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Spin spirals form inside the magnetic layers of antiferromagnetic and noncollinearly-coupled magnetic multilayers in the presence of an external magnetic field. This spin structure can be modeled to extract the direct exchange stiffness of…

Mesoscale and Nanoscale Physics · Physics 2024-09-04 Elliot Wadge , Afan Terko , George Lertzman-Lepofsky , Paul Omelchenko , Bret Heinrich , Manuel Rojas , Erol Girt

A hallmark of materials with extremely large magnetoresistance (XMR) is the transformative 'turn-on' temperature behavior: when the applied magnetic field $H$ is above certain value, the resistivity versus temperature $\rho(T)$ curve shows…

Materials Science · Physics 2015-11-05 Y. L. Wang , L. R. Thoutam , Z. L. Xiao , J. Hu , S. Das , Z. Q. Mao , J. Wei , R. Divan , A. Luican-Mayer , G. W. Crabtree , W. K. Kwok

The magnetization M of a thin YBaCuO film is measured as a function of the angle $\theta $ between the applied field H and the c-axis. For fields above the first critical field, but below the Bean's field for first penetration H*, M is…

supr-con · Physics 2009-10-30 R. Prozorov , A. Poddar , E. Sheriff , A. Shaulov , Y. Yeshurun

In this paper, we propose a robust low-order stabilization-free virtual element method on quadrilateral meshes for linear elasticity that is based on the stress-hybrid principle. We refer to this approach as the Stress-Hybrid Virtual…

Numerical Analysis · Mathematics 2023-11-28 Alvin Chen , N. Sukumar

In dislocation-free martensites the components of the elastic strain tensor are constrained by the Saint-Venant compatibility condition which guarantees continuity of the body during external loading. However, in dislocated materials the…

Statistical Mechanics · Physics 2009-11-13 R. Gröger , T. Lookman , A. Saxena

Strain-mediated multiferroic composite structures are gaining scientific and technological attractions because of the promise of low power consumption and greater flexibility in material and geometry choices. In here, the direct…

Applied Physics · Physics 2021-05-24 Somer Nacy , George Youssef

In \cite{Lei}, the author derived an exact rotation-strain model in two dimensions for the motion of incompressible viscoelastic materials via the polar decomposition of the deformation tensor. Based on the rotation-strain model, the author…

Analysis of PDEs · Mathematics 2012-04-27 Zhen Lei

A magnetic model is proposed for describing the incommensurate I phase of spin-Peierls systems. Based on the harmonicity of the lattice distortion, its main ingredient is that the distortion of the lattice adjusts to the average…

Strongly Correlated Electrons · Physics 2009-10-31 G. S. Uhrig , F. Schoenfeld , J. P. Boucher

An ansatz applied to the two-dimensional Ising model in an external magnetic field h gives rise to an exactly soluble model. The singularity in the magnetization found by Onsager does not survive the presence of the external magnetic field…

Statistical Mechanics · Physics 2024-12-30 Moorad Alexanian

A previously published analytical magnetohydrodynamic model for the local interstellar magnetic field in the vicinity of the heliopause (R\"oken et al. 2015) is extended from incompressible to compressible, yet predominantly subsonic flow,…

Solar and Stellar Astrophysics · Physics 2017-04-05 J. Kleimann , C. Röken , H. Fichtner

We report a symmetry-resolved study of longitudinal magnetoelastoresistance (MER) in the multivalley material bismuth, with the current, uniaxial stress, and magnetic field all applied along the binary axis. The magnitude of MER exhibits a…

Symmetry constraints determine which physical responses are allowed in a given system. Magnetization induced by strain fields, such as in piezomagnetic and flexomagnetic effects, has typically been considered in materials that break…

Materials Science · Physics 2026-02-05 Shinnosuke Koyama , Takashi Koretsune , Kazumasa Hattori

We report a magnetotransport study of an ultra-high mobility ($\bar{\mu}\approx 25\times 10^6$\,cm$^2$\,V$^{-1}$\,s$^{-1}$) $n$-type GaAs quantum well up to 33 T. A strong linear magnetoresistance (LMR) of the order of 10$^5$ % is observed…

Mesoscale and Nanoscale Physics · Physics 2017-01-04 T. Khouri , U. Zeitler , C. Reichl , W. Wegscheider , N. E. Hussey , S. Wiedmann , J. C. Maan

A recently developed reduced model of H-mode sustainment based on interchange-drift-Alfv\'en turbulence description in the vicinity of the separatrix matching experimental observations in ASDEX Upgrade has been extended to experiments with…

Plasma Physics · Physics 2023-10-20 O. Grover , T. Eich , P. Manz , W. Zholobenko , T. Happel , T. Body , U. Plank , P. Ulbl , ASDEX Upgrade team

In this paper, we discuss recent progress in magnet-free non-reciprocal structures based on a synthetic form of angular momentum bias imparted via spatiotemporal modulation. We discuss how such components can support metrics of performance…

Signal Processing · Electrical Eng. & Systems 2021-12-22 Ahmed Kord , Andrea Alu

We consider a variational model for magnetoelastic solids in the large-strain setting with the magnetization field defined on the unknown deformed configuration. Through a simultaneous linearization of the deformation and sharp-interface…

Analysis of PDEs · Mathematics 2025-07-21 Marco Bresciani , Manuel Friedrich

Electrical detection of magnetization dynamics in magnetic insulators underpins both fundamental studies of magnon transport and the development of low-loss magnonic devices. In heavy-metal/magnetic-insulator heterostructures, spin pumping…

Mesoscale and Nanoscale Physics · Physics 2026-04-20 Hanchen Wang , William Legrand , Shangyuan Wang , Davit Petrosyan , Hiroki Matsumoto , Richard Schlitz , Ka Shen , Pietro Gambardella

The magnetic relaxation characteristics are investigated in the two-dimensional ($l^{}_x\times l^{}_y$) assembly of nanoparticles as a function of out-of-plane positional disorder strength $\Delta(\%)$ using numerical simulations. Such…

Materials Science · Physics 2021-09-28 Manish Anand

We present three-dimensional force-free electrodynamics simulations of magnetar magnetospheres that demonstrate the instability of certain degenerate, high energy equilibrium solutions of the Grad-Shafranov equation. This result indicates…

High Energy Astrophysical Phenomena · Physics 2019-11-26 J. F. Mahlmann , T. Akgün , J. A. Pons , M. A. Aloy , P. Cerdá-Durán

The X-ray spectra observed in the persistent emission of magnetars are evidence for the existence of a magnetosphere. The high-energy part of the spectra is explained by resonant cyclotron upscattering of soft thermal photons in a twisted…

High Energy Astrophysical Phenomena · Physics 2011-09-28 Daniele Viganò , Jose A. Pons , Juan A. Miralles