Article
Materials Science, Multidisciplinary
J. Zhou, S. Cong, L. Zhang, W. Zhou, B. Qian, W. Zhao, F. Tang, Z. -d. Han, X. -F. Jiang, R. -K. Zheng, X. -C. Kan, J. Tang, Y. -Y. Han, X. -Q. Yin, Y. Fang, S. Ju, X. Shen
Summary: Rare-earth monopnictides, including TbSb, have attracted attention due to their exotic magnetic and electronic properties. In this study, high-quality TbSb single crystals were grown and their magnetic properties, such as antiferromagnetic phase transition and metamagnetic behaviors, were investigated. The specific heat data suggest a dominant G4 triplet state and weak magnetic anisotropy. TbSb exhibits extreme magnetoresistance and triangular temperature-field phase diagram, and the Hall resistivity measurements show varying carrier concentrations and mobilities in different magnetic states. The findings contribute to understanding the effects of spin ordering on angular magnetoresistance and electronic band structures in TbSb and related systems.
MATERIALS TODAY PHYSICS
(2022)
Article
Materials Science, Multidisciplinary
Xiaojun Yang, Junxiao Pan, Weizhuo Gai, Yaping Tao, Hong Jia, Leiming Cao, Yan Cao
Summary: The critical properties and magnetic entropy change of quasi-two-dimensional LaCrSb3 single crystals were systematically investigated. The critical exponents indicate a three-dimensional critical behavior and the magnetic entropy change exhibits strong anisotropic features.
Article
Materials Science, Multidisciplinary
Xiangwei Huang, Chunyu Guo, Carsten Putzke, Martin Gutierrez-Amigo, Yan Sun, Maia G. Vergniory, Ion Errea, Dong Chen, Claudia Felser, Philip J. W. Moll
Summary: The cascade of electronic phases in CsV3Sb5 provides an opportunity to study the mutual interactions in a clean, strongly interacting kagome lattice. CsV3Sb5 is a three-dimensional metal in the charge density wave state and exhibits anomalous magnetoresistance at low temperatures.
Article
Engineering, Multidisciplinary
Felipe Bastos de Freitas Rachid
Summary: This paper derives the Clausius-Duhem inequality for quasi-1D transient flows of compressible fluids in radially deformable pipes of varying cross-section area. It explores the implications and applications of this inequality, including numerical simulations of pipe flows and analysis of energy dissipation rates for different viscosity ratios.
APPLIED MATHEMATICAL MODELLING
(2021)
Article
Materials Science, Multidisciplinary
V. L. Katkov, V. A. Osipov
Summary: The study showed a sharp decrease in tunneling magnetoresistance in nanocontacts with mismatched cross section due to the different spatial distribution of electron density for majority and minority-spin states. The quantum size effect can also be a factor affecting the TMR ratio, which is important to consider when designing TMR-based nanodevices.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Hao-Ran Zu, Bian Wu, Biao Chen, Wen-Hua Li, Tao Su, Ying Liu, Wen-Xuan Tang, Da-Ping He, Tie-Jun Cui
Summary: Transparent metadevices based on quasi-one-dimensional surface plasmon polariton structures offer optical and radiofrequency transparency. They can be used to create arbitrarily shaped waveguides for transmission applications and converters for radiation applications. We demonstrate the potential of this technology by constructing a wireless communication scheme for image transfer using microwave metadevices.
NATURE ELECTRONICS
(2023)
Article
Physics, Multidisciplinary
Jing Zhou, Tingting Shi, Xia-Ji Liu, Hui Hu, Wei Zhang
Summary: We investigate the crossover from the BCS regime to the BEC regime in an anisotropic trapped quantum gas of ultracold fermionic atoms. By using a two-dimensional Hamiltonian with renormalized interactions and extending the Gaussian pair fluctuation theory to quasi-two-dimensional systems, we explore the effects of reduced dimensionality and Gaussian fluctuations on Fermi superfluidity at zero temperature. Our results are in good agreement with recent experiments on Li-6 atomic gases.
NEW JOURNAL OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
Y. -R Shi, Y. -R Wang, K. -Y Gao, W. Zhang
Summary: We study the dimensional crossover from anisotropically trapped three-dimensional to quasi-two-dimensional (quasi-2D) or quasi-one-dimensional (quasi-1D) configurations in the polaron problem of an impurity immersed in a Fermi sea. By calculating the ground-state energy in a wide range of interaction strength, we find that tighter confinement and lighter impurity mass prefer the polaron phase in lower dimensions. We also observe that a strictly low-dimensional system with all particles in the ground state cannot explain the polaron-molecule transition due to significant population of excited levels.
Article
Materials Science, Multidisciplinary
Huayan Xia, Sangjian Zhang, Hao Li, Tianli Li, Fang Liu, Wenchao Zhang, Wang Guo, Tian Miao, Wenjie Hu, Jian Shen, Yongli Gao, Junliang Yang, Mei Fang
Summary: This study investigates the effects of temperature, bias voltage, and direction of magnetic field on the magnetoresistance (MR) of vertical organic spin valve (OSV) devices, revealing the mechanisms and proposing a domain-switch model to simulate resistance changes. The research provides a new route to tune the MR in organic spintronic devices, which is significant for future functional device applications.
RESULTS IN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Wen -He Jiao, Shaozhu Xiao, Wei Liu, Yi Liu, Hang-Qiang Qiu, Keqi Xia, Shaolong He, Yuke Li, Guang-Han Cao, Xiaofeng Xu
Summary: Topological quantum materials, especially those with low dimensionality, have attracted significant attention in the field of condensed-matter physics due to their rich implications for topological physics and potential applications in next-generation spintronic devices. In this study, we investigated the crystal growth, magnetotransport properties, Hall effect, and quantum de Haas-van Alphen (dHvA) oscillations of a quasi-one-dimensional ternary telluride NbNiTe5. We observed pronounced dHvA oscillations with three major frequencies under a magnetic field, indicating the presence of holelike Fermi surface sheets formed by two different bands.
Article
Materials Science, Multidisciplinary
Atsutoshi Ikeda, Shanta Ranjan Saha, David Graf, Prathum Saraf, Danila Sergeevich Sokratov, Yajian Hu, Hidemitsu Takahashi, Soichiro Yamane, Anooja Jayaraj, Jagoda Slawinska, Marco Buongiorno Nardelli, Shingo Yonezawa, Yoshiteru Maeno, Johnpierre Paglione
Summary: This study reports on the Fermi surfaces and superconducting parameters of CaSb2 single crystals grown by the self-flux method. The research reveals a quasi-two-dimensional Fermi surface in CaSb2, consistent with the predicted Dirac lines. The results suggest that the formation of quasi-2D bands contributes to the superconductivity in CaSb2.
Article
Physics, Applied
Bin Cheng, Lin Li, Nan Zhang, Ling Zhang, Xianglin Li, Zhiyong Lin, Hui Li, Zhengfei Wang, Changgan Zeng
Summary: This study demonstrates the use of chirality, a new electronic degree of freedom, in the tellurium semiconductor. By developing a field-effect device, the researchers were able to effectively control the Fermi level and observe the simultaneous switching of both conductivity and topological states.
PHYSICAL REVIEW APPLIED
(2022)
Article
Multidisciplinary Sciences
Nico Huber, Valentin Leeb, Andreas Bauer, Georg Benka, Johannes Knolle, Christian Pfleiderer, Marc A. Wilde
Summary: After a century of research, the low-energy excitations in metals, which have been explained well by effective single-particle theories, now raise questions about spectroscopic signatures beyond single-particle, single-band behavior. This study identifies quantum oscillations in the topological semimetal CoSi that deviate from standard descriptions in two fundamental aspects. The findings are in agreement with generic model calculations and can help identify and measure correlation phenomena in various materials.
Article
Materials Science, Multidisciplinary
Yan Zhang, Yunyun Sun, Shijing Wu
Summary: This study investigates the effect of nanoscale asperity geometry and indentation depth on friction behaviors. The diamond asperities of cone, cosine, and hemisphere sliding on the copper substrate were analyzed based on asperity cross-section and longitudinal section area. The results show that asperity cross-section area is linearly related to friction force and plays a key role. In addition, wear volume is determined by and linearly related to asperity longitudinal section area. The simulated results of wear volume exhibit a slope agreement with the classical wear model in the steady phase, with a shift at the beginning.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Diqing Su, Joseph Um, Julian Moreno, Zohreh Nemati, Karthik Srinivasan, Junyang Chen, M. Reza Zamani Kouhpanji, Daniel Shore, Kai Wu, Jurgen Kosel, Jaime F. Modiano, Rhonda Franklin, Jian-Ping Wang, Bethanie Stadler
Summary: Magnetic nanowires (MNWs) were explored as potential magnetic tags for cell detection using GMR biosensors. A single MNW provided a signal 2500 times larger than a single magnetic iron oxide nanobead, making it suitable for ultra-low concentration cell detection. The orientation of MNWs with respect to the GMR sensor was found to impact detection performance. OSCA-8 cells tagged with Ni MNWs were successfully detected, with a limit of detection of 133 cells in aqueous solution.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Physics, Multidisciplinary
P. D. Grigoriev, A. D. Grigoriev, A. M. Dyugaev
JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS
(2019)
Article
Chemistry, Physical
Pavel A. Vorobyev, Pavel D. Grigoriev, Kaushal K. Kesharpu, Vladimir V. Khovaylo
Article
Physics, Condensed Matter
T. I. Mogilyuk, P. D. Grigoriev, K. K. Kesharpu, I. A. Kolesnikov, A. A. Sinchenko, A. V. Frolov, A. P. Orlov
PHYSICS OF THE SOLID STATE
(2019)
Article
Physics, Condensed Matter
P. D. Grigoriev, T. I. Mogilyuk, Aset Khamzauly
PHYSICS OF THE SOLID STATE
(2019)
Article
Physics, Multidisciplinary
A. M. Dyugaev, P. D. Grigoriev
Article
Crystallography
Kaushal K. Kesharpu, Vladislav D. Kochev, Pavel D. Grigoriev
Summary: In the highly anisotropic organic superconductor (TMTSF)(2)ClO4, embedded superconducting domains were analyzed using the Maxwell-Garnett approximation, revealing an oblate shape influenced by cooling rate and annealing time. The anisotropic resistivity drop at the superconducting onset and anisotropic Tc can be explained by considering the sample's finite size and shape. This theory may be applied to other heterogeneous superconductors with large domain sizes compared to the coherence length, such as cuprates, iron-based, or organic superconductors.
Article
Materials Science, Multidisciplinary
R. Ramazashvili, P. D. Grigoriev, T. Helm, F. Kollmannsberger, M. Kunz, W. Biberacher, E. Kampert, H. Fujiwara, A. Erb, J. Wosnitza, R. Gross, M. V. Kartsovnik
Summary: This study provides experimental evidence for the spin degeneracy phenomenon in a layered organic superconductor and an electron-doped cuprate superconductor, confirming the generic character of the Zeeman spin-orbit coupling.
NPJ QUANTUM MATERIALS
(2021)
Article
Physics, Multidisciplinary
P. D. Grigoriev, A. M. Dyugaev, T. Mogilyuk, A. D. Grigoriev
Summary: The rough inner walls of a trap for ultracold neutrons can be coated with a superfluid helium film to significantly reduce neutron loss rates. Triangular roughness is more effective than rectangular, easier to implement, and diffraction gratings with triangular roughness are industrially fabricated. Other methods are also proposed to increase the thickness of the protective helium film.
Article
Chemistry, Physical
Pavel D. D. Grigoriev, Vladislav D. D. Kochev, Andrey P. P. Orlov, Aleksei V. V. Frolov, Alexander A. A. Sinchenko
Summary: Heterogeneous superconductivity onset is a common phenomenon in high-Tc superconductors, and in this study, it is analyzed in FeSe samples of various thicknesses. The measurements of interlayer and intralayer resistivity provide valuable information about the superconducting domain structure. It is observed that as the sample thickness decreases, there is an increase in superconducting transition temperature Tc. Analytical and numerical calculations are used to analyze and understand the aspect ratio and size of the SC domains in FeSe.
Article
Chemistry, Inorganic & Nuclear
Vladislav D. Kochev, Seidali S. Seidov, Pavel D. Grigoriev
Summary: Most high-Tc superconductors are spatially inhomogeneous due to the interplay of electronic ordering. This paper analyzes the parameters of spatial phase segregation during the first-order transition in organic superconductors. The transition from a charge- or spin-density wave state to superconductivity is influenced by external factors, such as pressure, that affect the nesting of Fermi surfaces and suppress the density wave. The size of superconducting islands during this phase transition is estimated using both analytical and numerical methods.
Article
Physics, Nuclear
Pavel D. Grigoriev, Arseniy V. Sadovnikov, Vladislav D. Kochev, Alexander M. Dyugaev
Summary: To increase the storage time of ultracold neutrons (UCNs) in material traps, the idea of covering the trap walls with liquid helium (4He) is proposed. By applying an electric voltage to the rough side walls of the UCN traps, the thickness of liquid helium on the wall edges can be increased, ensuring complete protection of UCNs from absorption inside the trap walls. This improvement may result in the development of new-generation ultracold neutron traps with remarkably long storage time, while also considering the influence of the electric field on the dispersion of ripplons.
Article
Physics, Nuclear
P. D. Grigoriev, A. M. Dyugaev
Summary: The proposed method involves covering trap walls with liquid helium to reduce losses of ultracold neutrons in material traps. This allows for increased neutron storage time and improved precision in lifetime measurements. Considerations of low temperature and interaction with surface waves are important for using liquid helium for ultracold neutron storage.
Article
Materials Science, Multidisciplinary
Vladislav D. Kochev, Kaushal K. Kesharpu, Pavel D. Grigoriev
Summary: The study investigates the coexistence of superconductivity and density-wave state in organic superconductors, explaining observed experimental data by considering the finite size and flat needle shape of samples. This analysis provides a way to estimate the volume fraction and typical size of superconducting islands far from the sample surface, and can be applied to various inhomogeneous superconductors, including high-Tc cuprate or Fe-based ones.
Article
Materials Science, Multidisciplinary
P. D. Grigoriev, A. A. Sinchenko, P. A. Vorobyev, A. Hadj-Azzem, P. Lejay, A. Bosak, P. Monceau
Proceedings Paper
Physics, Multidisciplinary
P. D. Grigoriev, T. I. Mogilyuk
INTERNATIONAL CONFERENCE PHYSICA.SPB/2017
(2018)
