Journal of Low Temperature Physics最新文献

{"title":"Improving Amplification Bandwidth by Combining Josephson Parametric Amplifiers for Active Axion Search Experiments at IBS/CAPP","authors":"Sergey V. Uchaikin,&nbsp;Jinmyeong Kim,&nbsp;Boris I. Ivanov,&nbsp;Arjan F. van Loo,&nbsp;Yasunobu Nakamura,&nbsp;Saebyeok Ahn,&nbsp;Seonjeong Oh,&nbsp;Seongtae Park,&nbsp;Andrei Matlashov,&nbsp;Woohyun Chung,&nbsp;Yannis K. Semertzidis","doi":"10.1007/s10909-024-03090-5","DOIUrl":"10.1007/s10909-024-03090-5","url":null,"abstract":"<div><p>The Center for Axion and Precision Physics Research at the Institute for Basic Science in Republic of Korea is home to multiple active axion search experiments using cavity haloscopes that operate within the frequency range of 1–6 GHz. The haloscopes convert axions to photons, resulting in an output power of about 10<span>({^{-24}})</span>–10<span>({^{-22}})</span> W. To detect such a small signal amidst noise, quantum-limited noise amplifiers and ultra-low-temperature environment (a few tenths of mK) are required for all critical readout components to minimize noise from all active and passive lossy components. Our primary objective is to achieve the highest possible scanning-frequency speed, which includes the time for maintenance and system calibration. This paper presents the development and operation of low-noise amplifiers for haloscope experiments targeting different frequency ranges and provides design, operational, and performance details of the amplifiers.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 Part 3","pages":"14 - 20"},"PeriodicalIF":1.1,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03090-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501209","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":"Charge Motion in Solid Helium","authors":"A. I. Golov,&nbsp;V. B. Efimov,&nbsp;A. A. Levchenko,&nbsp;L. P. Mezhov-Deglin","doi":"10.1007/s10909-024-03160-8","DOIUrl":"10.1007/s10909-024-03160-8","url":null,"abstract":"<div><p>We overview and discuss several advances in the understanding of the motion of ions through solid helium. Positive and negative ions in solid helium are microscopic complexes with internal structures embedded into the host crystal lattice. Their low-field mobilities normally decrease with cooling in both bcc and hcp crystals of either isotope of helium (<span>(^3)</span>He and <span>(^4)</span>He). Depending on the density of solid helium (as well as, in the case of positive ions in hcp <span>(^4)</span>He, on the crystal orientation), the corresponding activation energies for the mobility of the two species of ions may or may not coincide, and they are found to be typically either equal to or about twice the vacancy creation energy. In strong electric fields, the field dependence of the drift velocity of ions is often nonlinear but monotonic. However, for positive ions in hcp <span>(^4)</span>He, non-monotonic anomalies in both temperature and field dependences of the drift velocity were observed. We discuss these features within the framework of the theory of ion motion via inelastic scattering of low-energy vacancions put forward by Alexander Andreev and co-workers.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"217 1-2","pages":"313 - 330"},"PeriodicalIF":1.1,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03160-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501208","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":"P-wave Pairing Near a Spin-Split Josephson Junction","authors":"Rubén Seoane Souto,&nbsp;Dushko Kuzmanovski,&nbsp;Ignacio Sardinero,&nbsp;Pablo Burset,&nbsp;Alexander V. Balatsky","doi":"10.1007/s10909-024-03176-0","DOIUrl":"10.1007/s10909-024-03176-0","url":null,"abstract":"<div><p>Superconductivity and magnetism are competing effects that can coexist in certain regimes. Their co-existence leads to unexpected new behaviors that include the onset of exotic electron pair mechanisms and topological phases. In this work, we study the properties of a Josephson junction between two spin-split superconductors. The spin-splitting in the superconductors can arise from either the coupling to a ferromagnetic material or an external magnetic field. The properties of the junction are dominated by the Andreev bound states that are also split. One of these states can cross the superconductor’s Fermi level, leading to a ground-state transition characterized by a suppressed supercurrent. We interpret the supercurrent blockade as coming from a dominance of p-wave pairing close to the junction, where the electrons are at both sides. To support this interpretation, we analyze the different pairing channels and show that p-wave pairing is favored in the case where the magnetization of the two superconductors is parallel and suppressed in the anti-parallel case. We also analyze the noise spectrum that shows signatures of the ground-state transition in the form of an elevated zero-frequency noise.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"217 1-2","pages":"106 - 120"},"PeriodicalIF":1.1,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03176-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501211","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 Substrate Corrugation During Helium Adsorption on Graphene in the Grand Canonical Ensemble","authors":"Gage Erwin,&nbsp;Adrian Del Maestro","doi":"10.1007/s10909-024-03156-4","DOIUrl":"10.1007/s10909-024-03156-4","url":null,"abstract":"<div><p>Adsorption of <span>({}^4)</span>He on graphene substrates has been a topic of great interest due to the intriguing effects of graphene corrugation on the manifestation of commensurate solid and exotic phases in low-dimensional systems. In this study, we employ worm algorithm quantum Monte Carlo to study helium adsorbed on a graphene substrate to explore corrugation effects in the grand canonical ensemble. We utilized a Szalewicz potential for helium–helium interactions and a summation of isotropic interactions between helium and carbon atoms to construct a helium–graphene potential. We implement different levels of approximation to achieve a smooth potential, three partially corrugated potentials, and a fully ab initio potential to test the effects of corrugation on the first and second layers. We demonstrate that the omission of corrugation within the helium–graphene potential could lead to finite-size effects in both the first and second layers. Thus, a fully corrugated potential should be used when simulating helium in this low-dimensional regime.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"215 5-6","pages":"525 - 540"},"PeriodicalIF":1.1,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501210","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: Directional Filter Design and Simulation for Superconducting On-Chip Filter-Banks","authors":"Louis H. Marting,&nbsp;Kenichi Karatsu,&nbsp;Akira Endo,&nbsp;Jochem J. A. Baselmans,&nbsp;Alejandro Pascual Laguna","doi":"10.1007/s10909-024-03162-6","DOIUrl":"10.1007/s10909-024-03162-6","url":null,"abstract":"","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 Part 3","pages":"154 - 155"},"PeriodicalIF":1.1,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03162-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522794","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":"Bound States and Vibrational Thermodynamic Properties of Scarf Type Potential Model","authors":"C. A. Onate,&nbsp;B. B. Deji-Jinadu,&nbsp;J. A. Akinpelu,&nbsp;O. O. Ajani,&nbsp;A. A. Adeniji","doi":"10.1007/s10909-024-03177-z","DOIUrl":"10.1007/s10909-024-03177-z","url":null,"abstract":"<div><p>The solution for a scarf type potential is obtained via the supersymmetric approach. The energy equation for any l-state is obtained in a closed and compact form. Some thermodynamic properties like the vibrational enthalpy, Gibbs free energy, heat capacity at constant pressure and entropy are obtained via the vibrational partition function from the energy level. The effect of temperature, potential depth and the screening parameter on these thermodynamic properties are examined. It was shown in the numerical computations that the different parameters have different variations with the thermodynamic properties.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 5-6","pages":"733 - 745"},"PeriodicalIF":1.1,"publicationDate":"2024-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522839","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":"Dynamics of Vector Bright Solitons in Spin-Tensor-Momentum-Coupled Bose–Einstein Condensates with Tunable Raman Coupling","authors":"Ya-Jun Wang,&nbsp;Yan-Li Guo,&nbsp;Xue-Ying Yang,&nbsp;Xiao-Fei Zhang","doi":"10.1007/s10909-024-03163-5","DOIUrl":"10.1007/s10909-024-03163-5","url":null,"abstract":"<div><p>We consider the stabilities and dynamical properties of solitons in one-dimensional spin-tensor-momentum-coupled Bose–Einstein condensates with periodical tunable Raman coupling by numerical simulating and variational approximating the time-dependent Gross–Pitaevskii equations. Our results show for a trapless system, the dynamically stabilized bright solitons can be formed by modulating Raman coupling with the initial state of polar soliton, and its evolution and movement show consistence with analytical prediction. The effects of oscillating frequency of Raman coupling are also investigated. In addition, the evolution of amplitudes of such solitons exhibits nontrivial mode with combination of two oscillations, which is different with the case of fixed Raman coupling. The periodically-modulating Raman coupling provides a new mechanism to stabilize the solitons in spin-tensor-momentum-coupled Bose–Einstein condensates, which would be beneficial for the potential study of soliton dynamics in experiment.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 5-6","pages":"722 - 732"},"PeriodicalIF":1.1,"publicationDate":"2024-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141501212","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":"Diamond and SiC Detectors for Rare Event Searches","authors":"Aviv Simchony,&nbsp;Zoë J. Smith,&nbsp;Betty Young,&nbsp;Paul Brink,&nbsp;Blas Cabrera,&nbsp;Matthew Cherry,&nbsp;Elspeth Cudmore,&nbsp;Ziqing Hong,&nbsp;Harris Kagan,&nbsp;Christopher Kenny,&nbsp;James Ryan,&nbsp;Noah Kurinsky","doi":"10.1007/s10909-024-03148-4","DOIUrl":"10.1007/s10909-024-03148-4","url":null,"abstract":"<div><p>In recent years, there has been increasing interest in developing detectors which are sensitive to sub-GeV dark matter and low-energy events from coherent neutrino scattering. Due to carbon’s light atomic weight and its tendency to form crystals with high-energy, long-lived phonon modes, carbon-based crystals (including diamond and silicon carbide (SiC)) present themselves as natural target materials for scattering-based searches in this regime. We present our preliminary results in adapting our TES-based detectors to these substrates, specifically 4-H SiC and polycrystalline diamond. We focus on our fabrication efforts, specifically tuning the transition temperature (<span>(text {T}_{text {C}})</span>) of tungsten films sputtered on these materials, as well as our advancement toward fabricating and testing devices on these substrates.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 Part 3","pages":"363 - 370"},"PeriodicalIF":1.1,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522837","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":"Monitoring TES Loop Gain in Frequency Multiplexed Readout","authors":"T. de Haan,&nbsp;T. Adkins,&nbsp;M. Hazumi,&nbsp;D. Kaneko,&nbsp;J. Montgomery,&nbsp;G. Smecher,&nbsp;A. Suzuki,&nbsp;Y. Zhou","doi":"10.1007/s10909-024-03174-2","DOIUrl":"10.1007/s10909-024-03174-2","url":null,"abstract":"<div><p>We present a method for precise monitoring of the loop gain of transition edge sensors (TES) under electrothermal feedback. The measurement is implemented on the ICE DfMux electronics and operates simultaneously with Digital Active Nulling (DAN). It uses one additional bias sinusoid per TES and does not require any additional readout channels. The loop gain monitor is being implemented on the Simons Array and is an integral part of the baseline calibration strategy for the upcoming <i>LiteBIRD</i> satellite.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 Part 3","pages":"427 - 435"},"PeriodicalIF":1.1,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141528884","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":"Microcalorimeter Absorber Optimization for ATHENA and LEM","authors":"Edward Wassell,&nbsp;Joseph Adams,&nbsp;Simon Bandler,&nbsp;James Chervenak,&nbsp;Renata Cumbee,&nbsp;Fred Finkbeiner,&nbsp;Joshua Fuhrman,&nbsp;Samuel Hull,&nbsp;Richard Kelley,&nbsp;Caroline Kilbourne,&nbsp;Jennette Mateo,&nbsp;Haruka Muramatsu,&nbsp;Frederick Porter,&nbsp;Asha Rani,&nbsp;Kazuhiro Sakai,&nbsp;Stephen Smith,&nbsp;Nicholas Wakeham,&nbsp;Sang Yoon","doi":"10.1007/s10909-024-03173-3","DOIUrl":"10.1007/s10909-024-03173-3","url":null,"abstract":"<div><p>High quantum efficiency (QE) X-ray absorbers are needed for future X-ray astrophysics telescopes. The Advanced Telescope for High ENergy Astrophysics (ATHENA) mission requirements for the X-ray Integral Field Unit (X-IFU) instrument dictate, at their most stringent, that the absorber achieve vertical QE &gt; 90.6% at 7 keV and low total heat capacity, 0.731 pJ/K. The absorber we have designed is 313 µm square composed of 1.05 μm Au and 5.51 μm electroplated Bi films (Barret et al. in Exp Astron 55:373–426, 2023). Overhanging the TES, the absorber is mechanically supported by 6 small legs whose 5 μm diameter is tuned to the target thermal conductance for the device. Further requirements for the absorber for X-IFU include a &gt; 40% reflectance at wavelengths from 1 to 20 μm to reduce shot noise from infrared radiation from higher temperature stages in the cryostat. We meet this requirement by capping our absorbers with an evaporated Ti/Au thin film. Additionally, narrow gaps between absorbers are required for high fill fraction, as well as low levels of fine particulate remaining on the substrate and zero shorts between absorbers that may cause thermal crosstalk. The Light Element Mapper (LEM) is an X-ray probe concept optimized to explore the soft X-ray emission from 0.2 to 2.0 keV. These pixels for LEM require high residual resistance ratio (RRR) thin 0.5 µm Au absorbers to thermalize uniformly and narrow &lt; 2 μm gaps between pixels for high areal fill fraction. This paper reports upon technology developments required to successfully yield arrays of pixels for both mission concepts and presents first testing results of devices with these new absorber recipes.</p></div>","PeriodicalId":641,"journal":{"name":"Journal of Low Temperature Physics","volume":"216 Part 3","pages":"417 - 426"},"PeriodicalIF":1.1,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10909-024-03173-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141522838","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}