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Conventional and inverse magnetocaloric effects in La(0.45)Sr(0.55)MnO(3) nanoparticles
(2011)
The magnetocaloric effect of La(0.45)Sr(0.55)MnO(3) nanoparticles was studied by dc magnetization measurements. A sample with mean particle size of about 140 nm exhibits both a conventional magnetocaloric effect around the ...
Three-state dual spin valve structure
(2010)
A dual spin valve is built with exchange bias on the top and bottom pinned layers and a central free layer. By suitable choice of the antiferromagnetic and ferromagnetic layer thicknesses, it is possible to separate the ...
Transparent conducting films from NbSe(3) nanowires.
(2011)
We have developed methods to disperse and partially size separate NbSe3 nanowires in aqueous
surfactant solutions. These dispersions can easily be formed into thin films. Optical and
electrical studies show these films ...
Population inversion in a single InGaAs quantum dot using the method of adiabatic rapid passage
(2011)
Preparation of a speci c quantum state is a required step for a variety of proposed practical uses of
quantum dynamics. We report an experimental demonstration of optical quantum state preparation
in a semiconductor ...
Spin transport in higher n-acene molecules
(2011)
We investigate the spin-transport properties of molecules belonging to the acenes series by using density functional theory combined with the nonequilibrium Green's function approach to electronic transport. While short ...
Spin-flip inelastic electron tunneling spectroscopy in atomic chains
(2011)
We present a theoretical study of the spin transport properties of monoatomic magnetic chains with a focus on the spectroscopical features of the I - V curve associated with spin-flip processes. Our calculations are based ...
Anomalous magnetization reversal due to proximity effect of antiphase boundaries
(2011)
Here we report anomalous double switching hysteresis loop and high coercivity (~0.1 T) in Fe3O4(110) thin films. Our analytical model based on spin chains confined within small antiphase boundary domains (APBDs) suggests ...
Microcavity quantum-dot systems for non-equilibrium Bose-Einstein condensation
(2010)
We review the practical conditions required to achieve a non-equilibrium BEC
driven by quantum dynamics in a system comprising a microcavity field mode and a distribution
of localised two-level systems driven to a step-like ...
Finite-momentum condensation in a pumped microcavity
(2010)
We calculate the absorption spectra of a semiconductor microcavity into which a nonequilibrium exciton population has been pumped. We predict strong peaks in the spectrum corresponding to collective modes analogous to the ...
Synthesis, electrical and magnetotransport properties of polypyrrole-MWCNT nanocomposite
(2012)
The present work describes the preparation of nanocomposites in which the multiwall carbon nanotubes (MWCNT) have been mixed with conducting polypyrrole (PPy) via an in situ chemical oxidative preparation method. To reveal ...