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The time evolution of the magnetization of a magnetic molecular crystal is obtained in an external time-dependent magnetic field, with sweep rates in the kT/s range. We present the 'exact numerical' solution of the time dependent…

Mesoscale and Nanoscale Physics · Physics 2008-01-24 P. Foldi , M. G. Benedict , J. M. Pereira , F. M. Peeters

The behavior in magnetic fields of a highly correlated electron liquid approaching the fermion condensation quantum phase transition from the disordered phase is considered. We show that at sufficiently high temperatures $T\geq T^*(x)$ the…

Superconductivity · Physics 2009-11-10 V. R. Shaginyan

Magnetic nanoparticles (MNPs) have been proposed as an ultimate solution for diverse applications including nanomedicine and logic devices over decades. However, none has emerged revolutionary because realizing their magnetization response…

Applied Physics · Physics 2020-02-19 Mohammad Reza Zamani Kouhpanji , Pieter B Visscher , Bethanie J H Stadler

We present a model for the positive extreme magnetoresistance (XMR), recently observed in a plethora of metallic systems, such as PtSn$_4$, PtBi$_2$, PdCoO$_2$, WTe$_2$, NbSb$_2$, NbP, TaSb$_2$, LaSb, LaBi, ZrSiS and MoTe$_2$. The model is…

Strongly Correlated Electrons · Physics 2023-06-13 George Kastrinakis

We present a machine-learning guided approach to predict saturation magnetization (MS) and coercivity (HC) in Fe-rich soft magnetic alloys, particularly Fe-Si-B systems. ML models trained on experimental data reveals that increasing Si and…

Electron-hole (e-h) compensation is a hallmark of multi-band semimetals with extremely large magnetoresistance (XMR) and has been considered to be the basis for XMR. Recent spectroscopic experiments, however, reveal that YSb with…

Materials Science · Physics 2017-09-13 J. Xu , N. J. Ghimire , J. S. Jiang , Z. L. Xiao , A. S. Botana , Y. L. Wang , Y. Hao , J. E. Pearson , W. K. Kwok

We present several models of the magnetic structure of solar coronal mass ejections (CMEs). First, we model CMEs as expanding force-free magnetic structures. While keeping the internal magnetic field structure of the stationary solutions,…

Solar and Stellar Astrophysics · Physics 2012-10-04 Maxim Lyutikov , Konstantinos Nektarios Gourgouliatos

We carry out a comprehensive analysis of the behavior of the magnetorotational instability (MRI) in viscous, resistive plasmas. We find exact, non-linear solutions of the non-ideal magnetohydrodynamic (MHD) equations describing the local…

Astrophysics · Physics 2009-11-13 Martin E. Pessah , Chi-kwan Chan

We propose a novel variationally consistent membrane wrinkling model for analyzing the mechanical responses of wrinkled thin membranes. The elastic strain energy density is split into tensile and compressive terms via a spectral…

Numerical Analysis · Mathematics 2024-09-23 Daobo Zhang , Josef Kiendl

The rapidly expanding class of quantum materials known as {\emph{topological semimetals}} (TSM) display unique transport properties, including a striking dependence of resistivity on applied magnetic field, that are of great interest for…

Strongly Correlated Electrons · Physics 2018-11-05 Ian A. Leahy , Yu-Ping Lin , Peter E. Siegfried , Andrew C. Treglia , Justin C. W. Song , Rahul M. Nandkishore , Minhyea Lee

Highly-anisotropic in-plane magneto-resistance (MR) in graphite (HOPG) samples has been recently observed (Y. Kopelevich et al., arXiv:1202.5642) which is negative and linear in low fields in some current direction while it is giant,…

Mesoscale and Nanoscale Physics · Physics 2012-08-15 A. S. Alexandrov , V. A. Dediu , V. V. Kabanov , R. R. da Silva , Y. Kopelevich

Further development of the graphene field-effect transistors (GFETs) for high-frequency electronics requires accurate evaluation and study of the mobility of charge carriers in a specific device. Here, we demonstrate that the mobility in…

Magnetic elastomers are appealing materials from an application point of view: they combine the mechanical softness and deformability of polymeric substances with the addressability by external magnetic fields. In this way, mechanical…

Soft Condensed Matter · Physics 2015-06-22 Elshad Allahyarov , Andreas M. Menzel , Lei Zhu , Hartmut Löwen

A theory of mechanical behaviour of the magneto-sensitive elastomers is developed in the framework of a linear elasticity approach. Using a regular rectangular lattice model, different spatial distributions of magnetic particles within a…

Soft Condensed Matter · Physics 2011-07-15 D. Ivaneyko , V. Toshchevikov , M. Saphiannikova , G. Heinrich

We report measurements of the in-plane and interlayer magnetoresistances of FeSe. The in-plane magnetoresistance $\Delta \rho_{ab}/\rho_{ab}(0)$ for $B \parallel c$ is positive below $T_s$ and increases with decreasing temperature,…

Superconductivity · Physics 2025-10-09 Taichi Terashima , Shinya Uji , Hiroaki Ikeda , Yuji Matsuda , Takasada Shibauchi , Shigeru Kasahara

We have studied the magnetic excitations in Ca$_{2-x}$Sr$_x$RuO$_4$, x=0.52 and 0.62, which exhibit an anomalous high susceptibility and heavy mass Fermi liquid behavior. Our inelastic neutron scattering experiments reveal strongly enhanced…

Strongly Correlated Electrons · Physics 2016-08-31 O. Friedt , P. Steffens , M. Braden , Y. Sidis , S. Nakatsuji , Y. Maeno

Context. A proper estimate of the chromospheric magnetic fields is believed to improve modelling of both active region and coronal mass ejection evolution. Aims. We investigate the similarity between the chromospheric magnetic field…

In \cite{ChCa}, Califano and Chiuderi conjectured that the energy of incompressible Magnetic hydrodynamical system is dissipated at a rate that is independent of the ohmic resistivity. The goal of this paper is to mathematically justify…

Analysis of PDEs · Mathematics 2018-07-04 Wen Deng , Ping Zhang

We develop the phenomenological theory for uniaxial ferromagnets, and derive explicit formulae for their magnetostriction (MS) and magnetic anisotropy energy (MAE) generated by the magnetoelastic (ME) effects. An analysis of the…

Materials Science · Physics 2024-10-29 Jun-ichiro Inoue , Hiroki Tsuchiura

We have carried out measurements of the magnetoresistance MR(H) in the CPP (Current Perpendicular to the Plane) mode for two types of magnetic multilayers which have different layer ordering. The series resistor model predicts that CPP…

Condensed Matter · Physics 2007-05-23 Didier Bozec , M. A. Howson , B. J. Hickey , Smadar Shatz , Nathan Wiser
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