Article
Optics
S. Wenderoth, H-P Breuer, M. Thoss
Summary: The study found that in the spin-boson model, when the timescales of the system and bath are comparable, a complex nonmonotonic dependence of non-Markovianity on the system-bath coupling strength is observed.
Article
Chemistry, Physical
J. Brandao, D. A. Dugato, M. V. Puydinger dos Santos, Fanny Beron, J. C. Cezar
Summary: This study demonstrates the observation of spin spirals and individual skyrmions in synthetic Pt/CoGd/Pt ferrimagnetic multilayers at room temperature. The stable skyrmions with antiparallel exchange-coupling have potential applications in energy-efficient data storage and processing.
APPLIED SURFACE SCIENCE
(2022)
Article
Quantum Science & Technology
Hongyu Pei, Feng Liu, Wenfeng Fan, Shimiao Fan, Xiaoping Li, Jiayi Wei, Wei Quan
Summary: This paper investigates the dynamical properties of the spin-coupling ensemble and proposes a comprehensive dynamics model of the electron-nuclear spin coupling ensemble. The primary magnetic field is found to effectively disentangle the precession frequency of the two spin-coupling species, resulting in a spin-decoupled state. This state enables high sensitive magnetic field measurements and accurate measurements of electron spin Fermi contact interaction and polarization.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Materials Science, Multidisciplinary
P. Huillery, J. Leibold, T. Delord, L. Nicolas, J. Achard, A. Tallaire, G. Hetet
Summary: This study demonstrates the efficient transfer of electron spins to nuclear spins in NV centers under ambient conditions with uncritical magnetic field angles. This technique has the potential to enhance the sensitivity of NV sensors and could be utilized for long-lived storage of microwave photons and coupling nuclear spins to mechanical oscillators in the resolved sideband regime.
Article
Physics, Particles & Fields
Markus Q. Huber, Christian S. Fischer, Helios Sanchis-Alepuz
Summary: In this study, we calculate the glueball spectrum for spin up to J = 4 and positive charge parity in pure Yang-Mills theory. By constructing full bases for J = 0, 1, 2, 3, 4 and discussing the relation to gauge invariant operators, we obtain ground states and first and second excited states from extrapolations of the eigenvalue curves using a fully self-contained truncation of Dyson-Schwinger equations as input. Comparing our results with available lattice results, we find good quantitative agreement.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Multidisciplinary
I. A. Ado, O. Tchernyshyov, M. Titov
Summary: The study introduces a quartic chiral term that induces a phase transition and the formation of a noncollinear magnetic cone ground state in a ferromagnet. It is shown that an external magnetic field and four-spin chiral exchange can stabilize the noncollinear ground state.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Pengwei Dou, Jingyan Zhang, Yaqin Guo, Tao Zhu, Jia Luo, Guoping Zhao, He Huang, Guoqiang Yu, Yunchi Zhao, Jie Qi, Xiao Deng, Yuanbo Wang, Jialiang Li, Jianxin Shen, Xinqi Zheng, Yanfei Wu, Hongxin Yang, Baogen Shen, Shouguo Wang
Summary: This study reports on all electric-controlled magnetization switching in antiferromagnetic Co/Ir/Co trilayers with vertical magnetic imbalance. The switching polarity can be reversed by optimizing the Ir thickness. The polarized neutron reflection measurements reveal a canted noncollinear spin configuration in Co/Ir/Co trilayers, resulting from magnetic inhomogeneity. Micromagnetic simulations demonstrate asymmetric domain walls, caused by introduced imbalance magnetism, leading to deterministic magnetization switching in Co/Ir/Co trilayers.
Article
Mathematics, Applied
Renxiang Shi, Jiang Yu
Summary: Through computation, we have identified P-1(0,0,1) as a zero-Hopf equilibrium point in the nuclear spin generator system. Furthermore, we have proven the existence of two families of nuclear spin generator systems with this equilibrium point, as well as the bifurcation of a limit cycle from P-1(0,0,1) using first and second order averaging methods.
JOURNAL OF APPLIED ANALYSIS AND COMPUTATION
(2021)
Article
Multidisciplinary Sciences
H. Tanaka, S. Asao, Y. Shibutani
Summary: This study introduces a very low-frequency mode supported within an anisotropic structure, demonstrating both low- and high-frequency modes under auxetic transformations. The low-frequency mode approaches zero frequency when the corresponding spring constant tends to zero, and the microstructure with two degrees of freedom shows interesting behavior under anisotropic transformations.
ROYAL SOCIETY OPEN SCIENCE
(2021)
Article
Multidisciplinary Sciences
Andrey Jarmola, Sean Lourette, Victor M. Acosta, A. Glen Birdwell, Peter Bluemler, Dmitry Budker, Tony Ivanov, Vladimir S. Malinovsky
Summary: A rotation sensor based on N-14 nuclear spins intrinsic to NV color centers in diamond was demonstrated, showing high sensitivity and stability through optical polarization and radio-frequency pulse protocol. The device does not require microwave pulses resonant with NV electron spin transitions and achieved a sensitivity of 4.7 degrees/root s with a bias stability of 0.4 degrees/s.
Article
Chemistry, Inorganic & Nuclear
Wei Lv, Hui-Hui Cui, Lei Chen, Yi-Quan Zhang, Xue-Tai Chen, Zhenxing Wang, Zhong-Wen Ouyang, Zi-Ling Xue
Summary: Recently, the influence of ligand choice and geometric control on the magnetic properties of mononuclear Co(II) complexes has been studied. The results show that the coordination environment plays a significant role in the magnetic relaxation behavior of the complexes.
DALTON TRANSACTIONS
(2022)
Article
Physics, Multidisciplinary
Kuljeet Kaur, Theo Sepulcre, Nicolas Roch, Izak Snyman, Serge Florens, Soumya Bera
Summary: Superconducting circuits are developed as a versatile platform for exploring manybody physics, based on nonlinear elements idealized as two-level qubits. However, the intrinsic multilevel structure of superconducting qubits restricts the validity of the spin-boson paradigm. Numerical renormalization group simulations show that the quantum critical point moves out of the physically accessible range in the multilevel regime. Imposing charge discreteness in a simple variational state accounts for these multilevel effects.
PHYSICAL REVIEW LETTERS
(2021)
Article
Engineering, Mechanical
Yilong Wang, Yang Zhao, Yishen Tian, Dengqing Cao, Zhengbao Yang
Summary: The self-powered sensing technology based on gravity-rotation-excited vibration energy harvesting enables direct information acquisition from rotatory machines. To overcome the centrifugal effect caused by the offset distance, we propose using pre-deformed springs to counter the centrifugal force and improve the performance of the energy harvester. Experimental and simulation studies show significant performance improvement (up to 1225%) using linear springs. The introduction of negative springs for the quasi-zero stiffness structure further enhances the feasibility of the proposed mechanism.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2023)
Review
Physics, Multidisciplinary
Zhen Wu
Summary: This article reviews the progress made in the past six decades on the interaction between spin-polarized atoms and container walls, including the physical mechanisms of spin relaxation and the impact on frequency shift. However, issues related to antirelaxation coatings require further research and understanding.
REVIEWS OF MODERN PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
S. Vaitiekenas, R. Seoane Souto, Y. Liu, P. Krogstrup, K. Flensberg, M. Leijnse, C. M. Marcus
Summary: Through Coulomb blockade transport studies, we found that cotunneling features in the even-odd bias spectra of nanowires grown with superconducting Al and ferromagnetic insulator EuS on overlapping facets are associated with spin-polarized Andreev levels. Experimental results indicate that the zero-field spin splitting exceeds the induced superconducting gap and the energy of subgap states can be controlled by electrostatic gates.
Article
Physics, Multidisciplinary
I. Stetcu, C. A. Bertulani, A. Bulgac, P. Magierski, K. J. Roche
PHYSICAL REVIEW LETTERS
(2015)
Article
Physics, Multidisciplinary
Aurel Bulgac, Piotr Magierski, Kenneth J. Roche, Ionel Stetcu
PHYSICAL REVIEW LETTERS
(2016)
Article
Physics, Multidisciplinary
Gabriel Wlazlowski, Kazuyuki Sekizawa, Piotr Magierski, Aurel Bulgac, Michael McNeil Forbes
PHYSICAL REVIEW LETTERS
(2016)
Article
Physics, Multidisciplinary
Piotr Magierski, Kazuyuki Sekizawa, Gabriel Wlazlowski
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Multidisciplinary
P. Magierski, J. Grineviciute, K. Sekizawa
ACTA PHYSICA POLONICA B
(2018)
Article
Physics, Multidisciplinary
J. Grineviciute, P. Magierski, A. Bulgac, S. Jin, I. Stetcu
ACTA PHYSICA POLONICA B
(2018)
Article
Physics, Multidisciplinary
Gabriel Wlazlowski, Azuyuki Sekizawa, Maciej Marchwiany, Piotr Magierski
PHYSICAL REVIEW LETTERS
(2018)
Article
Physics, Multidisciplinary
Andrea Barresi, Antoine Boulet, Piotr Magierski, Gabriel Wlazlowski
Summary: In this study, the impact of quasiparticles localized inside vortices on dissipative dynamics in a fermionic superfluid was investigated through numerical simulations. The results showed that the contribution of these quasiparticles is too weak to explain the experimental measurements, and thermal effects dominated the observed dynamics.
PHYSICAL REVIEW LETTERS
(2023)
Article
Optics
Piotr Magierski, Gabriel Wlazlowski, Andrzej Makowski, Konrad Kobuszewski
Summary: This study presents the analysis of the structure of fermionic vortices with spin-polarized cores, from a weak coupling limit to the unitary regime. The mechanism for the generation of reversed circulation in the vortex core induced by an excess of majority spin particles is shown. A classification of polarized vortices based on the number of Fermi circles where the minigap vanishes is introduced. The study also analyzes the effective mass of quasiparticles along the vortex core and discusses its role in the propagation of spin-polarization along the vortex line.
Article
Optics
Antoine Boulet, Gabriel Wlazlowski, Piotr Magierski
Summary: In the context of density functional theory, this study proposes a method for investigating strongly correlated superfluid quantum systems by extending the local density approximation. By understanding the density dependence of quasiparticle properties, we can obtain accurate local density functionals without any adjustment. This opens up possibilities for further analysis of experimental data.
Article
Physics, Nuclear
Piotr Magierski, Andrzej Makowski, Matthew C. Barton, Kazuyuki Sekizawa, Gabriel Wlazlowski
Summary: This study investigates the collisions of 90Zr + 90Zr and 96Zr + 96Zr using the time-dependent superfluid local density approximation (TDSLDA), revealing new features in the collisions of two superfluid nuclei near the Coulomb barrier. These features include abrupt pairing phase for capture, effective repulsion between colliding nuclei, slower evolution of deformation towards a compact shape, and dynamically enhanced pairing correlations.
Article
Physics, Nuclear
Daniel Pecak, Nicolas Chamel, Piotr Magierski, Gabriel Wlazlowski
Summary: The study systematically examines the microscopic properties of a quantum vortex in neutron matter at various temperatures and densities, utilizing 3D calculations to analyze the flow around the vortex and calculate specific heat at low temperatures. It is found that the specific heat is substantially higher in the presence of a quantum vortex, with the low temperature limit being determined by Andreev states inside the vortex core. The research suggests that vortices may exhibit spin-polarization in the crust of magnetars.
Article
Optics
Piotr Magierski, Bugra Tuzemen, Gabriel Wlazlowski
Summary: The motion of spin-polarized impurity in ultracold atomic gas is determined by a critical velocity, which correlates with the spin imbalance inside the impurity. The effective mass of the impurity in two dimensions is calculated, showing a scaling relationship with the impurity's surface area. The instability of impurities near a vortex is demonstrated as a significant impact of these findings.
Article
Optics
Piotr Magierski, Bugra Tuzemen, Gabriel Wlazlowski
Proceedings Paper
Nuclear Science & Technology
Aurel Bulgac, Shi Jin, Piotr Magierski, Kenneth Roche, Nicolas Schunck, Ionel Stetcu
