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The μd energetic atoms are produced by injection of fast muons into a solid hydrogen target of H
2, which contains a small amount of deuterium. A solid layer of D
2 has been frozen on H
2 for ion implantation. The target has been kept at low temperature ∼3 K. Once ions are implanted into...
We study the tunneling of Dirac fermions in graphene through a double barrier potential. This is allowing the carriers to have an effective mass inside the barrier as generated by a lattice miss-match with the boron nitride substrate. The consequences of this gap opening on the transmission are...
Magnetic levitation forces of bulk high temperature superconductor (HTS) above two types permanent magnet railway (PMR) is simulated using finite element method (FEM). The models are formulated by H-formulation and resolving codes is developed using Finite Element Program Generator (FEPG). The...
Dense Bose superfluids, as HeII, differ from dilute ones by the existence of a roton minimum in their excitation spectrum. It is known that this roton minimum is qualitatively responsible for density oscillations close to any singularity, such as vortex cores, or close to solid boundaries. We...
Local atomic and electronic structure with magnetic properties, especially Griffiths phase, of polycrystalline samples La0.7Ca0.3Mn1−x
O3 (x=0, 0.03, 0.06, 0.1) have been studied. The X-ray absorption spectra (XAS) of Cu 2p core level prove that the valence state of Cu ions exhibits...
The analytical expressions for the zero-temperature sound velocity and low-energy eigenfrequencies of a disk-shaped harmonically trapped three-dimensional superfluid Fermi gas are derived on the basis of the hydrodynamic theory in the regimes along the Bardeen-Cooper-Schrieffer (BCS) to...
We apply the general procedure presented by Jarzynski (C.R. Phys. 8:495, 2007) to the problem of dissipation in a voltage-driven single-electron box. We obtain the expression of dissipated work, and find its relation to the dissipation Q obtained in Averin and Pekola (Europhys. Lett. 96:67004,...
Within the harmonic approximation and adiabatic approximation, the expressions of atomic force constants have been derived. Phonon dispersion curves along four major symmetry directions and four off-symmetry directions have been simulated for alkaline-earth metals Ca, Sr and the rare-earth metal...
We present thermodynamic models for a mixing chamber used in dilution refrigerators designed for gravity-independent operation. We develop models for calculating the cooling power of such a dilution refrigerator as a function of the load temperature. We compare our models with experimental...
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