Ab initioGreen’s function formalism for band structures
نویسندگان
چکیده
منابع مشابه
Influence of optical Kerr coefficient on photonic band structures of hexagonal-lattice function photonic crystals
In this paper, we have studied the photonic band structure of function photonic crystals in which the dielectric constant of the scattering centers (rods) is a function of space coordinates. The under-studied lattice is hexagonal and cross section of rods has a circular symmetry embedded in the air background. Photonic band structures for both electric and magnetic polarizations of the electrom...
متن کاملAb initio quantum chemistry for protein structures.
Structural properties of over 55 small proteins have been determined using both density-based and wave-function-based electronic structure methods in order to assess the ability of ab initio "force fields" to retain the properties described by experimental structures measured with crystallography or nuclear magnetic resonance. The efficiency of the GPU-based quantum chemistry algorithms impleme...
متن کاملExtended Ginzburg-Landau formalism for two-band superconductors.
Recent observation of unusual vortex patterns in MgB(2) single crystals raised speculations about possible "type-1.5" superconductivity in two-band materials, mixing the properties of both type-I and type-II superconductors. However, the strict application of the standard two-band Ginzburg-Landau (GL) theory results in simply proportional order parameters of the two bands-and does not support t...
متن کاملAb initio description of quasiparticle band structures and optical near-edge absorption of transparent conducting oxides
André Schleife and Friedhelm Bechstedt Journal of Materials Research / Volume 27 / Issue 17 / 2012, pp 2180 2189 DOI: 10.1557/jmr.2012.147 Link to this article: http://journals.cambridge.org/abstract_S0884291412001471 How to cite this article: André Schleife and Friedhelm Bechstedt (2012). Ab initio description of quasiparticle band structures and optical near edge absorption of transparent ...
متن کاملGreen’s Function Formalism for Highly Correlated Systems
We present the Composite Operator Method (COM) as a modern approach to the study of strongly correlated electronic systems, based on the equation of motion and Green’s function method. COM uses propagators of composite operators as building blocks at the basis of approximate calculations and algebra constrains to fix the representation of Green’s functions in order to maintain the algebraic and...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review B
سال: 2005
ISSN: 1098-0121,1550-235X
DOI: 10.1103/physrevb.72.195107