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Electron pairing and ferromagnetism in various cluster geometries are studied with emphasis on tetrahedron and square pyramid under variation of interaction strength, electron doping and temperature. These exact calculations of charge and…

强关联电子 · 物理学 2008-04-08 A. N. Kocharian , G. W. Fernando , K. Palandage , J. W. Davenport

The swelling equilibrium of Olympic gels, which are composed of entangled cyclic polymers, is studied by Monte Carlo Simulations. In contrast to chemically crosslinked polymer networks, we observe that Olympic gels made of chains with a…

软凝聚态物质 · 物理学 2021-03-31 Michael Lang , Jakob Fischer , Marco Werner , Jens-Uwe Sommer

The effective response depends sensitively on composite microstructure due to large fluctuations in the local electric field. For metallic clusters embedded in a dielectric host, the local field distributions are extremely inhomogeneous in…

软凝聚态物质 · 物理学 2007-05-23 Ying Gu , K. W. Yu , Hong Sun

We simulate the formation of a large X-ray cluster using a fully 3D hydrodynamical code coupled to a Particle-Mesh scheme which models the dark matter component. We focus on a possible decoupling between electrons and ions temperatures. We…

天体物理学 · 物理学 2009-10-30 Jean-Pierre Chieze , Romain Teyssier , Jean-Michel Alimi

We study spin accumulation in an aluminium island, in which the injection of a spin current and the detection of the spin accumulation are done by means of four cobalt electrodes that connect to the island through transparent tunnel…

介观与纳米尺度物理 · 物理学 2009-11-11 M. V. Costache , M. Zaffalon , B. J. van Wees

The physical and chemical properties of metal nanoparticles differ significantly from those of free metal atoms as well as from the properties of bulk metals, and therefore, they may be viewed as a transition regime between the two physical…

适应与自组织系统 · 物理学 2007-05-23 Horacio G. Rotstein , Amy Novick-Cohen , Rina Tannenbaum

We study the electrophoretic mobility of spherical particles and the electrical conductivity in salt-free concentrated suspensions including finite ion size effects. An ideal salt-free suspension is composed of just charged colloidal…

软凝聚态物质 · 物理学 2017-09-13 Rafael Roa , Félix Carrique , Emilio Ruiz-Reina

We discuss the possibility of equilibrium (and thermalization) in heavy-ion collisions at intermediate energies within a transport model. This was achieved by dividing the nuclear matter into different collision zones. We find that those…

核理论 · 物理学 2007-05-23 Amandeep Sood , Rajeev K. Puri

We compute the electric spin susceptibility of Bloch electrons with spin-orbit coupling to second order. We find that it is possible to generate a nonequilibrium spin polarization in the bulk of non-magnetic inversion-symmetric materials…

介观与纳米尺度物理 · 物理学 2022-11-07 Benjamin M. Fregoso

We investigate the magnetic properties of small transition metal clusters using a simple statistical model, which requires some input data from ab initio spin-density functional calculations. In our study we consider a thermodynamically…

凝聚态物理 · 物理学 2007-05-23 Peter Borrmann , Bernd Diekmann , Eberhard R. Hilf , David Tomanek

Multivalent counterions can induce an effective attraction between like-charged rodlike polyelectrolytes, leading to the formation of polelectrolyte bundles. In this paper, we calculate the equilibrium bundle size using a simple model in…

软凝聚态物质 · 物理学 2009-11-10 Mark L. Henle , Philip A. Pincus

Spin squeezed states provide a seminal example of how the structure of quantum mechanical correlations can be controlled to produce metrologically useful entanglement. Such squeezed states have been demonstrated in a wide variety of…

Electron dynamics in metallic clusters are examined using a time-dependent density functional theory that in-cludes a "memory term", i.e. attempts to describe temporal non-local correlations. Using the Iwamoto, Gross and Kohn…

强关联电子 · 物理学 2007-05-23 Yair Kurzweil , Roi Baer

Controlling electron spins strongly coupled to magnetic and nuclear spins in solid state systems is an important challenege in the field of spintronics and quantum computation. We show here that electron droplets with no net spin in…

介观与纳米尺度物理 · 物理学 2015-06-03 Ramin M. Abolfath , Marek Korkusinski , Thomas Brabec , Pawel Hawrylak

Self-consistent theory of electron localization in disordered systems is generalized for the case of interacting electrons. We propose and critically compare a number of possible self-consistency schemes which take into account the lowest…

凝聚态物理 · 物理学 2008-02-03 E. Z. Kuchinskii , M. V. Sadovskii , V. G. Suvorov

In two recent papers (Phys. Rev. Lett. {\bf 116} (2016) 033201; Phys. Rev. A {\bf 94} (2016) 032331), the possibility of continuously varying the degree of entanglement between an elastically scattered electron and the valence electron of…

原子物理 · 物理学 2017-04-26 K. Bartschat , S. Fonseca dos Santos

We use molecular dynamics simulations to study the melting of gold icosahedral clusters of a few thousand atoms. We pay particular attention to the behavior of surface atoms, and to the equilibrium shape of the cluster. We find that…

材料科学 · 物理学 2009-11-10 Yanting Wang , S. Teitel , Christoph Dellago

The existence of macroscopic shell structure of submicron metal clusters is known for several decades. Since the most studies provide theoretical analysis for clusters of spherical shape, the electron density inhomogeneities caused by shell…

原子与分子团簇 · 物理学 2025-01-16 S. E. Kuratov , I. S. Galtsov , S. A. Dyachkov , S. Yu. Igashov

It is shown that the spin Hall current generates a non-equilibrium spin polarization in the interior of crystals with reduced symmetry in a way that is drastically different from the previously well-known equilibrium polarization during the…

介观与纳米尺度物理 · 物理学 2009-11-11 V. L. Korenev

We study theoretically large metal clusters containing vacancies. We propose an approach, which combines the Kohn-Sham results for monovacancy in a bulk of metal and analytical expansions in small parameters $c_{v}$ (relative concentration…

介观与纳米尺度物理 · 物理学 2018-02-14 V. V. Pogosov , V. I. Reva