发布求助
文献互助 智能选刊 最新文献

Journal of the Physical Society of Japan最新文献

筛选
英文 中文
Generating Gradients in the Energy Landscape Using Rectified Linear Type Cost Functions for Efficiently Solving 0/1 Matrix Factorization in Simulated Annealing 利用整流线性型成本函数在能量景观中生成梯度，以高效解决模拟退火中的 0/1 矩阵因式分解问题
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-21 DOI: 10.7566/jpsj.93.044002
Makiko Konoshima, Hirotaka Tamura, Yoshiyuki Kabashima
{"title":"Generating Gradients in the Energy Landscape Using Rectified Linear Type Cost Functions for Efficiently Solving 0/1 Matrix Factorization in Simulated Annealing","authors":"Makiko Konoshima, Hirotaka Tamura, Yoshiyuki Kabashima","doi":"10.7566/jpsj.93.044002","DOIUrl":"https://doi.org/10.7566/jpsj.93.044002","url":null,"abstract":"The 0/1 matrix factorization defines matrix products using logical AND and OR as product-sum operators, revealing the factors influencing various decision processes. Instances and their characteristics are arranged in rows and columns. Formulating matrix factorization as an energy minimization problem and exploring it with Simulated Annealing (SA) theoretically enables finding a minimum solution in sufficient time. However, searching for the optimal solution in practical time becomes problematic when the energy landscape has many plateaus with flat slopes. In this work, we propose a method to facilitate the solution process by applying a gradient to the energy landscape, using a rectified linear type cost function readily available in modern annealing machines. We also propose a method to quickly obtain a solution by updating the cost function’s gradient during the search process. Numerical experiments were conducted, confirming the method’s effectiveness with both noise-free artificial and real data.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"83 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140201166","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
Observation of Primary Rogue Waves in Solids 固体中的原生激波观测
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-19 DOI: 10.7566/jpsj.93.044001
Wei-Gang Zhao, Da-Wei Zuo, Xiu-Shu Tian, Xi-Yang Xie, Gao-Qing Meng
{"title":"Observation of Primary Rogue Waves in Solids","authors":"Wei-Gang Zhao, Da-Wei Zuo, Xiu-Shu Tian, Xi-Yang Xie, Gao-Qing Meng","doi":"10.7566/jpsj.93.044001","DOIUrl":"https://doi.org/10.7566/jpsj.93.044001","url":null,"abstract":"In this study, we first observed second-order primary rogue waves in solids by experiments using a modal based on primary waves. We found that the propagation of primary waves in solids can be described by the nonlinear Schrödinger equation. To enhance our understanding, we employed variational mode decomposition and identified the inherent frequency as the main factor. Therefore, we conducted spectral analysis to determine the frequency and discussed the results. The theoretical and experimental results are found to be in agreement, and our findings can be applied to the non destructive testing of large engineering structures.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"153 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140169898","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
Molten Salt Flux Liquid Transport Method for Ultra Clean Single Crystals UTe2 超洁净单晶 UTe2 的熔盐通量液态传输方法
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-14 DOI: 10.7566/jpsj.93.043703
Dai Aoki
{"title":"Molten Salt Flux Liquid Transport Method for Ultra Clean Single Crystals UTe2","authors":"Dai Aoki","doi":"10.7566/jpsj.93.043703","DOIUrl":"https://doi.org/10.7566/jpsj.93.043703","url":null,"abstract":"Various single-crystal growth techniques have been presented for the unconventional superconductor UTe<sub>2</sub>. The molten salt flux liquid transport (MSFLT) method is employed to grow high-quality and large single crystals, exhibiting a high residual resistivity ratio (RRR ∼ 200–800). However, the Te self-flux and chemical vapor transport (CVT) methods produce samples of lower quality. The MSFLT method is a hybrid approach combining the molten salt flux (MSF) and CVT methods. One significant advantage is that the materials gradually crystallize at a relatively low temperature, which is maintained throughout the main process. This may be crucial for preventing U deficiency and obtaining high-quality large single crystals of UTe<sub>2</sub>. Many different single crystals obtained using different techniques have been characterized by resistivity and specific heat measurements. The superconducting transition temperature <i>T</i><sub>c</sub> decreases with residual resistivity <i>ρ</i><sub>0</sub>, followed by the Abrikosov–Gor’kov pair-breaking theory, and reaches 2.1 K for <i>ρ</i><sub>0</sub> → 0. The residual <i>γ</i>-value of the specific heat for the highest quality sample was only 3% of the normal-state <i>γ</i>-value. The specific heat jump, Δ<i>C</i><sub>e</sub>/(<i>γT</i><sub>c</sub>) reached approximately 2.7 for high-quality samples, indicating a strong-coupling superconductor. Furthermore, the magnetic susceptibility for <i>H</i> || <i>a</i>-axis in a high-quality single crystal does not show an up-turn behavior on cooling, which is consistent with the results of NMR Knight shift and <i>μ</i>SR experiments.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"8 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140124270","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
Revisiting the Magnetic Orders in Heisenberg Model for Tsai-Type Quasicrystal Approximant 重新审视蔡型准晶近似的海森堡模型中的磁序
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-08 DOI: 10.7566/jpsj.93.045001
Takanori Sugimoto, Shintaro Suzuki, Ryuji Tamura, Takami Tohyama
{"title":"Revisiting the Magnetic Orders in Heisenberg Model for Tsai-Type Quasicrystal Approximant","authors":"Takanori Sugimoto, Shintaro Suzuki, Ryuji Tamura, Takami Tohyama","doi":"10.7566/jpsj.93.045001","DOIUrl":"https://doi.org/10.7566/jpsj.93.045001","url":null,"abstract":"The various magnetic orders observed in approximant crystals of a Tsai-type quasicrystal are important for deepening our understanding of magnetism in quasicrystals. Using an icosahedral cluster model with intercluster interactions, we provide an intuitive explanation of the mechanism of magnetic orders previously reported by classical Monte Carlo simulations of an effective Heisenberg model for Gd-based Tsai-type 1/1 approximant crystals.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"30 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140075429","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
Real-Space Formulation of Topology for Disordered Rice–Mele Chains without Chiral Symmetry 无手性对称的无序蓖麻链拓扑实空间模型
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-04 DOI: 10.7566/jpsj.93.044702
Kiminori Hattori, Ata Yamaguchi
{"title":"Real-Space Formulation of Topology for Disordered Rice–Mele Chains without Chiral Symmetry","authors":"Kiminori Hattori, Ata Yamaguchi","doi":"10.7566/jpsj.93.044702","DOIUrl":"https://doi.org/10.7566/jpsj.93.044702","url":null,"abstract":"In this paper, we derive a real-space topological invariant that involves all energy states in the system. This global invariant, denoted by <i>Q</i>, is always quantized to be 0 or 1, independent of symmetries. In terms of <i>Q</i>, we numerically investigate topological properties of the nonchiral Rice–Mele model including random onsite potentials to show that nontrivial bulk topology is sustained for weak enough disorder. In this regime, a finite spectral gap persists, and then <i>Q</i> is definitely identified. We also consider sublattice polarization of disorder potentials. In this case, the energy spectrum retains a gap regardless of disorder strength so that <i>Q</i> is unaffected by disorder. This implies that bulk topology remains intact as long as the spectral gap opens.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"45 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025066","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
Phase Transition Temperatures of a Nematic Liquid Crystal in the Presence of Noise and DC Fields 噪音和直流电场下向列液晶的相变温度
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-04 DOI: 10.7566/jpsj.93.044601
Jong-Hoon Huh, Takumu Higashi, Tatsuya Yamasaki, Tomoyuki Nagaya
{"title":"Phase Transition Temperatures of a Nematic Liquid Crystal in the Presence of Noise and DC Fields","authors":"Jong-Hoon Huh, Takumu Higashi, Tatsuya Yamasaki, Tomoyuki Nagaya","doi":"10.7566/jpsj.93.044601","DOIUrl":"https://doi.org/10.7566/jpsj.93.044601","url":null,"abstract":"Thermal phase transitions from a nematic liquid-crystal phase to an isotropic phase are reported in this study. The phase transition temperature <i>T</i><sub>c</sub> under noise and DC fields was examined during continuous heating processes with different heating rates <i>R</i> (1–10 °C/min). <i>T</i><sub>c</sub> was determined as functions of the noise intensity <i>V</i><sub>N</sub> and the DC intensity <i>V</i>. Evidently, <i>T</i><sub>c</sub> shows different behavior with respect to the fields at fixed values of <i>R</i>. <i>T</i><sub>c</sub> decreased monotonously with <i>V</i><sub>N</sub>, whereas it exhibited nonmonotonic behavior in <i>T</i><sub>c</sub>(<i>V</i>). These shifts in <i>T</i><sub>c</sub> are quite different from that previously observed in the AC field. It was found that DC field-induced electroconvection is responsible for the unexpected nonmonotonic behavior. In particular, the transition between the dynamic scattering modes (i.e., DSM1 and DSM2) may be related to this behavior. The different behavior for the noise and DC fields was confirmed using various values of <i>R</i>. Furthermore, the present results in comparison with the previous results for the AC field were discussed.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"47 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025093","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
Singlet Even-Frequency and Triplet Odd-Frequency Superconductivity in the Two-Band Hubbard Model Based on the Dynamical Mean-Field Theory 基于动态均场理论的双波段哈伯模型中的单子偶频和三子奇频超导现象
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-04 DOI: 10.7566/jpsj.93.043701
Yusuke Inokuma, Yoshiaki Ōno
{"title":"Singlet Even-Frequency and Triplet Odd-Frequency Superconductivity in the Two-Band Hubbard Model Based on the Dynamical Mean-Field Theory","authors":"Yusuke Inokuma, Yoshiaki Ōno","doi":"10.7566/jpsj.93.043701","DOIUrl":"https://doi.org/10.7566/jpsj.93.043701","url":null,"abstract":"Superconductivity in the two-band Hubbard model characterized by the on-site Coulomb repulsion <i>U<sub>d</sub></i> at <i>d</i>-site and the charge-transfer energy Δ between <i>d</i>- and <i>p</i>-sites is investigated on the basis of the dynamical mean-field theory. We calculate the pair susceptibilities for the <i>s</i>-wave symmetries with spin-singlet even-frequency and spin-triplet odd-frequency pairings and determine the superconducting transition temperature <i>T</i><sub>c</sub> at which the pair susceptibilities diverge. In the strong correlation regime where the system becomes Mott insulator at half-filling, the triplet superconductivity takes place in underdoped region while the singlet one takes place in overdoped region. In the both cases, <i>T</i><sub>c</sub> shows a maximum in the crossover region between Mott–Hubbard type (<i>U<sub>d</sub></i> &lt; Δ) and charge-transfer type (<i>U<sub>d</sub></i> &gt; Δ). We also observe a remarkable BEC-BCS crossover at a slightly doped region in the triplet superconductivity.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"263 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140025060","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
Thermally Driven Untethered Swimmer Using a Convection Flow with the Eddy Current Loss Due to AC Magnetic Fields 利用交流磁场造成的涡流损耗的对流热驱动无系绳游泳器
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-03-01 DOI: 10.7566/jpsj.93.034802
Hideyuki Sugioka, Ryo Takeda
{"title":"Thermally Driven Untethered Swimmer Using a Convection Flow with the Eddy Current Loss Due to AC Magnetic Fields","authors":"Hideyuki Sugioka, Ryo Takeda","doi":"10.7566/jpsj.93.034802","DOIUrl":"https://doi.org/10.7566/jpsj.93.034802","url":null,"abstract":"Untethered microswimmers are essential for various applications. Here, we propose a thermally driven untethered swimmer using a convection flow with the eddy current loss due to AC magnetic fields and examine the performance of the swimmer. Specifically, we demonstrate that a floating object with a Cu oblique beam can be moved at a velocity of up to 1.8 mm/s by applying an AC magnetic field of 10.2 mT with a frequency of 11.7 kHz. Furthermore, by measuring the temperature of the Cu plate under the magnetic field, we clarify the role of the eddy current. In addition, we clarify the design concept of the convective swimmer from measurements at various angles of the oblique beam and applied magnetic fields. Our findings should contribute to the development of innovative untethered thermally driven microrobots and microswimmers.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"50 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003106","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 Renormalization Group Study of Quadrupole Kondo Effect with the Crystal-Field Excited State 带有晶场激发态的四极康多效应的数值重正化组研究
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-02-29 DOI: 10.7566/jpsj.93.033705
Yuki Kaneko, Hirokazu Tsunetsugu
{"title":"Numerical Renormalization Group Study of Quadrupole Kondo Effect with the Crystal-Field Excited State","authors":"Yuki Kaneko, Hirokazu Tsunetsugu","doi":"10.7566/jpsj.93.033705","DOIUrl":"https://doi.org/10.7566/jpsj.93.033705","url":null,"abstract":"We have studied the quadrupolar Kondo effect for an impurity in cubic environment with taking account of a singlet excited state Γ<sub>1</sub>, which models a Pr<sup>3+</sup> ion with a non-Kramers double ground state Γ<sub>3</sub>. We have used the numerical renormalization group approach and determined the phase diagram with varying quadrupole Kondo coupling <i>J</i> and Γ<sub>1</sub> excitation energy Δ. Two phases are found and identified as local Fermi liquid and non-Fermi liquid. This non-Fermi liquid phase is characteristic to the two-channel Kondo impurity, and a similar phase diagram has been also found in other extended quadrupole models. We have analyzed in detail the <i>J</i>-dependence of the Kondo temperature <i>T<sub>K</sub></i> near the phase boundary <i>J<sub>c</sub></i>(Δ) and found a nice scaling behavior with an stretched exponential form <i>T<sub>K</sub></i> ∼ <i>δJ<sup>α</sup></i> exp(−const./<tex-math space=\"preserve\" version=\"MathJax\">(sqrt{delta J} )</tex-math>) where <i>δJ</i> ≡ <i>J</i> − <i>J<sub>c</sub></i>(Δ). This differs from the standard scaling form and indicates that one needs to consider renormalization of multiple coupling constants.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"28 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003343","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
Conversion of Chiral Phonons into Magnons in Ferromagnets and Antiferromagnets 铁磁体和反铁磁体中手性声子向磁子的转化
IF 1.7 4区 物理与天体物理
Journal of the Physical Society of Japan Pub Date : 2024-02-28 DOI: 10.7566/jpsj.93.034708
Dapeng Yao, Shuichi Murakami
{"title":"Conversion of Chiral Phonons into Magnons in Ferromagnets and Antiferromagnets","authors":"Dapeng Yao, Shuichi Murakami","doi":"10.7566/jpsj.93.034708","DOIUrl":"https://doi.org/10.7566/jpsj.93.034708","url":null,"abstract":"Chiral phonons with atomic rotations converted into electron spins result in a change of spin magnetizations in crystals. In this paper, we investigate a new conversion of chiral phonons into magnons both in ferromagnets and antiferromagnets by spin models with exchange and Dzyaloshinskii–Moriya interactions. The atomic rotations in chiral phonons are treated as slow phonons, which modulate spin–spin interaction and induce time-dependent magnon excitations due to geometric effect within adiabatic approximation. We demonstrate that a non-trivial change of the number of magnons requires breaking of the spin-rotation symmetry around the spin quantization axis. As a result, the clockwise and counterclockwise chiral phonons induce a change of the magnon number with opposite signs, which corresponds to an increasing or decreasing spin magnetization due to the chiral nature of the atomic rotations. In particular, in antiferromagnets, the modulation of magnons due to chiral phonons generates a non-zero net magnetization by the proposed effect, which is expect to be observed in experiments.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"2017 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003606","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
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：481959085
Book学术官方微信