}textrm{La}_{2}textrm{CoTe}_{2}textrm{O}_{12})","authors":"Keito Morioka, Takayuki Goto, Masari Watanabe, Yuki Kojima, Nobuyuki Kurita, Hidekazu Tanaka, Satoshi Iguchi, Takahiko Sasaki","doi":"10.1007/s10909-026-03380-0","DOIUrl":"10.1007/s10909-026-03380-0","url":null,"abstract":"<div>We report a (^{139})La-NMR study of (textrm{Ba}_{2}textrm{La}_{2}textrm{CoTe}_{2}textrm{O}_{12}), (S=1/2) equilateral triangular-lattice antiferromagnet with easy-plane anisotropy at low temperatures. This compound undergoes a magnetic phase transition at (T_textrm{N} =) 3.26 K into an ordered state with the ({120}^circ) spin structure. Under magnetic fields above 3T, (T_textrm{N}) splits into (T_textrm{N1}) and (T_textrm{N2}), which correspond to the transitions from the paramagnetic phase to the up-up-down (uud) phase and from the uud phase to the triangular coplanar phase, respectively. The NMR spin-lattice relaxation rate (1/T_1) exhibits a critical divergence at (T_textrm{N1}), indicating the onset of long-range magnetic order. At (T_textrm{N2}), the NMR-linewidth measured at 5.4 T exhibits an anomalous decrease, which we attribute to a change in the spin structure from the uud to the triangular coplanar phase.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147339186","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

Superconducting Gap Structures in Wallpaper Fermion Systems 墙纸费米子系统中的超导隙结构

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-13 DOI: 10.1007/s10909-026-03368-w

Kaito Yoda, Ai Yamakage

引用次数: 0

Entropic Weight in Cuprates: Is the Superfluid Depleted with Overdoping? 铜酸盐中的熵权：超流体是否因过量掺杂而耗尽？

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-12 DOI: 10.1007/s10909-026-03379-7

Jeffery L. Tallon

引用次数: 0

Theoretical Study on the Interplay of Spin-Density Wave and Superconductivity: Critical Temperature and the Gap-to-Tc Ratio 自旋密度波与超导相互作用的理论研究：临界温度和Gap-to-Tc比

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-12 DOI: 10.1007/s10909-026-03374-y

Pongkaew Udomsamuthirun, Arpapong Changjan, Jaturong Sukonthachat, Chatcharawan Meesubthong, Pongkan Tongkhonburi

{"title":"Theoretical Study on the Interplay of Spin-Density Wave and Superconductivity: Critical Temperature and the Gap-to-Tc Ratio","authors":"Pongkaew Udomsamuthirun, Arpapong Changjan, Jaturong Sukonthachat, Chatcharawan Meesubthong, Pongkan Tongkhonburi","doi":"10.1007/s10909-026-03374-y","DOIUrl":"10.1007/s10909-026-03374-y","url":null,"abstract":"<div>At low temperatures, strong electronic correlations in many unconventional superconductors can induce a spin-density-wave (SDW) state as a result of Fermi-surface nesting and enhanced electron–electron interactions, and such SDW order is frequently observed to compete or coexist with superconductivity in correlated materials. In this work, we investigate the coexistence of SDW order and superconductivity using the Green’s function method in the Nambu representation, incorporating both electron–phonon-mediated pairing and pairing associated with SDW order at the antiferromagnetic wave vector. Two cases of gap equations are found to yield identical expressions for the superconducting critical temperature and the zero-temperature order parameter. Our results show that as the SDW order parameter increases, a larger coupling constant is required for superconductivity to emerge. Moreover, the gap-to-Tc ratio exceeds the BCS value at intermediate SDW strength and subsequently decreases to values below the BCS limit as the ratio of the zero-temperature SDW order parameter to the superconducting gap increases.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338915","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

Impact of Gd Substitution on the Structure, Magnetic Ordering, and Magnetocaloric Response of La0.67Ca0.33MnO3 Gd取代对La0.67Ca0.33MnO3结构、磁有序和磁热响应的影响

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-11 DOI: 10.1007/s10909-026-03378-8

O. F. Seker, T. Izgi, V. S. Kolat, N. Bayri, H. Gencer, M. Pektas Kolat, S. Atalay

{"title":"Impact of Gd Substitution on the Structure, Magnetic Ordering, and Magnetocaloric Response of La0.67Ca0.33MnO3","authors":"O. F. Seker, T. Izgi, V. S. Kolat, N. Bayri, H. Gencer, M. Pektas Kolat, S. Atalay","doi":"10.1007/s10909-026-03378-8","DOIUrl":"10.1007/s10909-026-03378-8","url":null,"abstract":"<div>A comprehensive investigation of the structural, magnetic, and magnetocaloric properties of polycrystalline La0.67−xGdxCa0.33MnO3 (x = 0, 0.05, 0.1, 0.15, and 0.2), synthesized by the solid-state method, has been carried out. X-ray diffraction confirmed that all compositions crystallize in a single-phase orthorhombic Pbnm structure. A systematic decrease in the Curie temperature, from 257 K (x = 0) to 61 K (x = 0.2), was observed and attributed to the suppression of double-exchange interactions and the emergence of magnetic inhomogeneity. Most notably, the substitution of Gd led to a pronounced enhancement in the magnetic entropy change (|ΔSM|), reaching a maximum of 11.24 J/kg K under a 5 T field for the x = 0.2 composition, which stands as one of the highest values reported for manganites. In addition, a secondary anomaly in the entropy change curves, particularly at elevated fields, was associated with a field-induced metamagnetic transition arising from the coexistence of paramagnetic and antiferromagnetic states above TC. Critical behavior analysis based on Arrott plots further revealed that all samples exhibit a first-order magnetic phase transition. These simultaneous observations of exceptionally large ΔSM values and metamagnetic features highlight the potential of these rare-earth-modified manganites for high-performance magnetocaloric applications.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147338071","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

Recombination Rate of D Atoms in Solid D(_2) in the Temperature Range from 0.23 to 1.64 K D固体中D原子在0.23 ～ 1.64 K温度范围内的复合速率(_2)

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-09 DOI: 10.1007/s10909-026-03375-x

C. K. Wetzel, D. M. Lee, S. Sheludiakov, J. Ahokas, S. Vasiliev, V. V. Khmelenko

引用次数: 0

Development of Superfluid Helium-3 Bolometry Using Nanowire Resonators with SQUID Readout for the QUEST-DMC Experiment QUEST-DMC实验用SQUID读出纳米线谐振器进行超流氦-3测热

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-07 DOI: 10.1007/s10909-026-03364-0

E. Leason, L. V. Levitin, S. Autti, E. Bloomfield, A. Casey, N. Darvishi, N. Eng, P. Franchini, R. P. Haley, P. J. Heikkinen, A. Jennings, A. Kemp, J. March-Russell, A. Mayer, J. Monroe, D. Muenstermann, M. T. Noble, J. R. Prance, X. Rojas, T. Salmon, J. Saunders, J. Smirnov, R. Smith, M. D. Thompson, A. Thomson, A. Ting, V. Tsepelin, S. M. West, L. Whitehead, D. E. Zmeev, QUEST-DMC Collaboration

{"title":"Development of Superfluid Helium-3 Bolometry Using Nanowire Resonators with SQUID Readout for the QUEST-DMC Experiment","authors":"E. Leason, L. V. Levitin, S. Autti, E. Bloomfield, A. Casey, N. Darvishi, N. Eng, P. Franchini, R. P. Haley, P. J. Heikkinen, A. Jennings, A. Kemp, J. March-Russell, A. Mayer, J. Monroe, D. Muenstermann, M. T. Noble, J. R. Prance, X. Rojas, T. Salmon, J. Saunders, J. Smirnov, R. Smith, M. D. Thompson, A. Thomson, A. Ting, V. Tsepelin, S. M. West, L. Whitehead, D. E. Zmeev, QUEST-DMC Collaboration","doi":"10.1007/s10909-026-03364-0","DOIUrl":"10.1007/s10909-026-03364-0","url":null,"abstract":"<div>Superfluid helium-3 bolometers can be utilised for dark matter direct detection searches. The extremely low heat capacity of the B phase of the superfluid helium-3 at ultra-low temperatures offers the potential to reach world leading sensitivity to spin-dependent interactions of dark matter in the sub-GeV/c(^2) mass range. Here, we describe the development of bolometry using both micron scale and sub-micron diameter vibrating wire resonators, with a SQUID amplifier-based readout scheme. Characterisation of the resonators and bolometer measurements are shown, including the use of nonlinear operation and the corresponding corrections. The bolometer contains two vibrating wire resonators, enabling heat injection calibration and simultaneous bolometer tracking measurements. Coincident events measured on both vibrating wire resonators verify their response. We also demonstrate proof of concept frequency multiplexed readout. Development of these measurement techniques lays the foundations for the use of superfluid helium-3 bolometers, instrumented with vibrating nanomechanical resonators, for future low-threshold dark matter searches.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-026-03364-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337676","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of Thermal Quantum Entanglement and Quantum Teleportation Fidelity in Two-Qubit Graphene Lattices Under Polarized Electromagnetic Waves 极化电磁波下双量子位石墨烯晶格的热量子纠缠和量子隐形传态保真度优化

IF 1.4 3区物理与天体物理

Journal of Low Temperature Physics Pub Date : 2026-02-03 DOI: 10.1007/s10909-026-03370-2

F. Omari, S. El Asri, S. Mouslih, M. Jakha, B. Manaut, S. Taj

{"title":"Optimization of Thermal Quantum Entanglement and Quantum Teleportation Fidelity in Two-Qubit Graphene Lattices Under Polarized Electromagnetic Waves","authors":"F. Omari, S. El Asri, S. Mouslih, M. Jakha, B. Manaut, S. Taj","doi":"10.1007/s10909-026-03370-2","DOIUrl":"10.1007/s10909-026-03370-2","url":null,"abstract":"<div>Graphene networks are a privileged platform for investigating quantum information processes due to their unique electronic structure and the unconventional diffusion behavior of electrons near Dirac points. In this work, we examine the impact of an external electromagnetic field on quantum teleportation and on the degree of thermal entanglement of two identical qubits in the ground state of a graphene network. These qubits are modeled based on the electronic states localized near the Dirac points (K and (K')) of the Brillouin zone. The interaction between qubits is described by an elastic collision process, resulting in the derivation of an effective Hamiltonian and the corresponding density matrix. In this context, we examine the teleportation performance and the entanglement degree of the two-qubit system using three main indicators: the average teleportation fidelity (F_A), the concurrence C, and the entanglement of formation (E_f). Our results show that an electromagnetic field significantly enhances quantum teleportation and the degree of entanglement, even as the temperature increases. Furthermore, it is demonstrated that linear polarization of the field outperforms circular and elliptical polarizations in optimizing these phenomena. These results show how important electromagnetic fields are for maintaining quantum correlations in graphene networks. They also open up exciting possibilities for using advanced quantum communication protocols and developing quantum computing devices based on solid-state systems such as graphene.</div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"222 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2026-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336508","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