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Study on Structural and Thermodynamic Properties of Solid Nitrogen with HCP Structure by Statistical Moment Method 用统计矩法研究具有HCP结构的固体氮的结构和热力学性质
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-30 DOI: 10.1007/s10909-025-03302-6
Hoc Quang Nguyen, Linh Mai Thi Le, Yen Hai Le, Huyen Ngoc Thi Ha, Hoa Ngoc Pham, Dat Xuan Hua, Cuong Chinh Nguyen
{"title":"Study on Structural and Thermodynamic Properties of Solid Nitrogen with HCP Structure by Statistical Moment Method","authors":"Hoc Quang Nguyen,&nbsp;Linh Mai Thi Le,&nbsp;Yen Hai Le,&nbsp;Huyen Ngoc Thi Ha,&nbsp;Hoa Ngoc Pham,&nbsp;Dat Xuan Hua,&nbsp;Cuong Chinh Nguyen","doi":"10.1007/s10909-025-03302-6","DOIUrl":"10.1007/s10909-025-03302-6","url":null,"abstract":"<div><p>The paper presents the analytic expressions of nearest neighbor distance between two particle, Helmholtz free energy, thermodynamic and structural quantities for hcp crystals on the basis of the statistical moment method (SMM) taking into account of vibrational motion of particles, Helmholtz free energy and thermodynamic quantities for hcp crystals on the basis of the self-consistent field method (SCFM) taking into account of molecular motion. The theoretical results are applied to calculate numerically for hcp-N<sub>2</sub>. Some numerical results are compared with experiments and other calculations.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 3-6","pages":"225 - 235"},"PeriodicalIF":1.4,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145170945","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
Thermodynamic Properties of Gapped Graphene Quantum Dots in Aharonov–Bohm Field Aharonov-Bohm场中石墨烯量子点的热力学性质
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-27 DOI: 10.1007/s10909-025-03303-5
Guichao Liu, Jie Zhang
{"title":"Thermodynamic Properties of Gapped Graphene Quantum Dots in Aharonov–Bohm Field","authors":"Guichao Liu,&nbsp;Jie Zhang","doi":"10.1007/s10909-025-03303-5","DOIUrl":"10.1007/s10909-025-03303-5","url":null,"abstract":"<div><p>This investigation explores the influence of temperature, radius, Aharonov–Bohm flux, and bandgap energy on the specific heat and magnetocaloric properties of graphene quantum dots. By enforcing the continuity condition of eigenspinors at the graphene quantum dots boundary, an analytical relation is derived, demonstrating the dependence of quantized energy levels on external physical parameters. The specific heat exhibits a Schottky-like anomaly, characterized by an initial rise with increasing temperature, reaching a maximum, followed by a subsequent decline. Enhanced magnetic fields induce a shift in the peak temperature while maintaining a consistent peak magnitude (~ 0.44 J/K). The magnetocaloric potential exhibits a monotonic increase with magnetic field intensity, converging to a saturation value of − 0.7 J/(kg⋅K) at elevated temperatures, where thermal fluctuations dominate. Furthermore, the magnetocaloric response demonstrates greater sensitivity to variations in bandgap energy and magnetic field strength compared to changes in the dot radius and Aharonov–Bohm flux.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 3-6","pages":"236 - 253"},"PeriodicalIF":1.4,"publicationDate":"2025-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169488","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
Luminescence of Nitrogen–Neon Nanoclusters 氮-氖纳米团簇的发光特性
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-23 DOI: 10.1007/s10909-025-03304-4
Oleksandr Korostyshevskyi, Cameron Wetzel, Ivan V. Borzenets, David M. Lee, Vladimir V. Khmelenko
{"title":"Luminescence of Nitrogen–Neon Nanoclusters","authors":"Oleksandr Korostyshevskyi,&nbsp;Cameron Wetzel,&nbsp;Ivan V. Borzenets,&nbsp;David M. Lee,&nbsp;Vladimir V. Khmelenko","doi":"10.1007/s10909-025-03304-4","DOIUrl":"10.1007/s10909-025-03304-4","url":null,"abstract":"<div><p>The decay dynamics of the <span>(alpha)</span>-group (<span>(^2)</span>D <span>(rightarrow ^4)</span>S transition) of N atoms stabilized in the collection of <span>(hbox {N}_2)</span>–Ne nanoclusters were studied at a temperature of 1.3 K. The variation of the <span>(hbox {N}_2)</span>/Ne ratio in nanoclusters results in substantial changes in the luminescence spectra of the <span>(alpha)</span>-group and in the characteristic decay times for the components of these spectra. In all obtained <span>(alpha)</span>-group spectra, the narrow component at <span>(lambda)</span> = 519.9 nm was observed. The spectroscopic results provide information about the structure of the nitrogen–neon nanoclusters. At elevated temperatures (<span>(approx)</span> 15–36 K), enhanced oxygen <span>(beta)</span>-group luminescence is observed in <span>(hbox {N}_2)</span>–Ne nanoclusters, with a smaller intensity enhancement than those observed within pure <span>(hbox {N}_2)</span> and mixed <span>(hbox {N}_2)</span>–Kr nanoclusters. These results confirm the energy transfer mechanism, in which excited nitrogen molecules formed on the nanocluster surface transfer energy to the stabilized oxygen atoms through the chain of <span>(hbox {N}_2)</span> molecules in a solid matrix.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 1-2","pages":"158 - 168"},"PeriodicalIF":1.4,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-025-03304-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145169099","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
Non-Monotonic Thermal Relaxation in the Nanopore Heat Exchanger for Dilution Refrigerator 稀释冰箱用纳米孔热交换器的非单调热松弛
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-22 DOI: 10.1007/s10909-025-03297-0
Azimjon A. Temurjonov, Taku Matsushita, Mitsunori Hieda, Nobuo Wada
{"title":"Non-Monotonic Thermal Relaxation in the Nanopore Heat Exchanger for Dilution Refrigerator","authors":"Azimjon A. Temurjonov,&nbsp;Taku Matsushita,&nbsp;Mitsunori Hieda,&nbsp;Nobuo Wada","doi":"10.1007/s10909-025-03297-0","DOIUrl":"10.1007/s10909-025-03297-0","url":null,"abstract":"<div><p>Thermal resistance and the thermal relaxation time are important physical properties in order to cool down samples at low temperatures. In the case of a dilution refrigerator, the relation between the thermal relaxation time of working fluid in a heat exchanger and the circulation rate should be taken care of. Recently, we reported on the nanopore heat exchanger with dramatically reduced thermal resistance. Experimental results suggested that the thermal relaxation time in the sinter pad is very short (less than 1 s), while the exact value was not determined. In order to verify its relation to the circulation rate, we performed numerical simulations of the thermal relaxation time. The expected monotonic increase with decrease of temperature has been confirmed down to 50 mK. However, at lower temperatures unexpected decrease is found. This unusual behavior is considered due to relatively small thermal resistance of liquid helium compared with the thermal boundary resistance.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 1-2","pages":"149 - 157"},"PeriodicalIF":1.4,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168554","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
The 2024 International Symposium on Quantum Fluids and Solids (QFS2024) 2024年量子流体与固体国际学术研讨会（QFS2024）
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-19 DOI: 10.1007/s10909-025-03308-0
Wei Guo, Yoonseok Lee
{"title":"The 2024 International Symposium on Quantum Fluids and Solids (QFS2024)","authors":"Wei Guo,&nbsp;Yoonseok Lee","doi":"10.1007/s10909-025-03308-0","DOIUrl":"10.1007/s10909-025-03308-0","url":null,"abstract":"","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 1-2","pages":"1 - 2"},"PeriodicalIF":1.4,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167150","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
Preface of "Quantum Technologies with Floating Charged Particles" 《带有浮动带电粒子的量子技术》前言
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-13 DOI: 10.1007/s10909-025-03300-8
Denis Konstantinov
{"title":"Preface of \"Quantum Technologies with Floating Charged Particles\"","authors":"Denis Konstantinov","doi":"10.1007/s10909-025-03300-8","DOIUrl":"10.1007/s10909-025-03300-8","url":null,"abstract":"","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 5-6","pages":"227 - 229"},"PeriodicalIF":1.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145165288","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
Temperature-Sensitive Porous Thin-Films for Superconducting Transition-Edge Sensors 用于超导过渡边缘传感器的温度敏感多孔薄膜
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-05-12 DOI: 10.1007/s10909-025-03296-1
Tao Wang, SongNing Wang, YaQiang Chai, L. F. Wei
{"title":"Temperature-Sensitive Porous Thin-Films for Superconducting Transition-Edge Sensors","authors":"Tao Wang,&nbsp;SongNing Wang,&nbsp;YaQiang Chai,&nbsp;L. F. Wei","doi":"10.1007/s10909-025-03296-1","DOIUrl":"10.1007/s10909-025-03296-1","url":null,"abstract":"<div><p>Superconducting transition-edge sensor (TES) is one of the sensitive single-photon detectors and possesses the photon-number resolving ability. Almost all of the existing sensitive radiation thermal absorption thin films for the generation of TESs are usually generated by optimizing the material components of the films. Alternatively, in this paper we experimentally demonstrated a flexible and controllable approach to generate the temperature-sensitive superconducting one-component thin film, by using the laser drilling technique. Specifically, we designed the sample by numerical simulation method, fabricated the aluminum (Al) thin film with the optimized pore parameters, and experimentally measured the temperature-dependent resistances in ultra-low thermal noise environments. The measured results indicate that, the resistances of the fabricated porous Al films are highly temperature-sensitive around their superconducting transition-edge regimes, and thus they can be utilized to make the desired TES devices. Although the work temperature of the prepared <span>(mu)</span>-Mux readout circuit does not match the generated TES configuration at present, we argue that the one-component porous films, demonstrated here, may provide an effective approach to make the desired TES device for the experimental implementation of infrared single-photon detection.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 1-2","pages":"136 - 148"},"PeriodicalIF":1.4,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145164948","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
Comment on: “Eigensolution and Thermodynamic Properties of Standard Coulombic Potential” 评《标准库仑势的本征解及热力学性质》
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-04-30 DOI: 10.1007/s10909-025-03270-x
Francisco M. Fernández
{"title":"Comment on: “Eigensolution and Thermodynamic Properties of Standard Coulombic Potential”","authors":"Francisco M. Fernández","doi":"10.1007/s10909-025-03270-x","DOIUrl":"10.1007/s10909-025-03270-x","url":null,"abstract":"<div><p>We show that the eigenvalues of the Schrödinger equation with a Coulomb potential obtained in a paper published recently in this journal do not agree with the well-known ones appearing in the literature. We also show that the authors failed to calculate the canonical partition function for that system correctly and derived meaningless thermodynamic functions that depend on the orbital quantum number.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 3-6","pages":"169 - 172"},"PeriodicalIF":1.4,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145171587","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
Experimental Realization of One-Dimensional Helium 一维氦的实验实现
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-04-25 DOI: 10.1007/s10909-025-03295-2
Paul E. Sokol, Adrian Del Maestro, Sutirtha Paul, Nathan Nichols, Timothy Prisk, Garfield Warren
{"title":"Experimental Realization of One-Dimensional Helium","authors":"Paul E. Sokol,&nbsp;Adrian Del Maestro,&nbsp;Sutirtha Paul,&nbsp;Nathan Nichols,&nbsp;Timothy Prisk,&nbsp;Garfield Warren","doi":"10.1007/s10909-025-03295-2","DOIUrl":"10.1007/s10909-025-03295-2","url":null,"abstract":"<div><p>As the spatial dimension is lowered, locally stabilizing interactions are reduced, leading to the emergence of strongly fluctuating phases of matter without classical analogues. Realizing 1D platforms has been elusive, due to their inherent lack of stability, with a few notable exceptions such as spin chains and ultracold low-density gasses. The inability of such systems to exhibit long range order is essential to their universal description in terms of the Tomonaga-Luttinger liquid theory. Here we report on the experimental observation of a one-dimensional quantum liquid of <span>(^4)</span>He using nanoengineering to confine it within a porous material preplated with a noble gas to enhance dimensional reduction. The resulting excitations of the confined <span>(^4)</span>He, confirmed by neutron scattering, are qualitatively different than three- and two-dimensional superfluid helium, and consistent with Quantum Monte Carlo calculations. The results can be analyzed in terms of a mobile impurity in an otherwise linear Luttinger liquid allowing for the extraction of the microscopic parameters describing the emergent quantum liquid.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"220 1-2","pages":"124 - 135"},"PeriodicalIF":1.4,"publicationDate":"2025-04-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-025-03295-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145168749","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
Characterization of Tunnel Diode Oscillator for Qubit Readout Applications 用于量子位读出应用的隧道二极管振荡器的特性
IF 1.4 3区 物理与天体物理
Journal of Low Temperature Physics Pub Date : 2025-04-21 DOI: 10.1007/s10909-025-03293-4
Ivan Grytsenko, Sander van Haagen, Oleksiy Rybalko, Asher Jennings, Rajesh Mohan, Yiran Tian, Erika Kawakami
{"title":"Characterization of Tunnel Diode Oscillator for Qubit Readout Applications","authors":"Ivan Grytsenko,&nbsp;Sander van Haagen,&nbsp;Oleksiy Rybalko,&nbsp;Asher Jennings,&nbsp;Rajesh Mohan,&nbsp;Yiran Tian,&nbsp;Erika Kawakami","doi":"10.1007/s10909-025-03293-4","DOIUrl":"10.1007/s10909-025-03293-4","url":null,"abstract":"<div><p>We developed a tunnel diode oscillator and characterized its performance, demonstrating its potential applications in the quantum state readout of electrons in semiconductors and electrons on liquid helium. This cryogenic microwave source demonstrates significant scalability potential for large-scale qubit readout systems due to its compact design and low-power consumption of only 1 µW, making it suitable for integration on the 10 mK stage of a dilution refrigerator. The tunnel diode oscillator exhibits superior amplitude stability compared to commercial microwave sources. The output frequency is centered around 140 MHz, commonly used for qubit readout of electrons in semiconductors, with a frequency tunability of 10 MHz achieved using a varactor diode. Furthermore, the phase noise was significantly improved by replacing the commercially available voltage source with a lead-acid battery, achieving a measured phase noise of <span>(-)</span>115 dBc/Hz at a 1 MHz offset.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"219 5-6","pages":"282 - 300"},"PeriodicalIF":1.4,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145167553","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
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