1 - 10 of 12 articles
Within the frame of the Huang–Rhys’s lattice relaxation model, we theoretically investigate the spin–flip relaxation assisted by two-phonon processes between the zeroth and first-excited Landau level in gapped graphene on different polar substrates. We give the comparisons between the...
We report on the design, fabrication, and demonstration of the operation of a latching (nonvolatile) low-loss microwave switch at 4.2 K and 40 mK using the phase-change material germanium telluride (GeTe) as the switching element. The single-pole double-throw (SPDT) series–shunt switch has a...
We study the spin Seebeck effect in a circularly connected triple quantum dot (TQD) structure taking the spin-dependent interdot coupling and magnetic flux into consideration. Particular attention is paid on the generation and manipulation of the 100% spin-polarized and pure spin thermopowers,...
We have measured the low-temperature shear piezoelectric and dielectric constants of single-crystal lithium niobate (
) and lead magnesium niobate–lead titanate (PMN-PT), and of ceramic lead zirconium titanate (PZT-5A) transducers between room temperature and...
We have considered the AB-stacked bilayer graphene tunnel junction construction. The bilayers are supposed to be in the charge equilibrium states and at the half-filling in each of the electronic layers of the construction and at each value of the external gate potential. By considering the...
We investigate the formation of Shannon information entropy in a rotating Bose–Einstein condensates confined in a harmonic potential combined with an optical lattice (OL) using the mean field Gross–Pitaevskii equation. With the increase of OL depth
, at the same rotational...
Since the very first experimental realization of a Josephson flux-flow oscillator (FFO), its theoretical description has been limited by the phenomenological perturbed sine-Gordon equation (PSGE). While PSGE can qualitatively describe the topological excitations in Josephson junctions that are...
The single-band negative-U Hubbard model is applied to investigate ultracold Fermi atoms loaded into square and triangular optical lattices subjected to an effective non-Abelian gauge field and an out-of-plane Zeeman field. The mean-field approximation along with the generalized random phase...
Using the variational method of the Pekar type, we investigate the first excited state energy of the polaron in an asymmetric quantum pseudodot under the magnetic field. Temperature effects on the polaron are calculated by employing the quantum statistical theory, and the influences of the...
We revisit the problem of the calculation of zero-temperature properties for the dilute two-dimensional Bose gas. By using Popov’s hydrodynamic approach and perturbation theory on the two-loop level, we recover not only the known expansion for the ground-state energy but also calculate for the...
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