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Related papers: Photon-Induced Magnetization Changes in Single-Mol…

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We report experimental studies of crystals of Mn12 molecular magnetic clusters in pulsed magnetic fields with sweep rates up to 4x10^3 T/s. The steps in the magnetization curve are observed at fields that are shifted with respect to the…

Other Condensed Matter · Physics 2009-11-10 J. Vanacken , S. Stroobants , M. Malfait , V. V. Moshchalkov , M. Jordi , J. Tejada , R. Amigo , E. M. Chudnovsky , D. A. Garanin

We inject current pulses into uniformly magnetized patterns of thin films of the itinerant ferromagnet SrRuO3, while monitoring the effective temperature of the patterns during the current injection. We gradually increase the amplitude of…

Strongly Correlated Electrons · Physics 2012-08-16 Yishai Shperber , Daniel Bedau , James W. Reiner , Lior Klein

We provide a new bound on the amplitude of primordial magnetic fields (PMFs) by using a novel mechanism, named {\it magnetic reheating}. Before the epoch of recombination, PMFs induce the fluid motions in a photon-baryon plasma through the…

Cosmology and Nongalactic Astrophysics · Physics 2018-01-18 Shohei Saga , Hiroyuki Tashiro , Shuichiro Yokoyama

We present a theoretical approach to study the effect of microwave radiation on the magnetoresistance of a one-dimensional superlattice. In our proposal the magnetoresistance of a unidirectional spatial periodic potential (superlattice), is…

Mesoscale and Nanoscale Physics · Physics 2015-06-24 Jesús Iñarrea , Gloria Platero

The speed of magnetization reversal is a key feature in magnetic data storage. Magnetic fields from intense THz pulses have been recently shown to induce small magnetization dynamics in Cobalt thin film on the sub-picosecond time scale.…

Optics · Physics 2016-02-17 Mostafa Shalaby , Carlo Vicario , Christoph P. Hauri

The dephasing time of electrons in open semiconductor quantum dots, measured using ballistic weak localization, is found to saturate below ~ 100 mK, roughly twice the electron base temperature, independent of dot size. Microwave radiation…

Mesoscale and Nanoscale Physics · Physics 2012-08-27 A. G. Huibers , J. A. Folk , S. R. Patel , C. M. Marcus , C. I. Duruoz , J. S. Harris,

We present a two-current-pulse temporal correlation experiment to study the intrinsic subnanosecond nonequilibrium magnetic dynamics of a nanomagnet during and following a pulse excitation. This method is applied to a model spin-transfer…

Mesoscale and Nanoscale Physics · Physics 2012-06-25 H. Liu , D. Bedau , J. Z. Sun , S. Mangin , E. E. Fullerton , J. A. Katine , A. D. Kent

The photoinduced magnetism in manganese-tetracyanoethylene (Mn-TCNE) molecule-based magnets is ascribed to charge-transfer excitations from manganese to TCNE. Charge-transfer energies are calculated using Density Functional Theory;…

Materials Science · Physics 2015-06-25 Serkan Erdin , Michel van Veenendaal

We study the precessional switching of the magnetization in microscopic spin valve cells induced by ultra short in-plane hard axis magnetic field pulses. Stable and highly efficient switching is monitored following pulses as short as 140 ps…

Electron polarization induced by magnetic fields can modify the potentials relevant for describing neutrino conversions in media with magnetic fields. The magnitudes of polarization potentials are determined for different conditions. We…

High Energy Physics - Phenomenology · Physics 2009-09-17 H. Nunokawa , V. B. Semikoz , A. Yu. Smirnov , J. W. F. Valle

Prior to photon decoupling magnetic random fields of comoving intensity in the nano-Gauss range distort the temperature and the polarization anisotropies of the microwave background, potentially induce a peculiar B-mode power spectrum and…

Cosmology and Nongalactic Astrophysics · Physics 2018-05-04 Massimo Giovannini

The mechanism of rapid and selective heating of magnetic metal oxides under the magnetic field of microwaves which continues beyond the Curie temperature $ T_{c} $ is identified by using the Heisenberg model. Monte Carlo calculations based…

Materials Science · Physics 2009-02-13 Motohiko Tanaka , Hirohiko Kono , Koji Maruyama

The rotating magnetocaloric effect (RMCE) induced by self-demagnetization has been investigated in the giant magnetocaloric effect (GMCE) material Gd$_5$Si$_2$Ge$_2$. This shape-dependent effect had thus far only been reported in pure Gd,…

When high-frequency radiation is incident upon graphene subjected to a perpendicular magnetic field, graphene absorbs incident photons by allowing transitions between nearest LLs that follow strict selection rules dictated by angular…

We investigate the magnetization dynamics of ferromagnetic nanoparticles in the atomistic approach taking account of surface anisotropy and the spin misalignment it causes. We demonstrate that such inhomogeneous spin configurations induce…

Mesoscale and Nanoscale Physics · Physics 2018-11-12 Roland Bastardis , Francois Vernay , Hamid Kachkachi

We experimentally demonstrate single-spin magnetometry with multi-pulse sensing sequences. The use of multi-pulse sequences can greatly increase the sensing time per measurement shot, resulting in enhanced ac magnetic field sensitivity. We…

Mesoscale and Nanoscale Physics · Physics 2011-03-16 G. de Lange , D. Ristè , V. V. Dobrovitski , R. Hanson

The interplay between magnetic field and microwave applied in a single-electron transistor(SET) has a profound influence on the Kondo effect, as shown in a recent experiment[B. Hemingway, S. Herbert, M. Melloch and A. Kogan,…

Strongly Correlated Electrons · Physics 2013-06-26 Zhan Cao , Chen Cheng , Fu-Zhou Chen , Hong-Gang Luo

We utilize simulations of electron scattering by a chain of dynamical quantum spins, to analyze the interplay between the spin transfer effect and the magnetization dynamics. We show that the complex interactions between the spin-polarized…

Materials Science · Physics 2021-04-21 Neil Tramsen , Alexander Mitrofanov , Sergei Urazhdin

We discuss possible origins of recently discovered microwave induced photoresistance oscillations in very-high-electron-mobility two-dimensional electron systems. We show that electrodynamic effects -- the radiative decay, plasma…

Mesoscale and Nanoscale Physics · Physics 2009-11-10 S. A. Mikhailov

We provide an article-extract which points out that a microwave-induced modification in the resistance occurs at relatively "high" magnetic fields where the radiation is incapable of producing inter-Landau level excitations and, therefore,…

Mesoscale and Nanoscale Physics · Physics 2007-05-23 R. G. Mani