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Tetragonally distorted \(\rm{Mn}_{3-x}\rm{Ga}_x\) thin films with \(0.1< x < 2\) show a strong perpendicular magnetic anisotropy and low magnetization and thus have the potential to serve as electrodes in spin transfer torque magnetic…

We report an insulator-metal-insulator transition in films of five metal phthalocyanines (MPc) doped with alkali atoms. Electrical conduction measurements demonstrate that increasing the alkali concentration results in the formation of a…

其他凝聚态物理 · 物理学 2007-05-23 M. F. Craciun , S. Rogge , M. J. L. den Boer , S. Margadonna , K. Prassides , Y. Iwasa , A. F. Morpurgo

The magnetocaloric effect (MCE) in many rare earth (RE) based intermetallic compounds has been extensively investigated during last two decades, not only due to their potential applications for magnetic refrigeration but also for better…

材料科学 · 物理学 2016-01-18 Lingwei Li

Interaction between a Bloch wall in a ferrite-garnet film and a vortex in a superconductor is analyzed in the London approximation. Equilibrium distribution of vortices formed around the Bloch wall is calculated. The results agree…

Here we show results of first-principles investigations aiming at tuning and controlling the catalytic activity of gold nanoclusters through the design of the underlying support. We show that gold clusters adsorbed on a very thin (2 layers)…

材料科学 · 物理学 2011-02-16 Chun Zhang , Bokwon Yoon , Uzi Landman

We find that dipolar interactions favor ferromagnetic ordering of elongated crystals of Mn12 Acetate below 0.8 K. Ordered crystals must possess domain walls. Motion of the wall corresponds to a moving front of Landau-Zener transitions…

统计力学 · 物理学 2009-11-13 D. A. Garanin , E. M. Chudnovsky

The results of computer simulation of particle motion over the plane with randomly distributed scatters are presented. They are used to analyse the influence of scattering anisotropy on the negative magnetoresistance due to weak…

凝聚态物理 · 物理学 2007-05-23 A. V. Germanenko , V. A. Larionova , G. M. Minkov , S. A. Negashev

The prediction of ultra-low magnetic damping in Co 2 MnZ Heusler half-metal thin-film magnets is explored in this study and the damping response is shown to be linked to the underlying electronic properties. By substituting the Z elements…

Magnetic domain walls in thin films can be well analyzed using polarized neutron reflectometry. Well defined streaks in the off-specular spin-flip scattering maps are explained by neutron refraction at perpendicular N\'{e}el walls. The…

材料科学 · 物理学 2007-05-23 F. Radu , V. Leiner , K. Westerholt , H. Zabel , J. McCord , A. Vorobiev , J. Major , D. Jullien , H. Humblot , F. Tasset

The magnetic and transport properties of the metal phthalocyanine (MPc) and F$_{16}$MPc (M = Sc, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn and Ag) families of molecules in contact with S-Au wires are investigated by density functional theory within…

介观与纳米尺度物理 · 物理学 2016-01-14 M. M. Fadlallah , U. Eckern , A. H. Romero , U. Schwingenschlögl

The electronic polarization energies, P = (P+) + (P-), of a PTCDA (perylenetetracarboxylic acid dianhydride) cation and anion in a crystalline thin film on a metallic substrate are computed and compared with measurements of the PTCDA…

凝聚态物理 · 物理学 2009-11-07 E. V. Tsiper , Z. G. Soos , W. Gao , A. Kahn

The influence of a patterned substrate on obliquely deposited, exchange biased Co/CoO films was studied. It was found that substrates decorated with nanoparticle patterns provide the option to manipulate the orientation of the magnetic easy…

Spray deposition and inkjet printing of various nanostructures are emerging complementary methods for creating conductive coatings on different substrates. In comparison to established deposition techniques like vacuum metal coating and…

We demonstrate the crucial role of small-angle scattering in transverse magnetic focusing (TMF) in ballistic GaAs/AlGaAs heterostructures. Measurements in various samples show that the role significantly depends on their geometry. We…

We determine the structure and melting behavior of supported metallic clusters using an ab initio density-functional-based treatment of intracluster interactions and an approximate treatment of the surface as an idealized smooth plane…

介观与纳米尺度物理 · 物理学 2012-10-02 S. A. Blundell , Soumyajyoti Haldar , D. G. Kanhere

A systematic study the magnetization in La0.8.MnO3 films of thickness varying from ultra-thin to bulk-like has been conducted. The study reveals suppression of the bulk magnetization for films up to at least 1600 A. In addition, the surface…

强关联电子 · 物理学 2007-10-23 M. A. DeLeon , T. A. Tyson , C. Dubourdieu , A. Bossak , J. Dvorak , G. Bonfait

Low-frequency Raman scattering experiments have been performed on thin films consisting of nickel-silver composite nanoparticles embedded in alumina matrix. It is observed that the Raman scattering by the quadrupolar modes, strongly…

凝聚态物理 · 物理学 2007-05-23 H. Portales , L. Saviot , E. Duval , M. Gaudry , E. Cottancin , M. Pellarin , J. Lerme , M. Broyer

We have performed magnetic susceptibility and neutron scattering measurements on polycrystalline Ag-In-RE (RE: rare-earth) 1/1 approximants. In the magnetic susceptibility measurements, for most of the RE elements, inverse susceptibility…

材料科学 · 物理学 2014-01-09 Soshi Ibuka , Kazuki Iida , Taku J Sato

Rare-earth iron garnet (RE3Fe5O12) films are promising insulating ferrimagnets. They can show low magnetic damping, perpendicular magnetic anisotropy, and ultrafast spin dynamics, which makes them ideal for spin transport applications. In…

Simultaneous manipulation of charge and spin density distributions in materials is the key element required in spintronics applications. Here we study the formation of coupled spin and charge densities arising in scattering of electrons by…

介观与纳米尺度物理 · 物理学 2023-06-21 S. Wolski , V. K. Dugaev , E. Ya. Sherman