Journal of the Physical Society of Japan最新文献_第2页

Possible Unconventional s-Wave Pairing with Point-Node–Like Gap Structure in UTe2 碲化镉(UTe2)中可能存在的非常规 s 波配对与点节点状间隙结构

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-30 DOI: 10.7566/jpsj.93.063701

Shingo Haruna, Takuji Nomura, Hirono Kaneyasu

引用次数: 0

Large Cyclotron Effective Masses in Antiferromagnet SmTi2Al20 Compared with Conventional Masses in Ferromagnet SmNi2Cd20 and Antiferromagnet SmPd2Cd20 反铁磁体 SmTi2Al20 中的大回旋加速器有效质量与铁磁体 SmNi2Cd20 和反铁磁体 SmPd2Cd20 中的常规质量相比

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-26 DOI: 10.7566/jpsj.93.054710

Md Asif Afzal, Yoshichika Ōnuki, Dai Aoki, Hisatomo Harima, Ryuji Higashinaka, Yuji Aoki, Tatsuma D. Matsuda

{"title":"Large Cyclotron Effective Masses in Antiferromagnet SmTi2Al20 Compared with Conventional Masses in Ferromagnet SmNi2Cd20 and Antiferromagnet SmPd2Cd20","authors":"Md Asif Afzal, Yoshichika Ōnuki, Dai Aoki, Hisatomo Harima, Ryuji Higashinaka, Yuji Aoki, Tatsuma D. Matsuda","doi":"10.7566/jpsj.93.054710","DOIUrl":"https://doi.org/10.7566/jpsj.93.054710","url":null,"abstract":"We grew high-quality single crystals of a ferromagnet SmNi2Cd20, an antiferromagnet SmPd2Cd20, and an antiferromagnet SmTi2Al20 with the cubic cage structure by the self-flux method and carried out the de Haas–van Alphen experiment to detect the large cyclotron effective masses of the main Fermi surfaces. This is because these compounds are reported to possess large electronic specific heat coefficients of 100–200 mJ/(K2·mol). We have succeeded in detecting the main Fermi surfaces. The corresponding cyclotron mass of a so-called valence-fluctuating compound SmTi2Al20 is surprisingly large, revealing 26 m0 (m0: rest mass of an electron). In SmTi2Al20, no Curie–Weiss term is found in the magnetic susceptibility, and the −log T dependence of the electrical resistivity is observed at low temperatures. On the other hand, the conventional masses of 2.1 m0 are obtained in SmNi2Cd20 and SmPd2Cd20, following the Curie–Weiss law in the magnetic susceptibility.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"34 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140799037","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

Vanishing of Resistivity upon Freezing of Vortex Liquid in Clean Superconductors 洁净超导体中涡流液体冻结时电阻率的消失

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-26 DOI: 10.7566/jpsj.93.054712

Naratip Nunchot, Ryusuke Ikeda

引用次数: 0

Realistic Simulation of Valence-Band Photoemission Spectra by Using First-Principles Calculations on the Basis of FLAPW Method 在 FLAPW 方法的基础上利用第一原理计算真实模拟价带光发射光谱

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-24 DOI: 10.7566/jpsj.93.054709

Noriaki Hamada, Satoshi Nakamura, Kenta Takahashi, Mario Okawa, Tomohiko Saitoh

{"title":"Realistic Simulation of Valence-Band Photoemission Spectra by Using First-Principles Calculations on the Basis of FLAPW Method","authors":"Noriaki Hamada, Satoshi Nakamura, Kenta Takahashi, Mario Okawa, Tomohiko Saitoh","doi":"10.7566/jpsj.93.054709","DOIUrl":"https://doi.org/10.7566/jpsj.93.054709","url":null,"abstract":"In order to reproduce experimental photoemission spectroscopy (PES) data by using band structure calculations with linearized augmented-plane-wave method, we developed a new method to calculate the atomic-subshell photoelectron differential cross section (PE-DCS) of the valence band. PE-DCS was calculated to be the sum of the products of the partial density of states (PDOS) and the photoionization differential cross section (PI-DCS) of each atomic subshell. To construct an appropriate PDOS beyond the conventional muffin-tin sphere (MTS) PDOS, we proposed a “nearly-neutral atomic sphere”, which can be defined as a natural extension of MTS. Although the calculational method for atomic-subshell PI-DCS was the standard Hartree–Fock–Slater method, we developed a new computer code in order to deal with the unoccupied electron shells in the ground state of isolated atoms up to ∼10 keV. Details of the PE-DCS calculations were examined by using two simple examples of Na metal and NaCl, and then, the method was applied to hard x-ray PES (HX-PES) data of CuAlO2. The experimental spectra were satisfactorily reproduced, demonstrating the potential applications of our method to HX-PES spectra of many compounds.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"83 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140798913","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

RKKY Interactions and Multipole Order in Ab initio Wannier Model of CeCoSi 钴硅的 Ab initio Wannier 模型中的 RKKY 相互作用和多极秩序

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-23 DOI: 10.7566/jpsj.93.053703

Takemi Yamada, Yuki Yanagi, Keisuke Mitsumoto

引用次数: 0

Intermolecular Correlations in Liquid Lactic Acid Based on ab initio Molecular Dynamics Simulations Combined with High-Energy X-ray Diffraction Measurements 基于ab initio分子动力学模拟和高能X射线衍射测量的液态乳酸分子间相关性研究

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-23 DOI: 10.7566/jpsj.93.054601

Kai Ito, Hironori Shimakura, Shuta Tahara, Koji Ohara, Akihide Koura, Kohei Shimamura, Fuyuki Shimojo

{"title":"Intermolecular Correlations in Liquid Lactic Acid Based on ab initio Molecular Dynamics Simulations Combined with High-Energy X-ray Diffraction Measurements","authors":"Kai Ito, Hironori Shimakura, Shuta Tahara, Koji Ohara, Akihide Koura, Kohei Shimamura, Fuyuki Shimojo","doi":"10.7566/jpsj.93.054601","DOIUrl":"https://doi.org/10.7566/jpsj.93.054601","url":null,"abstract":"The structural and bonding properties of liquid L-lactic acid were investigated through ab initio molecular dynamics simulations, leveraging on the agreement between the static structure factors obtained from high-energy X-ray diffraction (HEXRD) measurements. It has been demonstrated that predominant intermolecular interactions arise from hydrogen bonding. Hydrogen atoms in two hydroxy groups tend to form hydrogen bonds with two of the three oxygen atoms in neighboring molecules. This results in the presence of an oxygen atom in the hydroxy group of the carboxy group that does not significantly contribute to hydrogen bond formation with neighboring hydrogen atoms. This is consistent with the behavior observed in the crystalline phase. However, in the liquid state, four types of intermolecular hydrogen bonds are primarily formed, whereas in the crystal, only two types are observed. We show that the directionality of hydrogen bonds determines the intermolecular orientation. We thoroughly studied the structural properties and covalent bonding between atoms and charged states of atoms.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"40 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140636904","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

Multi-Triplon Excitations of Hubbard Ladders with Site-Dependent Potentials 哈伯梯的多三重子激发与位点相关电势

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-22 DOI: 10.7566/jpsj.93.054707

Nobuya Maeshima, Ken-ichi Hino

引用次数: 0

Investigation of Vibration and Sensing of Chalcogenide Microfiber Integrated with Hollow-core Fiber 研究与中空芯纤维集成的卤化铝超细纤维的振动和传感性能

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-18 DOI: 10.7566/jpsj.93.054401

Hongkun Guo, Huili Fan, Hui He, Liwen Cheng, Huibo Fan

{"title":"Investigation of Vibration and Sensing of Chalcogenide Microfiber Integrated with Hollow-core Fiber","authors":"Hongkun Guo, Huili Fan, Hui He, Liwen Cheng, Huibo Fan","doi":"10.7566/jpsj.93.054401","DOIUrl":"https://doi.org/10.7566/jpsj.93.054401","url":null,"abstract":"We propose and investigate a fiber-optic sensor of As2Se3 chalcogenide (ChG) microfiber laterally adhered on the hollow-core fiber (HCF) end face. HCF is fused with a single-mode fiber to form Fabry–Perot interferometer (FPI) between single-mode fiber (SMF) end face and ChG microfiber. ChG microfiber is ultra-sensitive to the small perturbations in the surroundings, because of its high refractive index and small Young’s modulus. Furthermore, relative to traditional fiber-optic FPI comprised by thin film, our proposed FPI with thin-diameter ChG microfiber could respond to mechanical vibrations over a broad range of frequencies. Based on finite-element simulation, ChG microfiber has ultra-broadband dynamic frequency response, up to several hundreds of megahertz accompanied by a very small response strength decay, in comparison to the frequency response of ChG film which is typically less than 30 MHz. ChG microfiber-based FPI is also used in the static refractometric sensing with sensitivity of 1563 nm/RIU. Such a novel fiber-optic sensor offers excellent potential for the nondestructive detection and advanced biomedical sensing.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"67 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140615465","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

Hydrostatic Pressure Studies on Non-Superconducting UTe2 非超导碲化镉 2 的静水压力研究

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-16 DOI: 10.7566/jpsj.93.055001

M. O. Ajeesh, Joe D. Thompson, Eric D. Bauer, Filip Ronning, Sean M. Thomas, Priscila F. S. Rosa

引用次数: 0

Evaluation of the Exchange Stiffness Constants of Itinerant Magnets at Finite Temperatures from the First-Principles Calculations 通过第一性原理计算评估有限温度下巡回磁体的交换刚性常数

IF 1.7 4区物理与天体物理

Journal of the Physical Society of Japan Pub Date : 2024-04-16 DOI: 10.7566/jpsj.93.054705

Akimasa Sakuma

{"title":"Evaluation of the Exchange Stiffness Constants of Itinerant Magnets at Finite Temperatures from the First-Principles Calculations","authors":"Akimasa Sakuma","doi":"10.7566/jpsj.93.054705","DOIUrl":"https://doi.org/10.7566/jpsj.93.054705","url":null,"abstract":"We attempted to evaluate the exchange stiffness constant, A(T) of fcc-Fe0.2Ni0.8 and L10-type FePt at finite temperatures employing the first-principles calculation. The spin fluctuation at a finite temperature was handled using the coherent potential approximation under the disordered-local-moment picture, and the A(T) was evaluated based on the free energy of spin spiral structure created in the effective medium representing the fluctuating spins. For fcc-Fe0.2Ni0.8, calculated A(0) was approximately 10 meV/Å. With increasing temperature, A(T) exhibits a linear-like decrease and becomes approximately 7 meV/Å at around room temperature which is in the range of experimentally expected value. This behavior somewhat deviates from the theoretical prediction considering a magnon–magnon scattering in the Heisenberg model. For FePt, we found a considerable anisotropy between A001(T) and A100(T) for spiral wave vectors along the directions of 〈001〉 and 〈100〉, respectively.","PeriodicalId":17304,"journal":{"name":"Journal of the Physical Society of Japan","volume":"3 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140576441","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