Journal of Low Temperature Physics最新文献

{"title":"On the Magnetotransport Properties and Griffith Phase in the (({varvec{L}}{varvec{a}},{{varvec{G}}{varvec{d}})}_{1.4}({{varvec{C}}{varvec{a}},{varvec{S}}{varvec{r}})}_{1.6}{mathbf{M}mathbf{n}}_{2}{mathbf{O}}_{7}) Double-Layered Manganites","authors":"Radjia Belguet,&nbsp;Nabil Mahamdioua,&nbsp;Faiza Meriche,&nbsp;Fatih Denbri,&nbsp;Jose A. Alonso,&nbsp;Jose L. Martinez,&nbsp;Sevgi Polat-Altintas,&nbsp;Cabir Terzioglu","doi":"10.1007/s10909-025-03284-5","DOIUrl":"10.1007/s10909-025-03284-5","url":null,"abstract":"<div><p>The double-layered manganite <span>({La}_{1.2}{Gd}_{0.2}{Ca}_{1.2}{Sr}_{0.4}{Mn}_{2}{O}_{7})</span> was prepared by the solid-state reaction route, and its structural, microstructural, magnetic, electrical, and magnetotransport properties were investigated. Rietveld refinement analysis of the X-ray diffractogram shows that the structure is indexed in a tetragonal structure with an I4/mmm space group with an impurity phase. The microstructure was examined using scanning electron microscopy. The purity of the sample was examined by the energy-dispersive X-ray spectroscopy investigation. In the context of magnetic measurements, inverse susceptibility, hysteresis loop, and the magnetic behavior of the compound are discussed in detail. The sample displays a phase transition from ferromagnetic (FM) to paramagnetic (PM) at <span>({T}_{C})</span>, which is equal to 290.13 K. Additionally a Griffith phase (GP) was identified and was found to be 339 K. The sample can be thought of as spin-glass-like since a significant divergence was observed at low temperatures between the magnetization curves M (T) in the zero-field cooling (ZFC) and in the field cooling (FC) modes. The electrical resistivity under an applied magnetic field of 1 T exhibits a metal–insulator transition (<span>({T}_{MI})</span>) at 152.98 K. The magnetoresistance was observed to decrease with increasing temperature, peaking at 23% at 11 K. The electrical resistivity in the ferromagnetic region (<span>(T &lt; T_{MI})</span>) has been found to be a combination of residual resistivity and resistivities due to the weak localization, and to the electron–electron, while the adiabatic small polaron and variable range hopping models may be used to explain the resistivity data at high temperature in paramagnetic region (<span>(T&gt; T_{MI})</span>).</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"123 - 144"},"PeriodicalIF":1.1,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888649","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}

{"title":"Study of Magnetic and Thermal Properties of Graphene by Tsallis Formalism: Deformed of the Heisenberg Model","authors":"Chaofan Hu,&nbsp;Jie Zhang","doi":"10.1007/s10909-025-03292-5","DOIUrl":"10.1007/s10909-025-03292-5","url":null,"abstract":"<div><p>A simple nonrelativistic model is introduced based on the deformed of the Heisenberg algebra. In this model, the commutator of momenta is proposed proportional to the pseudospin. The low-energy excitations of graphene are derived by using this model. The Landau problem has been solved by taking into account a uniform magnetic field perpendicular to the plane. Then, the Tsallis non-additive formalism is employed to obtain the probability and the partition function for two branches, the positive and negative. Finally, the magnetic susceptibility and thermodynamic properties of graphene are determined. The findings reveal that the magnetic susceptibility has a positive value and shows a paramagnetic behavior in each branch. The susceptibility in the negative branch has a lower value in comparison to the positive branch for any values of non-extensive parameter. The specific heat displays a peak structure. For a given non-extensive parameter, the peak position of the specific heat occurs at a particular temperature in each branch. The results show that both parameters, temperature and non-extensive parameter, have important roles in magnetic susceptibility and thermal properties of the system.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"209 - 225"},"PeriodicalIF":1.1,"publicationDate":"2025-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888637","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}

{"title":"MISTRAL: Science Perspectives and Performance Forecasts","authors":"G. Isopi,&nbsp;E. Barbavara,&nbsp;E. S. Battistelli,&nbsp;P. de Bernardis,&nbsp;F. Cacciotti,&nbsp;V. Capalbo,&nbsp;A. Carbone,&nbsp;E. Carretti,&nbsp;D. Ciccalotti,&nbsp;F. Columbro,&nbsp;A. Coppolecchia,&nbsp;A. Cruciani,&nbsp;G. D’ Alessandro,&nbsp;M. De Petris,&nbsp;F. Govoni,&nbsp;L. Lamagna,&nbsp;E. Levati,&nbsp;P. Marongiu,&nbsp;A. Mascia,&nbsp;S. Masi,&nbsp;E. Molinari,&nbsp;M. Murgia,&nbsp;A. Navarrini,&nbsp;A. Novelli,&nbsp;A. Occhiuzzi,&nbsp;A. Orlati,&nbsp;A. Paiella,&nbsp;E. Pappalardo,&nbsp;G. Pettinari,&nbsp;F. Piacentini,&nbsp;T. Pisanu,&nbsp;S. Poppi,&nbsp;I. Porceddu,&nbsp;A. Ritacco,&nbsp;M. R. Schirru,&nbsp;G. Vargiu","doi":"10.1007/s10909-025-03277-4","DOIUrl":"10.1007/s10909-025-03277-4","url":null,"abstract":"<div><p>The MIllimeter Sardinia radio Telescope Receiver based on Array of Lumped elements (MISTRAL) KIDs is a millimeter camera operating at 90GHz that was recently installed on the Sardinia Radio Telescope (SRT) as part of the SRT-HighFreq program, which aims to expand the capabilities of the radio telescope up to the W-band. After technical and scientific commissioning (2023–2024), MISTRAL will be open to proposals from scientists as a facility instrument. MISTRAL provides a wide 4’ field of view, sampled at a resolution of 12” with approximately 400 kinetic inductance detectors. The sky in the W-band is well explored by CMB experiments; however, their resolution is limited to about 1’. Using large single-dish radio telescopes like SRT or the Green Bank Telescope allows to probe angular scales down to 10–12”, allowing scientists to obtain new data and complementary information in multiple scientific cases. In this contribution, we will review observational perspectives and performance forecasts of MISTRAL, based on laboratory measurements of the noise properties, for selected scientific cases such as galactic science and high-resolution measurements of the Sunyaev–Zel’Dovich effect in galaxy clusters and in the cosmic web.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"79 - 86"},"PeriodicalIF":1.1,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-025-03277-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888577","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}

{"title":"Effects of Conical Geometry on Approximate Solutions Under Modified Pöschl-Teller Potential and Shannon Entropy","authors":"Faizuddin Ahmed,&nbsp;Abdelmalek Bouzenada,&nbsp;Allan R. P. Moreira","doi":"10.1007/s10909-025-03282-7","DOIUrl":"10.1007/s10909-025-03282-7","url":null,"abstract":"<div><p>In this study, we investigate the behavior of non-relativistic quantum particles interacting with a modified Pöschl-Teller potential in the backdrop of a topological defect created by global monopoles. We derive the radial equation of the Schrödinger wave equation through a wave function ansatz and obtain an approximate <span>(ell ne 0)</span>-state eigenvalue solution by employing the Nikiforov-Uvarov method. Our analysis demonstrates that the presence of a global monopole affects both the energy eigenvalue and the wave functions of non-relativistic quantum particles, deviating from the behavior observed in flat space with this potential. Furthermore, we calculate the Shannon entropy for this quantum system and evaluate how the existence of the topological defect and potential influences it.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"87 - 102"},"PeriodicalIF":1.1,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888589","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}

{"title":"Influence of Fe/Mo Stoichiometry on Structural and Magnetic Properties in (hbox {Sr}_2hbox {Fe}_xhbox {Mo}_{2-x}hbox {O}_6): A Theoretical and Experimental Study","authors":"Naman A. Naushahi,&nbsp;I. Angervo,&nbsp;H. Huhtinen,&nbsp;M. Lastusaari,&nbsp;M. Chromy,&nbsp;A. Ernst,&nbsp;P. Paturi","doi":"10.1007/s10909-025-03288-1","DOIUrl":"10.1007/s10909-025-03288-1","url":null,"abstract":"<div><p>The influence of nonstoichiometry on the structural and magnetic properties of <span>(hbox {Sr}_2hbox {FeMoO}_6)</span> (SFMO) has been investigated by varying the ratio of Fe in polycrystalline samples. We demonstrate that changes in the Fe/Mo ratio can elevate the Curie temperature (<span>(T_textrm{C})</span>) in SFMO, even though the total magnetic moment is reduced at the same time. The discoveries of the stoichiometric imbalance between the cations Fe and Mo are discussed in the context of first-principles calculations on the electronic and magnetic structures of SFMO using the GGA+U method. Our theoretical results reveal that Fe deficiency reduces the <span>(T_textrm{C})</span> due to the antiparallel alignment of Fe moments in Mo positions, which is consistent with experimental observations. In contrast, accurate <span>(T_textrm{C})</span> trends for Fe excess are reproduced only by considering spin disorder, with both parallel and antiparallel Fe moment orientations. These insights provide a detailed understanding of the magnetic interactions in SFMO. Our findings lay the groundwork for developing innovative SFMO-based materials and emphasize the significance of stoichiometry control in optimizing SFMO properties.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"157 - 171"},"PeriodicalIF":1.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-025-03288-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888585","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}

{"title":"Investigation on the Mechanism of Maximum Efficiency Point for Helium-Based Oscillating Heat Pipe","authors":"Jun Zhang,&nbsp;Peng Wang,&nbsp;Changcheng Ma,&nbsp;Yi Huo,&nbsp;Xudi Wang,&nbsp;Rui Huang,&nbsp;Qing Cao","doi":"10.1007/s10909-025-03290-7","DOIUrl":"10.1007/s10909-025-03290-7","url":null,"abstract":"<div><p>Liquid helium cryogenic system is crucial for achieving low-temperature superconductivity in particle accelerator and controllable nuclear fusion devices. However, the heat conductivity of copper in the 4K region is 400–800 W m⁻¹ K⁻¹, which limits the performance of superconductivity system. The application of helium-based oscillating heat pipe (OHP) promotes this deficiency mitigation, with a maximum effective thermal conductivity (ETC) ranging from 4000 to 16,000 W m⁻¹ K⁻¹. Although numerous scholars have experimentally observed the maximum efficiency point of OHP, but its underlying mechanism remains unclear. In this study, a test rig for measuring the heat transfer performance and dynamic parameters of helium-based OHP in the 4K region was constructed. A numerical simulation method for the gas–liquid two-phase unsteady flow process in the OHP was established. The amplitude and period distribution of dynamic pressure fluctuations in OHP were analyzed. The correlation between its pressure fluctuations and heat transfer process was explored. Finally, the mechanism of the maximum efficiency point was revealed with the oscillating characteristics for helium-based OHP in the 4K region.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"172 - 195"},"PeriodicalIF":1.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888586","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}

{"title":"A SFQ-to-CMOS Interface Circuit Based on SiGe BiCMOS for Josephson-CMOS Hybrid System","authors":"Zhichao Chen,&nbsp;Xingyu Zhang,&nbsp;Lixing You,&nbsp;Lingyun Li","doi":"10.1007/s10909-025-03291-6","DOIUrl":"10.1007/s10909-025-03291-6","url":null,"abstract":"<div><p>In this article, a novel DC-biased interface for multi-channel superconducting computers was designed, fabricated, and tested. Conventional interfaces for Josephson-CMOS memory rely on Josephson latching drivers (JLDs) or SQUID (Superconducting Quantum Interference Device) stacks to convert weak signals. However, SQUID stacks achieve high frequencies (tens of GHz) but produce only a few millivolts of output and occupy large areas, while JLDs provide higher output voltages (tens of millivolts) but require AC bias. To address these limitations, an interface based on SiGe BiCMOS (Silicon-Germanium Bipolar CMOS) technology was proposed, integrating the functions of JLDs and CMOS amplifiers into a single chip. Fabricated using a 130 nm SiGe BiCMOS process, the interface converts 200 µV to 1.2 V with a power consumption of only 386 µW per channel at 4.2 K. Low-frequency measurements demonstrated 21-channel signal conversion without the need for clock synchronization or additional amplifiers, significantly simplifying the cryogenic system. The proposed interface features key advantages, including DC bias, high gain, and asynchronous operation, making it a practical solution for superconductor–semiconductor signal conversion. While its maximum speed is currently limited, this interface represents a promising step toward scalable, energy-efficient multi-channel superconducting computers.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"196 - 208"},"PeriodicalIF":1.1,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888504","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}

{"title":"Correction: Benefits of the Use of Monte Carlo Simulations in Cryogenic Detector Design","authors":"Simone Lotti,&nbsp;Matteo D’Andrea,&nbsp;Claudio Macculi,&nbsp;Luigi Piro,&nbsp;Caroline Kilbourne,&nbsp;Dan McCammon,&nbsp;Ralph Kraft","doi":"10.1007/s10909-025-03287-2","DOIUrl":"10.1007/s10909-025-03287-2","url":null,"abstract":"","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 1-2","pages":"19 - 20"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-025-03287-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143784274","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}

{"title":"Revisiting the properties of superfluid and normal liquid 4He using ab initio potentials","authors":"Tommaso Morresi,&nbsp;Giovanni Garberoglio","doi":"10.1007/s10909-025-03283-6","DOIUrl":"10.1007/s10909-025-03283-6","url":null,"abstract":"<div><p>We investigate the properties of liquid <span>(^4)</span>He in both the normal and superfluid phases using path-integral Monte Carlo simulations and recently developed <i>ab initio</i> potentials that incorporate pair, three-body, and four-body interactions. By focusing on the energy per particle as a representative observable, we use a perturbative approach to quantify the individual contributions of the many-body potentials and systematically propagate their associated uncertainties. Our findings indicate that the three-body and four-body potentials contribute to the total energy by approximately 4% and 0.5%, respectively. However, the primary limitation in achieving highly accurate first principles calculations arises from the uncertainty in the four-body potential, which currently dominates the propagated uncertainty. In addition to the energy per particle, we analyze other key observables, including the superfluid fraction, condensed fraction, and pair distribution function, all of which demonstrate excellent agreement with experimental measurements.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"103 - 122"},"PeriodicalIF":1.1,"publicationDate":"2025-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888632","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}

{"title":"Nambu-Goldstone Modes in Two Segregated Bose-Einstein Condensates Limited by a Hard Wall","authors":"Hoang Van Quyet","doi":"10.1007/s10909-025-03285-4","DOIUrl":"10.1007/s10909-025-03285-4","url":null,"abstract":"<div><p>In the framework of the Gross-Pitaevskii theory, based on the double-parabola approximation method, we successfully found the expressions for dispersion relations of three NG modes of two immiscible Bose-Einstein condensates restricted by a hard wall (two phonons and a ripplon). For the first condensate component, which is not confined by a hard wall, we found one phonon and one ripplon. Meanwhile, for the second component confined by a hard wall, we found only one phonon (the dispersion relation depends on the position of the hard wall), and this manifests explicitly the finite-size effect.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 3-4","pages":"145 - 156"},"PeriodicalIF":1.1,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888530","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}