We study, within the Hartree approximation, the effects of the electronelectron interaction on the energy spectrum of a two-dimensional electron gas in a perpendicular homogeneous magnetic field and a lateral superlattice potential with square symmetry. Due to the strong screening effects, the bandwidth of the Landau bands oscillates strongly with their filling. For short enough periods and str...

geothermal energy serves as a renewable and clean energy. thanks to its great advantages such as relatively harmless, low costs and environmental friendly, it may be a good substitute for fossil fuels. in the present study, a geothermal survey is conducted in an area prone geothermal ferdows of south khorasan province in eastern iran using etm+ data landsat 7 geo-referenced to topography map in...

Submitted for the MAR11 Meeting of The American Physical Society Dirac Point Degenerate with Massive Bands at a Topological Quantum Critical Point SWAPNONIL BANERJEE, UC Davis, WARREN PICKETT, JUSTIN SMITH, VICTOR PARDO, RAJIV SINGH TEAM — In the band structure of the Skutterudite, as the Sb sublattice in the unit cell is moved slightly retaining the crystal symmetry, the small gap at the Fermi...

With a direct demodulation method, we have reanalyzed the data from the COMPTEL observation of PKS0528+134 during the 1993 March flare in γ-rays. Our results show that during the flare γ-rays were detected at a level approximately 2.4-3.8 times higher than the observed intensity in two earlier COMPTEL observations VP 0 and VP 1 in the energy range 3 MeV to 30 MeV. The 3-30 MeV time variability ...

With a direct demodulation method, we have reanalyzed the data from the COMPTEL observation of PKS0528+134 during the 1993 March flare in γ-rays. Our results show that during the flare γ-rays were detected at a level approximately 2.4-3.8 times higher than the observed intensity in two earlier COMPTEL observations VP 0 and VP 1 in the energy range 3 MeV to 30 MeV. The 3-30 MeV time variability ...

We report total-energy electronic-structure calculations based on the density-functional theory that provide stable adsorption sites, structural characteristics, and energy bands of carbon nanotubes (CNTs) adsorbed on the Si(001) stepped surfaces. We choose (5,5), (9,9), and (13,13) armchair CNTs with the diameters of 6.8 Å, 12.2 Å, and 17.6 Å, respectively, as representatives of CNTs and explo...

The first vacuum ultraviolet absorption spectrum of a 1,2,4-triazole has been obtained and analyzed in detail, with assistance from both an enhanced UV photoelectron spectroscopic study and ab initio multi-reference multi-root configuration interaction procedures. For both 1H- and 1-methyl-1,2,4-triazoles, the first ionization energy bands show complex vibrational structure on the low-energy ed...