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Tc is insensitive to magnetic interactions in high-Tc superconductors
Tc insensitive magnetic interactions high-Tc superconductors
2012/2/27
A quarter of a century after their discovery the mechanism that pairs carriers in the cuprate high-Tc superconductors (HTS) still remains uncertain. Despite this the general consensus is that it is pr...
Effects of s,p - d and s - p exchange interactions probed by exciton magnetospectroscopy in (Ga,Mn)N
exchange interactions exciton magnetospectroscopy
2010/11/25
Near band-gap photoluminescence and reflectivity in magnetic field are employed to determine the exchange-induced splitting of free exciton states in paramagnetic wurtzite Ga1−xMnxN, x . 1%,grow...
Critical behavior of ferromagnetic pure and random diluted nanoparticles with competing interactions: variational and Monte Carlo approaches
Critical behavior of ferromagnetic pure random diluted nanoparticles interactions: variational
2010/11/23
The magnetic properties and critical behavior of both ferromagnetic pure and metallic nanopar-
ticles having concurrently atomic disorder, dilution and competing interactions, are studied in the fram...
Observation of exchange Coulomb interactions in the quantum Hall state at nu=3
exchange Coulomb interactions quantum Hall state
2010/11/19
Coulomb exchange interactions of electrons in the = 3 quantum Hall state are determined from
two inter-Landau level spin-flip excitations measured by resonant inelastic light scattering. The two co...
Ab initio prediction of ferrimagnetism, exchange interactions and Curie temperatures in Mn2TiZ Heusler compounds
initio prediction of ferrimagnetism Curie temperatures
2010/11/19
The Heusler compounds Mn2TiZ (Z = Al, Ga, In, Si, Ge, Sn, P, As,Sb) are of large interest due to their potential ferrimagnetic properties and high spin polarization. Here, we present calculations of t...
The non-retarded Casimir interaction (van der Waals interaction) between two free standing
graphene sheets as well as between a graphene sheet and a substrate is determined. An exact
analytical expr...
Competing magnetic interactions in CeNi9-xCoxGe4
Competing magnetic interactions CeNi9-xCoxGe4
2010/11/25
CeNi9Ge4 exhibits outstanding heavy fermion features with remarkable non-Fermiliquid behavior which is mainly driven by single-ion effects. The substitution of Ni by Cu causes a reduction of both, the...
5. Competing Interactions and Suppression of Ferromagnetism on La site Substitution in La0.65A0.35Mn0.95Fe0.05O3 Compounds
Competing Interactions Suppression of Ferromagnetism
2010/11/19
We have studied the effect of metastable, irreversibility induced by repeated thermal cycles on the electric transport and magnetization of polycrystalline samples of La1-xCaxMnO3 (0.48≤x≤0.55) close ...
First-principles modeling of the interactions of iron impurities with graphene and graphite
First-principles modeling of the interactions graphene graphite
2010/11/19
Results of first principles modelling of interactions graphene and graphite with iron
impurities predict the colossal difference between these two carbon allotropes. Insertion
of the iron atoms betw...
Interactions between sub-10 nm iron and cerium oxide nanoparticles and 3T3 fibroblasts : the role of the coating and aggregation state
Nanoparticle Magnetism Cell proliferation Cell viability Fibroblast Polyacrylic acid
2010/11/19
Recent nanotoxicity studies revealed that the physico-chemical characteristics of engineered nanomaterials play an important role in the interactions with living cells. Here, we report on the toxicity...
Continuous atom laser with Bose-Einstein condensates involving three-body interactions
atom laser Bose-Einstein condensates three-body interactions
2010/4/2
We demonstrate, through numerical simulations, the emission of a coherent continuous matter wave of constant amplitude from a Bose-Einstein Condensate in a shallow optical dipole trap. The process is ...
Resonance induced by repulsive interactions in a model of globally-coupled bistable systems
Resonance induced globally-coupled bistable systems repulsive interactions
2010/4/1
We show the existence of a competition-induced resonance effect for a generic globally coupled bistable system. In particular, we demonstrate that the response of the macroscopic variable to an extern...