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Magnetic skyrmions are topological objects, which have recently been observed in thin films at room temperature. Sub 100-nm sizes and spin polarised current manipulation make them candidates for high density information storage and…

Mesoscale and Nanoscale Physics · Physics 2021-07-05 Laurent Ranno , Maria Alfonso Moro

Theory of weak localization is developed for two-dimensional holes in the presence of in-plane magnetic field. The Zeeman splitting even in the hole momentum results in the spin-dependent phase changing the quantum interference. The…

Mesoscale and Nanoscale Physics · Physics 2022-12-28 M. O. Nestoklon , L. E. Golub

Four discrete MnIII/MnII tetra-nuclear complexes with double-cuboidal core were synthesized. dc magnetic measurements show that both Mn2+ - Mn3+ and Mn3+ - Mn3+ magnetic interactions are ferromagnetic in three samples leading to an S = 9…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 L. Lecren , O. Roubeau , C. Coulon , Yang-Guang Li , X. Le Goff , W. Wernsdorfer , H. Miyasaka , R. Clerac

Star polymers with magnetically functionalized end groups are presented as a novel polymeric system whose morphology, self-aggregation, and orientation can easily be tuned by exposing these macromolecules simultaneously to an external…

Soft Condensed Matter · Physics 2019-04-03 David Toneian , Christos N. Likos , Gerhard Kahl

Context. A lot of effort has been put into the detection and determination of stellar magnetic fields using the spectral signal obtained from the combination of hundreds or thousands of individual lines, an approach known as multi-line…

Solar and Stellar Astrophysics · Physics 2016-12-07 J. C. Ramírez Vélez , M. J. Stift , S. G. Navarro , J. P. Córdova , L. Sabin , A. Ruelas-Mayorga

Optical skyrmions have recently been constructed by tailoring electric or spin field distributions through the interference of multiple surface plasmon polaritons, offering promising features for advanced information processing, transport…

Optics · Physics 2022-01-11 Zi-Lan Deng , Tan Shi , Alex Krasnok , Xiangping Li , Andrea Alù

We have investigated the magnetic Co atoms self-assembled on the ultraflat stanene on Cu(111) substrate by utilizing scanning tunneling microscopy/spectroscopy (STM/STS) in conjunction with density functional theory (DFT). By means of…

Materials Science · Physics 2022-02-03 Nitin Kumar , Ye-Shun Lan , Chia-Ju Chen , Yen-Hui Lin , Shih-Tang Huang , Horng-Tay Jeng , Pin-Jui Hsu

Magnetic skyrmions and their anti-particles, the antiskyrmions, are stable magnetic solitons existing down to the nanometer scale. Their stability and size as well as the possibility to propel them by, e.g., electric currents make them…

Mesoscale and Nanoscale Physics · Physics 2022-09-07 Pia Siegl , Martin Stier , Alexander F. Schäffer , Elena Y. Vedmedenko , Thore Posske , Roland Wiesendanger , Michael Thorwart

Although significant progress has been achieved in recent surveys of the magnetism in massive stars, the origin of the detected magnetic fields remains to be the least understood topic in their studies. We present an analysis of 61…

Solar and Stellar Astrophysics · Physics 2023-04-05 S. Hubrig , S. P. Jarvinen , I. Ilyin , M. Schöller , R. Jayaraman

We use soft x-ray vector-ptychographic tomography to determine the three-dimensional magnetization field in superparamagnetic nanoparticles self-assembled at the liquid-liquid interface and reveal the magnetic order induced by layered…

We numerically demonstrate an ultrafast method to create $\textit{single}$ skyrmions in a $\textit{collinear}$ ferromagnetic sample by applying a picosecond (effective) magnetic field pulse in the presence of Dzyaloshinskii-Moriya…

Mesoscale and Nanoscale Physics · Physics 2017-12-01 Vegard Flovik , Alireza Qaiumzadeh , Ashis K. Nandy , Changhoon Heo , Theo Rasing

The superfluid properties of the attractive Hubbard model in a Zeeman magnetic field, and in the weak coupling regime have been investigated. The temperature and magnetic field dependencies of the order parameter have been analyzed.…

Strongly Correlated Electrons · Physics 2008-08-13 Agnieszka Kujawa , Roman Micnas

Within this work a passive and wireless magnetic sensor, to monitor linear displacements is proposed. We exploit recent advances in 3D printing and fabricate a polymer bonded magnet with a spatially linear magnetic field component…

We present a high-rate projective measurement-based approach for controlling non-unitary evolution of a quantum chain of interacting spins. In this approach, we demonstrate that local measurement of a single external spin coupled to the…

Quantum Physics · Physics 2021-08-24 P. V. Pyshkin , E. Ya. Sherman , Lian-Ao Wu

For nearly a decade, observations have shown that many older Sun-like stars spin faster than predicted, a phenomenon known as weakened magnetic braking (WMB). The leading hypothesis for WMB is a weakening of the large-scale dipole field,…

Solar and Stellar Astrophysics · Physics 2025-09-17 Federica Chiti , Oleg Kochukhov , Jennifer L. van Saders , Travis S. Metcalfe

The magnetic-field-induced assembly of magnetic nanoparticles (NPs) provides a unique and flexible strategy in the design and the fabrication of functional nanostructures and devices. We have investigated the field-driven self-assembly of…

Mesoscale and Nanoscale Physics · Physics 2016-04-12 Zhendong Fu , Yinguo Xiao , Artem Feoktystov , Vitaliy Pipich , Marie-Sousai Appavou , Yixi Su , Erxi Feng , W. T. Jin , Thomas Brueckel

Exploring the origin and properties of magnetic fields is crucial to the development of many fields such as physics, astronomy and meteorology. We focus on the edge element approximation and theoretical analysis of celestial dynamo system…

Numerical Analysis · Mathematics 2023-07-10 Junqing Chen , Ming Sun

We construct both aligned and unaligned (logarithmic spiral) stationary configurations of nonaxisymmetric magnetohydrodynamic (MHD) disks from either a full or a partial razor-thin power-law axisymmetric magnetized singular isothermal disk…

Astrophysics · Physics 2009-11-10 Yu-Qing Lou

Colloidal self-replication represents an exciting research frontier in soft matter physics. Currently, all reported self-replication schemes involve coating colloidal particles with stimuli-responsive molecules to allow switchable…

Soft Condensed Matter · Physics 2015-11-10 J. M. Dempster , R. Zhang , M. Olvera de la Cruz

We have developed a fast method to design perpendicular permanent magnets for simplifying stellarator coils based on existing codes. Coil complexity is one of the main challenges for stellarators. To date, only electromagnetic coils have…

Plasma Physics · Physics 2020-05-13 Caoxiang Zhu , Michael Zarnstorff , David Gates , Arthur Brooks
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