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Using direct numerical simulations of three-dimensional magnetohydrodynamic (MHD) turbulence the spatio-temporal behavior of magnetic field fluctuations is analyzed. Cases with relatively small, medium and large values of a mean background…

等离子体物理 · 物理学 2016-12-21 R. Lugones , P. Dmitruk , P. D. Mininni , M. Wan , W. H. Matthaeus

By means of magneto-optical Kerr effect we observe spin reorientations from in-plane to out-of-plane and vice versa upon annealing thin Fe films on Ag(001) at increasing temperatures. Scanning tunneling microscopy images of the different Fe…

材料科学 · 物理学 2009-10-31 D. M. Schaller , D. E. Buergler , C. M. Schmidt , F. Meisinger , H. -J. Guentherodt

The static transverse and longitudinal correlation functions (CF) of a 3-dimensional ferromagnet are calculated for the exactly solvable anisotropic spherical model (ASM) determined as the limit D \to \infty of the classical D-component…

统计力学 · 物理学 2015-06-25 D. A. Garanin

We report on our theoretical study of the magnetoresistance in spin polarized transport through a finite carbon nanotube (CNT). Varying the Fermi energy of a CNT and the relative strength of couplings to two ferromagnetic (FM) electrodes,…

材料科学 · 物理学 2008-11-03 Tae-Suk Kim , Choong-Ki Lee , Hyun-Woo Lee , B. C. Lee , K. Rhie

The concept of a common modulated oscillation spanning multiple time series is formalized, a method for the recovery of such a signal from potentially noisy observations is proposed, and the time-varying bias properties of the recovery…

统计方法学 · 统计学 2015-05-27 Jonathan M. Lilly , Sofia C. Olhede

Despite spin (SAM) and orbital (OAM) angular momentum dynamics are well-studied in demagnetization processes, their components receive less focus. Here, we utilize the non-collinear spin version of real-time time-dependent density…

介观与纳米尺度物理 · 物理学 2024-02-28 Junjie He , Shuo Li , Thomas Fruenheim

Electron beam induced deposition of amorphous carbon finds several uses in microlithography, surface micromachining, and the manufacturing of micro- and nanomechanical devices. This process also occurs unintentionally in vacuum chambers of…

材料科学 · 物理学 2011-05-06 S. Zaitsev , O. Shtempluck , E. Buks

Damped transverse oscillations of magnetic loops are routinely observed in the solar corona. This phenomenon is interpreted as standing kink magnetohydrodynamic waves, which are damped by resonant absorption owing to plasma inhomogeneity…

太阳与恒星天体物理 · 物理学 2015-10-28 Roberto Soler , Manuel Luna

Magnetic clock transitions (CTs), defined by vanishing first-order sensitivity of the transition frequency to magnetic field fluctuations, provide a powerful route to suppress decoherence in donor spin systems. Here, we present the…

In this Letter we establish clear evidence for the resonant absorption damping mechanism by analyzing observational data from the novel Coronal Multi-Channel Polarimeter (CoMP). This instrument has established that in the solar corona there…

太阳与恒星天体物理 · 物理学 2015-05-19 G. Verth , M. Goossens , J. Terradas

In this article we study the influence of magnetic fields on the axial gravitational waves emitted during the collapse of a homogeneous dust sphere. We found that while the energy emitted depends weakly on the initial matter perturbations…

广义相对论与量子宇宙学 · 物理学 2008-11-26 Hajime Sotani , Shijun Yoshida , Kostas D. Kokkotas

Surface curvature of magnetic systems can lead to many static and dynamic effects which are not present in flat systems of the same material. These emergent magnetochiral effects can lead to frequency nonreciprocity of spin waves, which has…

介观与纳米尺度物理 · 物理学 2022-07-20 Lukas Körber , Roman Verba , Jorge A. Otálora , Volodymyr Kravchuk , Jürgen Lindner , Jürgen Fassbender , Attila Kákay

An anomalous (inverse) spin accumulation in the nonmagnetic spacer may build up when the spin valve consists of magnetic films having different spin symmetries. This leads to wavy-like dependence of spin-transfer torque on the angle between…

介观与纳米尺度物理 · 物理学 2010-04-12 E. Jaromirska , P. Balaz , L. Lopez Diaz , J. Barnas

The sensitivity of mechanical resonators to physical quantities such as acceleration, pressure, mass and temperature enables them to underpin sensing and metrology applications. Here, we observe that the resonance frequency of a…

应用物理 · 物理学 2025-09-15 Toji Thomas , Kevin F. MacDonald , Eric Plum

We examined the output of a quantum Michelson interferometer incorporating the combined effects of nonlinear optomechanical interaction and time-varying gravitational fields. Our findings indicate a deviation from the standard relationship…

广义相对论与量子宇宙学 · 物理学 2024-08-08 Zhong-Kai Guo , Xiao-Yong Wang

We investigate the origin of the experimentally observed varying current-frequency nonlinearity of the propagating spin wave mode in nano-contact spin torque oscillators. Nominally identical devices with 100 nm diameter are characterized by…

介观与纳米尺度物理 · 物理学 2021-06-30 Anders J. Eklund , Mykola Dvornik , Fatjon Qejvanaj , Sheng Jiang , Sunjae Chung , Johan Åkerman , B. Gunnar Malm

Coherent spin resonance techniques, such as nuclear and electron spin resonance spectroscopy, have revolutionized non-invasive imaging by providing spectrally resolved information about spin dynamics. Motivated by the recent emergence of…

量子物理 · 物理学 2026-02-25 Santiago Beltrán-Romero , Stefan Löffler , Dennis Rätzel , Philipp Haslinger

We present a theoretical model to sufficiently investigate the optical rotational Doppler effect based on modal expansion method. We find that the frequency shift content is only determined by the surface of spinning object and the reduced…

光学 · 物理学 2016-08-02 Hailong Zhou , Dongzhi Fu , Jianji Dong , Pei Zhang , Xinliang Zhang

We derive the contributions of spin-orbit and spin-spin coupling to the gravitational radiation from coalescing binary systems of spinning compact objects. We calculate spin effects in the symmetric, trace-free radiative multipoles that…

广义相对论与量子宇宙学 · 物理学 2010-01-06 Lawrence E. Kidder , Clifford M. Will , Alan G. Wiseman

A classic application of coronal seismology uses transverse oscillations of waveguides to obtain estimates of the magnetic field strength. The procedure requires information on the density of the structures. Often, it ignores the damping of…

太阳与恒星天体物理 · 物理学 2019-05-08 I. Arregui , M. Montes-Solis , A. Asensio Ramos
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