optical latticesultracold atomsenergy bandsLandau levelsWe investigate the spectrum and eigenstates of ultracold fermionic atoms in the bilayer honeycomb optical lattice. In the low energy approximation, the dispersion relation has parabolic form and the quasiparticles are chiral. In the presence of the ...
Khan, M.A. et al., " Energy Band/Lattice Mismatch Engineering in Quaternary AlInGaN/GaN Heterostructure ", Physica Status Solidi(a), vol. 176, No. 1, 1999, pp. 227-230.Asif Khan M, Yang J W, Simin G, et al. Energy band/lattice mismatch engineering in quaternary AlInGaN/GaN ...
SemiconductorConductivity typeOptical band gap energy/eV Sin, p1.11 GaAsn, p1.42 GaPn, p2.26 InPn, p1.35 CdSn2.42 CdSen1.70 CdTen, p1.50 TiO2(rutile)n3.00 TiO2(anatase)n3.20 ZnOn3.35 There are two types of bandgaps: direct and indirect bandgaps. The bandgap is called direct if the mo...
energy band structurechalcopyrite single crystalsfundamental absorption edgeThe electroreflectance spectra of CdSnP2 chalcopyrite single crystals have been investigated in the spectral region 1.0 to 4.7 eV at room temperature using polarized light. The electroreflectance structure in the region of the ...
At room temperatures, the resulting uncertainties in the E1 BBR shifts are large and substantially affect the projected 10{sup -18} fractional accuracy of the optical-lattice-based clocks. A peculiarity of these clocks is that the characteristic BBR wavelength is comparable to the {sup 3}P fine...
perovskitesA mechanism for bilinear interaction between high-frequency light-induced electronic polarization and low-frequency soft lattice polarization is proposed... W Jia,VS Vikhnin,H Liu,... - 《Journal of Luminescence》 被引量: 32发表: 1999年 Band gap engineering strategy via polarization rotat...
(N=3\)) empty-lattice approximation showing the band gap at first Brillouin zone boundary,\(k=G/2\). (c) Variations of\(\Delta E_0\)and\(\Delta E_{d}\)in terms of the reciprocal lattice vector,\(G=2\pi /a\), where,ais the lattice constant. (d) Variations of\(\Delta E_...
We use the frustrated XY model approximation of BEC in a rotating optical lattice and formulate the problem of the ground state in terms of eigenvectors and eigenvalues of frustrated adjacency matrix (coupling matrix). By using this formulation, we show that there is a lower bound for ground ...
At room temperatures, the resulting uncertainties in the E1 BBR shifts are large and substantially affect the projected 10{sup -18} fractional accuracy of the optical-lattice-based clocks. A peculiarity of these clocks is that the characteristic BBR wavelength is comparable to the {sup 3}P fine...
Using lattice-driven gating, a copper-based zeolitic imidazolate framework (Cu-ZIF-gis) with ultra-narrow 2.4 Å channels demonstrates efficient hydrogen isotope separation at high temperatures (above 120 K). This innovation leverages temperature-induced aperture adjustments to achieve sustainable an...