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We formulate and solve the equations governing the dynamics of a microscopic artificial swimmer composed of a head and of a tail made of a thin film of permanent magnetic material. This is a variant of the model swimmer proposed by Dreyfus…

Soft Condensed Matter · Physics 2017-02-15 Francois Alouges , Antonio DeSimone , Laetitia Giraldi , Marta Zoppello

We report the construction and characterization of an experimental setup for producing a cold gas of $^{40}$Ca atoms and excite them to high Rydberg states with a resonant three-photon-excitation scheme. The apparatus comprises four stages,…

Mixed pairing in ultracold Fermi gases can give rise to interesting many-body phases, such as topological nontrivial superfluids that support Majorana zero modes (MZMs) with various spatial configurations. Unfortunately, in ordinary lattice…

Quantum Gases · Physics 2020-02-06 Yu-Biao Wu , Guang-Can Guo , Zhen Zheng , Xu-Bo Zou

We present the design of our iron-core electromagnet for BEC, and how to solve the specific experimental problems raised by this technique. After presenting the experimental set-up, we address the interruption of runaway evaporative cooling…

Atomic Physics · Physics 2007-05-23 P. Bouyer , V. Boyer , S. G. Murdoch , G. Delannoy , Y. Le Coq , A. Aspect , M. Lecrivain

Dark solitons in quantum fluids are well known nonlinear excitations that are usually characterized by a single length scale associated with the underlying background fluid. We show that in the presence of spin-orbit coupling and a linear…

Quantum Gases · Physics 2022-02-22 Antonio Muñoz Mateo , Xiaoquan Yu

Spin transfer torque (STT) affords magnetic nanodevices the potential to act as memory, computing, and microwave elements operating at ultra-low currents and at a low energy cost. Spin transfer torque is not only effective in manipulating…

Mesoscale and Nanoscale Physics · Physics 2014-09-19 Y. Zhou , E. Iacocca , A. Awad , R. K. Dumas , F. C. Zhang , H. B. Braun , J. Åkerman

Despite its potential for device application, the non-magnetic Zeeman effect has only been predicted and observed in two-dimensional compounds. We demonstrate that non-centrosymmetric three-dimensional compounds can also exhibit a…

Materials Science · Physics 2022-02-11 Carlos Mera Acosta , Adalberto Fazzio , Gustavo M. Dalpian

A hybrid lattice Boltzmann method (LBM) for binary mixtures based on the free-energy approach is proposed. Non-ideal terms of the pressure tensor are included as a body force in the LBM kinetic equations, used to simulate the continuity and…

Soft Condensed Matter · Physics 2015-05-13 A. Tiribocchi , N. Stella , G. Gonnella , A. Lamura

Efficient manipulation of magnetization at ultrashort time scales is of particular interest for future technology. Here, we numerically investigate the influence of the so-called field-derivative torque, which was derived earlier based on…

Materials Science · Physics 2019-10-02 Ritwik Mondal , Andreas Donges , Ulrike Ritzmann , Peter M. Oppeneer , Ulrich Nowak

Numerous attempts to estimate the rate at which low-mass stars lose angular momentum over their lifetimes exist in the literature. One approach is to use magnetic maps derived from Zeeman-Doppler imaging (ZDI) in conjunction with so-called…

Solar and Stellar Astrophysics · Physics 2020-05-13 Victor See , Lisa Lehmann , Sean P. Matt , Adam J. Finley

The inversion of a spin valve device is proposed. Opposite to a conventional spin valve of a non-magnetic spacer sandwiched between two ferromagnetic metals, an inverse spin valve is a ferromagnet sandwiched between two non-magnetic metals.…

Mesoscale and Nanoscale Physics · Physics 2008-01-14 X. R. Wang

We demonstrate a tuneable, chip-scale wavelength reference to greatly reduce the complexity and volume of cold-atom sensors. A 1 mm optical path length micro-fabricated cell provides an atomic wavelength reference, with dynamic frequency…

In this paper dynamic von Karman equations with localized interior damping supported in a boundary collar are considered. Hadamard well-posedness for von Karman plates with various types of nonlinear damping are well-known, and the…

Analysis of PDEs · Mathematics 2012-01-31 Pelin G. Geredeli , Irena Lasiecka , Justin T. Webster

Magnetic fields are an important ingredient to cool star physics, and there is great interest in measuring fields and their geometry in order to understand stellar dynamos and their influence on star formation and stellar evolution. During…

Solar and Stellar Astrophysics · Physics 2015-03-17 Ansgar Reiners

We present a new design of highly specialized small storage rings for low energy polarized electron beams. The new design is based on the transparent spin methodology that cancels the spin precession due to the magnetic dipole moment at any…

Accelerator Physics · Physics 2023-08-09 R. Suleiman , V. S. Morozov , Ya. S. Derbenev

Stellar magnetic dynamos are driven by rotation, rapidly rotating stars produce stronger magnetic fields than slowly rotating stars do. The Zeeman effect is the most important indicator of magnetic fields, but Zeeman broadening must be…

Solar and Stellar Astrophysics · Physics 2015-06-17 Ansgar Reiners

Two types of soliton solutions are analytically considered in a rhombic onedimensional lattice: transverse (discrete) solitons and longitudinal solitons. Based on the multi-scale method, longitudinal solitons are obtained as envelopes of…

Pattern Formation and Solitons · Physics 2025-06-10 Shaykin Dmitriy

In this paper, we consider a dissipative system of one-dimensional piezoelectric beam with magnetic effect and a tip load at the free end of the beam, which is modeled as a special form of double boundary dissipation. Our main aim is to…

Analysis of PDEs · Mathematics 2021-09-21 Yanning An , Wenjun Liu , Aowen Kong

We describe results concerning the existence proofs of Discrete Breathers (DBs) in the two classes of dynamical systems with optical linear phonons and with acoustic linear phonons. A standard approach is by continuation of DBs from an…

Condensed Matter · Physics 2007-05-23 S. Aubry , G. Kopidakis

The experimental realization of time dependent ultracold lattice systems has paved the way towards the implementation of new Hubbard-like Hamiltonians. We show that in a one dimensional two components lattice dipolar Fermi gas the…

Quantum Gases · Physics 2017-12-08 S. Fazzini , A. Montorsi , M. Roncaglia , L. Barbiero
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