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Design of deeply cooled ultra-low dissipation amplifier and measuring cell for quantum measurements with a microwave single-photon counter 设计用于微波单光子计数器量子测量的深冷超低耗散放大器和测量单元
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023896
O. G. Turutanov, A. M. Korolev, V. I. Shnyrkov, A. P. Shapovalov, M. Baránek, S. Kern, V. Yu. Lyakhno, P. Neilinger, M. Grajcar
{"title":"Design of deeply cooled ultra-low dissipation amplifier and measuring cell for quantum measurements with a microwave single-photon counter","authors":"O. G. Turutanov, A. M. Korolev, V. I. Shnyrkov, A. P. Shapovalov, M. Baránek, S. Kern, V. Yu. Lyakhno, P. Neilinger, M. Grajcar","doi":"10.1063/10.0023896","DOIUrl":"https://doi.org/10.1063/10.0023896","url":null,"abstract":"The requirements and details of designing a measuring cell and low-back-action deeply-cooled amplifier for quantum measurements at 10 mK are discussed. This equipment is a part of a microwave single-photon counter based on a superconducting flux qubit. The high-electron mobility transistors (HEMTs) in the amplifier operate in unsaturated microcurrent regime and dissipate only 1 μW of dc power per transistor. Simulated amplifier gain is 15 dB at 450 MHz with a high-impedance (≈ 5 kΩ) signal source and standard 50-Ω output.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Comparative study on the effect of substrates on electrical properties of tin and chromium thin films 基底对锡和铬薄膜电气性能影响的比较研究
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023890
S. Udachan, S. B. Kolavekar, N. H. Ayachit, L. A. Udachan, S. Siddanna, S. S. Kolkundi, K. Naveen Kumar
{"title":"Comparative study on the effect of substrates on electrical properties of tin and chromium thin films","authors":"S. Udachan, S. B. Kolavekar, N. H. Ayachit, L. A. Udachan, S. Siddanna, S. S. Kolkundi, K. Naveen Kumar","doi":"10.1063/10.0023890","DOIUrl":"https://doi.org/10.1063/10.0023890","url":null,"abstract":"In thin film technology, substrate materials happen to be one of the deposition parameters that determine the physical properties of films. Hence, soda-lime glass and quartz continue to be the widely utilized substrate materials because of their high-frequency performance, price, and surface quality. For certain applications, various substrate materials that provide an acceptable compromise for the work at hand are required. Soda-lime glass and quartz have been chosen as the substrates for the tin and chromium thin films that will be produced via thermal evaporation in a vacuum. A comparative study on the electrical properties of chromium films was made in the light of Fuchs–Sondheimer and Mayadas–Shatzkes theories. Numerous physical properties, including resistivity of infinitely thick film, sticking coefficient, conduction electron mean free, etc., may be determined from resistivity-thickness data.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Low-temperature anomalies of the dielectric permeability of Sn2P2S6 crystals Sn2P2S6 晶体介电渗透率的低温反常现象
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023893
H. Ban, D. Gal, A. Kohutych, A. Molnar
{"title":"Low-temperature anomalies of the dielectric permeability of Sn2P2S6 crystals","authors":"H. Ban, D. Gal, A. Kohutych, A. Molnar","doi":"10.1063/10.0023893","DOIUrl":"https://doi.org/10.1063/10.0023893","url":null,"abstract":"Low-temperature anomalies of dielectric permittivity of Sn2P2S6 crystals were investigated. It is shown that these phenomena have a relaxation character and the observed anomalies could be related to the small hole polarons dynamics with donor-acceptor compensation processes in lattice with tin and sulfur vacancies. To confirm it, we measured the dielectric properties of tin-enriched and sulfur-enriched crystals. It is shown that deviation from stoichiometry leads to a significant change in the low-temperature anomalies of dielectric losses.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Thermomagnetoelectric convective effect in normal and superfluid systems 正常和超流体系统中的热磁电对流效应
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023883
O. M. Konstantynov
{"title":"Thermomagnetoelectric convective effect in normal and superfluid systems","authors":"O. M. Konstantynov","doi":"10.1063/10.0023883","DOIUrl":"https://doi.org/10.1063/10.0023883","url":null,"abstract":"Thermomagnetoelectric effect for the dielectric hydrodynamic system is considered. It is established that in a liquid, which is placed in a magnetic field, the temperature gradient can cause a convective mass flow, which leads to the appearance of an electric field in the surrounding space. The distribution of electric potential for various geometric implementations is calculated. A comparison of the obtained effect for normal and superfluid 4He is performed.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Cryovacuum facilities for studying astrophysical ices 用于研究天体物理冰的低温真空设施
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023894
O. Golikov, D. Yerezhep, A. Akylbayeva, D. Sokolov, E. Korshikov, A. Aldiyarov
{"title":"Cryovacuum facilities for studying astrophysical ices","authors":"O. Golikov, D. Yerezhep, A. Akylbayeva, D. Sokolov, E. Korshikov, A. Aldiyarov","doi":"10.1063/10.0023894","DOIUrl":"https://doi.org/10.1063/10.0023894","url":null,"abstract":"This work introduces a cryovacuum apparatus used to investigate substances under near-space conditions. This device allows one to study the refractive index, infrared spectra, and density of substances that are condensed from the vapor phase onto a cooled substrate at temperatures ranging from 11 K to 300 K. Concurrently, the ultimate pressure of 0.1 nTorr can be obtained in the vacuum chamber. The introduced setup utilizes FTIR spectroscopy with a spectral measurement range of 400–7800 cm−1 and laser interference needed to determine the important physical and optical parameters. Several experiments allow us to stress that the data acquired using this apparatus are quite similar to those obtained by other researchers. Because of the non-directional deposition of substances from the vapor phase, the ice formed closely resembles the ice formed in space. This makes the introduced setup particularly useful. It is possible to use the presented cryovacuum apparatus to interpret data acquired in the course of astrophysical observations, allowing a researcher to determine the properties of space objects.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 influence of the condensation rate on the structure of Cu-Mo pseudoalloys 冷凝速率对铜-钼假合金结构的影响
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023891
V. Riaboshtan, A. Zubkov, M. Zhadko, E. Zozulya, E. Zubarev
{"title":"The influence of the condensation rate on the structure of Cu-Mo pseudoalloys","authors":"V. Riaboshtan, A. Zubkov, M. Zhadko, E. Zozulya, E. Zubarev","doi":"10.1063/10.0023891","DOIUrl":"https://doi.org/10.1063/10.0023891","url":null,"abstract":"The structure and microhardness of Cu-0.3 at. % Mo vacuum condensates obtained at different deposition rates, both in the initial state and after isothermal annealings carried out up to 800 °C, were studied in the work. It has been established that molybdenum has a dispersing effect on the grain structure of the copper matrix, which consists of the blocking effect of monoatomic molybdenum adsorption layers formed on the surface of growing copper grains during the condensation of a two-component vapor. The structure of Cu-0.3 at. % Mo condensates demonstrates increased thermal stability, retaining the size of the original grain upon annealing up to 800 °C. The thermal stabilization of the grain structure of condensates is explained by the influence of grain-boundary segregations of molybdenum atoms and particles, which reduce the free energy of grain boundaries and the rate of their migration.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Growth and crystal structure of CdTe1−xSex (x ≥ 0.75) thin films prepared by the method of high-frequency magnetron sputtering 高频磁控溅射法制备的 CdTe1-xSex (x ≥ 0.75) 薄膜的生长和晶体结构
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023888
A. I. Kashuba, B. Andriyevsky
{"title":"Growth and crystal structure of CdTe1−xSex (x ≥ 0.75) thin films prepared by the method of high-frequency magnetron sputtering","authors":"A. I. Kashuba, B. Andriyevsky","doi":"10.1063/10.0023888","DOIUrl":"https://doi.org/10.1063/10.0023888","url":null,"abstract":"CdTe1–xSex (x = 0.75 and 0.95) thin films were deposited on quartz substrate by the method of high-frequency magnetron sputtering. The chemical composition analysis and crystal structure refinement was examined with using X-ray fluorescence spectroscopy and X-ray diffraction data. CdTe1–xSex thin films crystallizes in hexagonal structure [structure type—ZnO, space group P63mc (No. 186)]. Unit cell parameters decrease with increasing Se content in CdTe1–xSex thin films. The value of the optical band gap for CdTe0.25Se0.75 and CdTe0.05Se0.95 was estimating using the Tauc plot and from the maximum position of the first derivative of the transmittance dT/dλ.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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 effect of O2 pressure on phase formation and superconductivity properties of Tl-based HTS 氧气压力对钛基 HTS 的相形成和超导特性的影响
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023889
D. L. Surmanidze, T. E. Lobzhanidze, I. R. Metskhvarishvili, G. N. Dgebuadze, V. M. Gabunia, B. G. Bendeliani, M. R. Metskhvarishvili, D. A. Jishiashvili
{"title":"The effect of O2 pressure on phase formation and superconductivity properties of Tl-based HTS","authors":"D. L. Surmanidze, T. E. Lobzhanidze, I. R. Metskhvarishvili, G. N. Dgebuadze, V. M. Gabunia, B. G. Bendeliani, M. R. Metskhvarishvili, D. A. Jishiashvili","doi":"10.1063/10.0023889","DOIUrl":"https://doi.org/10.1063/10.0023889","url":null,"abstract":"Thallium-based high-temperature superconductors exhibit excellent superconductivity performance (Tc, Jc). Formation of the Tl-based superconducting materials critically depends on the used precursor and synthesis conditions. In the present investigation, we used the in situ polymerization method for synthesizing high-purity and reaction-ability precursors. We find the critical dependence of Tl-based superconductor phase formation on the quantity of applied oxygen pressure. The experimental results showed that the Tl-1223 phase formed at an oxygen gas pressure at 1 to 2 atm, Tl-2223 phase at 3 atm, and Tl-2212 phase at 4 to 8 atm.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Numerical modeling of metal-dielectric metasurface as an element of microwave sensors for biomedical applications 作为生物医学应用微波传感器元件的金属介电元表面的数值建模
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023885
K. S. Kuznetsova, V. A. Pashynska, Z. E. Eremenko
{"title":"Numerical modeling of metal-dielectric metasurface as an element of microwave sensors for biomedical applications","authors":"K. S. Kuznetsova, V. A. Pashynska, Z. E. Eremenko","doi":"10.1063/10.0023885","DOIUrl":"https://doi.org/10.1063/10.0023885","url":null,"abstract":"This paper reports the results of numerical modeling of wave reflection coefficient behavior of the metal-dielectric metasurface at microwaves that can be used for biomedical applications. The study includes optimization of the working parameters of the metasurface-based structure as a sensitive element of a microwave sensoring systems for determination of proteins concentration in different solutions. In the current research a unit with the geometry, which is similar to the geometry of one well of the standard 96-multiwell laboratory microplate, is used as a resonant metasurface unit cell and liquid-holding structure. Human serum albumin (HSA) is used as a protein specimen in our model study. The present numerical modeling is based on the results of our previous experimental measurements of complex permittivity values of HSA water solutions and its biochemical reaction mixtures using microwave dielectrometry method and the developed setup. The unit cell approach calculations are performed by COMSOL Multiphysics software. The optimization of working parameters of the metal-dielectric metasurface structure with tested solutions allow us to observe the resonance effects of the wave reflection coefficient in the microwave range. We can determine the HSA concentration changes in water solutions and enzymatic reaction mixtures by the resonance frequency shift of the wave reflection coefficient of the metal-dielectric metasurface. Developed metal-dielectric metasurface-based structure demonstrates prospects to be used as a sensitive element of microwave sensors for proteins concentration determination with biomedical purposes.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Involvement of cationic sublattices in multiple polarization states in CuInP2S6 ferrielectrics 阳离子亚晶格参与 CuInP2S6 铁电体的多重极化态
IF 0.8 4区 物理与天体物理
Low Temperature Physics Pub Date : 2024-01-11 DOI: 10.1063/10.0023895
R. Yevych, V. Liubachko, Yu. Vysochanskii
{"title":"Involvement of cationic sublattices in multiple polarization states in CuInP2S6 ferrielectrics","authors":"R. Yevych, V. Liubachko, Yu. Vysochanskii","doi":"10.1063/10.0023895","DOIUrl":"https://doi.org/10.1063/10.0023895","url":null,"abstract":"The contribution of copper and indium cationic sublattices on polarization hysteresis loops in CuInP2S6 van der Waals ferrielectrics has been studied within the quantum anharmonic oscillator model that considers the ordering dynamics of Cu+ cations in the double-well local potential and displacive dynamics of In3+ cations in the three-well shaped potential. The multiple polarization states are manifested as single, double, and triple P(E) hysteresis loops. The triple loops originate from a field-induced ferrielectric to ferroelectric phase transition within a certain range of the phase diagram with continuous increase in the spontaneous polarization below the second-order transition from the paraelectric phase to the ferrielectric state.","PeriodicalId":18077,"journal":{"name":"Low Temperature Physics","volume":null,"pages":null},"PeriodicalIF":0.8,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139459356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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