Books

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https://hdl.handle.net/20.500.14170/1290

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Browsing Books by Author "Ali Hussain Reshak"
  • Publication
    A quantum approach to condensed matter physics
    ( 2015)
    Ali Hussain Reshak
    This book will give the reader an idea about the utilization of the Density Functional Theory (DFT) for solving complex systems. The band structure problem is a many-body problem corresponding to the motion of the enormous number of electrons and of nuclear particles in the crystal. DFT is an extremely successful approach for the description of the ground state properties of metals, semiconductors, and insulators. The main idea of DFT is to describe an interacting system of fermions via its density and not via its many-body wave function.
      18  194
  • Publication
    Borate crystals
    ( 2015)
    Ali Hussain Reshak
    Among the various categories of materials, optical materials and the devices based on them play an important role which is increasing every year with the advent of modern photonic technologies and their implementation in everyday life. These materials can be used for converters of electromagnetic radiation, for the design and production of light-emitting diodes operating in the ultraviolet, for more sensitive detectors of ultraviolet radiation and other ionizing radiations as well as for various chemical sensors. This book will give the reader an idea about the utilization of the Density Functional Theory (DFT) for solving complex systems. With the aid of Density Functional Theory (DFT), the many-electron problem can be reduced to a problem with one electron moving in an effective crystal potential.
      11  74
  • Publication
    Condensed matter physics
    ( 2015)
    Ali Hussain Reshak
    This book will give the reader an idea about the utilization of the Density Functional Theory (DFT) for solving complex systems. The band structure problem is a many-body problem corresponding to the motion of the enormous number of electrons and of nuclear particles in the crystal. The study of crystals, their structures, and their properties has antecedents predating modern science. With the aid of Density Functional Theory (DFT), the many-electron problem can be reduced to a problem with one electron moving in an effective crystal potential. DFT is an extremely successful approach for the description of the ground state properties of metals, semiconductors, and insulators. The success of DFT not only encompasses standard bulk materials but also complex materials such as proteins and carbon nanotubes.
      1  157
  • Publication
    Crystals structure : linear and nonlinear optical susceptibilities
    ( 2013)
    Ali Hussain Reshak
    In recent years, nonlinear optics has developed into a field of major study because of rapid advances in laser technology. Nonlinear optical techniques have been applied to many diverse disciplines such as atomic, molecular, solid-state physics, materials science, chemical dynamics, surface interface sciences, biophysics, and medicine. The development of new advanced nonlinear optical materials for special applications is of crucial importance in technical areas such as optoelectronics, acoustic-optic conversions, optical signal processing, optical computing, and neuro-network implementation.
      38  48
  • Publication
    Density Functional Theory : A Powerful Tool for Solving the Many Body Problem
    (UniMAP Press, 2014)
    Ali Hussain Reshak
    The purpose of this book is to give an idea about using the Density Functional Theory (DFT) for solving the many body problems. The band structure problem is a many-body problem corresponding to the motion of enormous number of electrons and of nuclear particles in the crystal. With the aid of Density Functional Theory (DFT), the many-electron problem can be reduced to a problem with one-electron moving in an effective crystal potential. The main idea of DFT is to describe an interacting system of fermions via its density and not via its many-body wave function. For N electrons in a solid, which obey the Pauli principle and repulse each other via the Coulomb potential, this means that the basic variable of the system depends only on three (the spatial coordinates x, y, and z) rather than 3N degrees of freedom.
      1  11