Article
Physics, Multidisciplinary
Vidya Devi, Jagjit Singh Matharu
Summary: The variable moment of inertia (VMI) model is utilized to study the properties of superdeformed (SD) bands in the A < 100 mass region. Experimental results show that the VMI model provides a comprehensive interpretation for spin assignments and properties of SD bands in light mass region nuclei.
Article
Engineering, Multidisciplinary
Attila Szanto, Eva Adamko, Gyorgy Juhasz, Gusztav Aron Sziki
Summary: This paper presents a method for simultaneously measuring the moment of inertia and braking torque of electric motor rotors. The method involves conducting retardation tests on the motor with additional loads of different moments of inertia but equal masses. The optimal values of the loading moments of inertia are determined to minimize measurement errors. The effect of temperature changes on the measurement accuracy is also analyzed and discussed.
Article
Physics, Applied
Lijun Zhu, Robert A. Buhrman
Summary: After a decade of intensive theoretical and experimental explorations, it remains in dispute whether interfacial spin-orbit coupling at metallic magnetic interfaces can effectively generate a spin current. Utilizing Ti/Fe-Co-B bilayers with unique properties, the study found no significant charge-to-spin conversion at magnetic interfaces, even with stronger ISOC than a typical Pt/ferromagnet interface. Additionally, a minimal orbital Hall effect was observed in 3d Ti.
PHYSICAL REVIEW APPLIED
(2021)
Article
Multidisciplinary Sciences
Hai-Yang Ma, Mengli Hu, Nana Li, Jianpeng Liu, Wang Yao, Jin-Feng Jia, Junwei Liu
Summary: The study introduces a new type of spin-valley locking enabled by crystalline symmetry, allowing for the generation of valley polarizations, net magnetization, and non-collinear spin currents, providing new possibilities for multifunctional antiferromagnetic materials.
NATURE COMMUNICATIONS
(2021)
Article
Physics, Particles & Fields
Wenqi Ke, Pietro Slavich
Summary: This study investigates the impact of the quartic coupling of the SM-like Higgs boson on SUSY models, even in cases where all new particle masses are higher than the LHC's current scale. Specifically, the study focuses on a recently-proposed SUSY model with two pairs of Higgs doublets, which solves the (g-2)(μ) anomaly through an enhanced muon Yukawa coupling.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Materials Science, Multidisciplinary
J. C. Debnath, Shams Forruque Ahmed, J. L. Wang
Summary: Different factors of electronic correlations directly relate with the fundamentals of condensed matter physics. Exploration of novel materials has an important character in developing the level of understanding of magnetic properties in correlated matters. In this study, the Ce4RuMg material was investigated to improve the knowledge of correlated systems, and various physical properties were measured at different temperatures. The results suggest the presence of antiferromagnetic phase and heavy fermion-like behavior in Ce4RuMg.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Astronomy & Astrophysics
Alexei Bazavov, Christine Davies, Carleton Detar, Aida X. El-Khadra, Elvira Gamiz, Steven Gottlieb, William I. Jay, Hwancheol Jeong, Andreas S. Kronfeld, Shaun Lahert, G. Peter Lepage, Michael Lynch, Andrew T. Lytle, Paul B. Mackenzie, Craig Mcneile, Ethan T. Neil, Curtis T. Peterson, Gaurav Ray, James N. Simone, Ruth S. Van de Water, Alejandro Vaquero
Summary: In this study, we employed lattice-QCD to calculate the light-quark connected contribution to window observables associated with the anomalous magnetic moment of the muon. The results were combined using Bayesian model averaging to obtain robust estimates of the associated systematic uncertainties.
Editorial Material
Instruments & Instrumentation
Paul Quincey
Summary: Leonard's comment argues against changing the units for torque, angular momentum, and moment of inertia if angle is considered a base quantity with radians as its base unit. The proposed revised units would maintain established general relationships and solve the problem of angles being treated as numbers within the SI.
Article
Engineering, Electrical & Electronic
Talat Korpinar, Zeliha Korpinar, Mustafa Yeneroglu
Summary: In this manuscript, we obtain the optical angular momentum and spherical magnetic moment using the optical spherical frame and discuss their phases and densities. Additionally, we design an electroosmotic magnetic torque density with an antiferromagnetic model.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Physics, Particles & Fields
Hamza Boumaza
Summary: This paper investigates a slowly rotating star model within a shift symmetric scalar torsion theory framework, showing that model parameters affect the physical properties such as mass, radius, and moment of inertia, with relative deviations below 10% for different equations of state.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Engineering, Civil
Eber Alberto Godinez-Dominguez, Arturo Tena-Colunga, Isidro Velazquez-Gutierrez, Roman Ernesto Silvestre-Pascacio
Summary: The bending stiffness of RC cracked building beams was evaluated for lateral analysis under seismic loading. An equation for the assessment of cracked moment of inertia was proposed based on extensive sectional analyses. The effective flexural stiffness of typical RC building beams was also assessed taking into account span-to-depth ratio and proposed moment of inertia of the cracked section.
ENGINEERING STRUCTURES
(2021)
Article
Physics, Nuclear
Xingjian Shi, Zhiming Cai
Summary: The in-orbit magnetic property of Taiji-1 is crucial for enhancing the satellite's attitude-control performance and the acceleration noise model of the gravitational reference sensor. By using the global optimization method, the remnant magnetic moment of Taiji-1 is estimated to be (-1.42 -0.19 -0.06) Am-2.
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2021)
Article
Astronomy & Astrophysics
Jose Alonso Carpio, Kohta Murase, Ian M. Shoemaker, Zahra Tabrizi
Summary: Based on the recent muon g-2 experiment data, we investigate the implications of a gauged Lμ-Lτ model for high energy neutrino telescopes. The model suggests that a new gauge boson at the MeV scale can explain the muon g-2 data and alleviate the tension in Hubble parameter measurements. We find that the observed IceCube data overlaps with the parameter space that can explain the muon g-2 anomaly and Hubble tension, and future neutrino telescopes like IceCube-Gen2 can probe this unique parameter space, providing important information on the neutrino mass.
Article
Optics
D. Zinenko, D. A. Glazov, V. P. Kosheleva, A. V. Volotka, S. Fritzsche
Summary: We present a systematic QED treatment of electron correlation effects on the g factor of lithiumlike ions for a wide range of nuclear charge numbers (Z = 14-82). The one-and two-photon exchange corrections are evaluated rigorously using the QED formalism. Electron-correlation contributions of third and higher orders are accounted for within the Breit approximation, employing the recursive perturbation theory. The calculations are performed in the extended Furry picture with inclusion of the effective local screening potential in the zeroth-order approximation. Compared to previous theoretical calculations, the accuracy of the interelectronic-interaction contributions to the bound electron g factor in lithiumlike ions is substantially improved.
Article
Engineering, Electrical & Electronic
Zengyuan Yin, Yuanwen Cai, Yuan Ren, Weijie Wang
Summary: The paper proposes a torque separation method for accurately measuring the torque coefficient of magnetically suspended control and sensitive gyroscope (MSCSG). By separating the precession moment and gyroscopic moment, the method eliminates the coupling between the moments and improves measurement accuracy.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Physical
Y. W. Windsor, S-E Lee, D. Zahn, V Borisov, D. Thonig, K. Kliemt, A. Ernst, C. Schuessler-Langeheine, N. Pontius, U. Staub, C. Krellner, D. V. Vyalikh, O. Eriksson, L. Rettig
Summary: This study investigates the magnetization dynamics in 4f antiferromagnets and shows that the rate of direct transfer between opposing moments is directly determined by the magnitude of the Ruderman-Kittel-Kasuya-Yosida (RKKY) coupling energy. The results offer a useful approach for fine tuning the speed of magnetic devices.
Article
Nanoscience & Nanotechnology
Daria Belotcerkovtceva, Renan P. Maciel, Elin Berggren, Ramu Maddu, Tapati Sarkar, Yaroslav O. Kvashnin, Danny Thonig, Andreas Lindblad, Olle Eriksson, M. Venkata Kamalakar
Summary: The adherence of metal oxides to graphene is crucial for graphene nanoelectronics and spintronics interfaces. This study reveals a fundamental difference in how titanium oxide and aluminum oxide interface with graphene. Titanium oxide induces minimal p-type doping, while the aluminum oxide interface exhibits significant sp3 defects. The sp3 hybridization at the aluminum oxide/graphene interface leads to distinct magnetic moments and suggests possibilities for new hybrid resistive switching and spin valves.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Vladislav Borisov, Qichen Xu, Nikolaos Ntallis, Rebecca Clulow, Vitalii Shtender, Johan Cedervall, Martin Sahlberg, Kjartan Thor Wikfeldt, Danny Thonig, Manuel Pereiro, Anders Bergman, Anna Delin, Olle Eriksson
Summary: This study reports the stabilization of Skyrmions in novel magnetic systems with the B20 crystal structure primarily based on theoretical results. The research focuses on the effect of alloying on the 3d sublattice of the B20 structure to tune the spin-orbit coupling and magnetic interactions. Theoretical calculations and simulations reveal significant enhancement of the Dzyaloshinskii-Moriya interaction and smaller skyrmion size for 5d-doped FeSi and CoSi materials. It is also predicted that all B20 compounds considered in this study are structurally stable at elevated temperatures.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Corisa Kons, Kathryn L. Krycka, Joshua Robles, Nikolaos Ntallis, Manuel Pereiro, Manh-Huong Phan, Hariharan Srikanth, Julie A. Borchers, Dariio A. Arena
Summary: We study the spatial distribution of spin orientation in magnetic nanoparticles with hard and soft magnetic layers. The nanoparticles have a core-shell structure, with a CoFe2O4 (CFO) core and a Fe3O4 (FO) shell. The high-resolution electron microscopy confirms the coherent spinel structure across the core-shell boundary in both variants. Magnetometry shows that the nanoparticles are superparamagnetic at room temperature but develop anisotropy at reduced temperatures. Small-angle neutron scattering (SANS) reveals a pronounced difference in the reversal process of magnetization parallel to the field for the two nanoparticle variants. These findings highlight the interplay between interfacial exchange coupling and anisotropy in tuning the properties of the nanoparticles for potential applications.
ACS APPLIED NANO MATERIALS
(2023)
Article
Physics, Multidisciplinary
Yuefei Liu, Anders Bergman, Andrey Bagrov, Anna Delin, Danny Thonig, Manuel Pereiro, Olle Eriksson, Simon Streib, Erik Sjoeqvist, Vahid Azimi-Mousolou
Summary: In this work, the existence of entangled steady-states in bipartite quantum magnonic systems at elevated temperatures is reported. The dissipative dynamics of two magnon modes in a bipartite antiferromagnet, coupled with a phonon mode and an external rotating magnetic field, are considered. The entanglement between the bipartite magnons is quantified using entanglement negativity, and its dependence on temperature and magnetic field is calculated. Evidence is provided that the coupling between the magnon and phonon modes is necessary for the entanglement, and it is shown that for specific phonon frequency and magnon-phonon coupling rate, there are always ranges of magnetic field amplitudes and frequencies where magnon-magnon entanglement persists at room temperature.
NEW JOURNAL OF PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Vahid Azimi-Mousolou, Anders Bergman, Anna Delin, Olle Eriksson, Manuel Pereiro, Danny Thonig, Erik Sjoqvist
Summary: Studying the quantum properties of magnons in antiferromagnetic materials is important for the development of nanomagnetism and energy efficient quantum technologies. Hybrid systems based on superconducting circuits enable effective coupling between magnons and transmon qubits, with the characteristics of magnons characterized by the Rabi frequency of the transmon.
Article
Materials Science, Multidisciplinary
M. Pankratova, I. P. Miranda, D. Thonig, M. Pereiro, E. Sjoqvist, A. Delin, O. Eriksson, A. Bergman
Summary: In this study, an alternative formulation for modeling spin, electron, and lattice temperatures in magnetization dynamics simulations is proposed. The model evaluates the heat distribution of the spin and lattice subsystems during the simulation, leading to better fitting of experimental data for fcc Ni. The way in which the heat capacities of electron, spin, and lattice are described also affects the simulated ultrafast dynamics.
Article
Optics
Vahid Azimi-Mousolou, Anders Bergman, Anna Delin, Olle Eriksson, Manuel Pereiro, Danny Thonig, Erik Sjoqvist
Summary: We investigate the entanglement properties of thermal states in spin-1/2 dimers under an external magnetic field. The entanglement transition in the temperature-magnetic-field plane reveals a duality in spin-spin interactions, with a pair of symmetric and antisymmetric dimers identified as dual categories. Each category is further classified into toric entanglement classes. The entanglement transition line is preserved from each toric entanglement class to its dual toric class. The toric classification indicates the topological signature of entanglement, suggesting potential topological stability for quantum information processing.
Article
Materials Science, Multidisciplinary
Nikolaos Ntallis, Corisa Kons, Hariharan Srikanth, Manh-Huong Phan, D. A. Arena, Manuel Pereiro
Summary: In this study, the magnetic properties of ferrite nanoparticles were investigated using theoretical techniques based on Monte Carlo methods. Different levels of complexity were introduced to the macro-magnetic model, allowing for the study of single nanoparticles, core-shell nanoparticles, and assemblies of nanoparticles. The results showed good agreement with experimental data, providing an important tool for understanding the internal structure and spin interactions of ferrite nanoparticles.
Article
Materials Science, Multidisciplinary
Simon Streib, Ramon Cardias, Manuel Pereiro, Anders Bergman, Erik Sjoqvist, Cyrille Barreteau, Anna Delin, Olle Eriksson, Danny Thonig
Summary: In this article, an implementation of the adiabatic spin dynamics approach in a tight-binding description of the electronic structure is considered. The authors demonstrate the stability of noncollinear magnetic configurations using a constraining field, and propose a method to extract an effective two-spin exchange interaction from the energy curvature tensor of noncollinear states. The relevance of these results is discussed with respect to experimental pump-probe experiments.
Article
Materials Science, Multidisciplinary
Ramon Cardias, Attila Szilva, Anders Bergman, Yaroslav Kvashnin, Jonas Fransson, Simon Streib, Anna Delin, Mikhail I. Katsnelson, Danny Thonig, Angela Burlamaqui Klautau, Olle Eriksson, Lars Nordstrom
Summary: This paper critiques earlier works on analyzing low-energy spin Hamiltonians and focuses on the large noncollinear contributions to the Dzyaloshinskii-Moriya interaction (DMI). It clarifies the microscopic mechanisms for the large DMI in noncollinear magnets and outlines the complementary nature of different parametrizations of a spin Hamiltonian.
Article
Materials Science, Multidisciplinary
Nikolaos Ntallis, Vladislav Borisov, Yaroslav O. Kvashnin, Danny Thonig, Erik Sjoqvist, Anders Bergman, Anna Delin, Olle Eriksson, Manuel Pereiro
Summary: In this study, a reliable derivation of the effective spin Hamiltonian for the metal-insulator transition in NaOsO3 driven by antiferromagnetic order was achieved through ab initio electronic-structure calculations and linear spin-wave theory. The results showed Heisenberg couplings smaller than those proposed in the literature, along with Dzyaloshinskii-Moriya interactions and anisotropic exchange interactions that successfully reproduced experimental data. The spin-wave gap was found to be determined by a subtle interplay between various factors, supporting a local-moment description of the magnetic excitation spectra in NaOsO3.