Topological Insulation And Bi2Se3 a Three-Dimensional Topological Insulator

  IJMTT-book-cover
 
International Journal of Mathematics Trends and Technology (IJMTT)
 
© 2021 by IJMTT Journal
Volume-67 Issue-4
Year of Publication : 2021
Authors : Abdul Qauom Shadab
  10.14445/22315373/IJMTT-V67I4P503

MLA

MLA Style: Abdul Qauom Shadab  "Topological Insulation And Bi2Se3 a Three-Dimensional Topological Insulator" International Journal of Mathematics Trends and Technology 67.4 (2021):10-19. 

APA Style: Abdul Qauom Shadab(2021). Topological Insulation And Bi2Se3 a Three-Dimensional Topological Insulator International Journal of Mathematics Trends and Technology, 10-19.

Abstract
Topological insulators are materials that in bulk mode have band gap such as an ordinary insulator but can protect the conduction mode at the edge or surface, i.e. apart from a simple and insulated metal. These materials are insulator in their bulk modes but are metal at the surface. Topological insulators are developed in two and three dimensions. Recently, compounds of the Bi2Se3 have attracted a huge attention because of existence of a Dirac cone in their surface state, having a suitable bandgap (0.3 eV), and easy santhesis. In this research, we investigate the properties of this material using density functional theory. The main focus is on bulk calculations and surface properties. The band structure of this material is studied in bulk mode without any consideration of spin - orbit interaction. Then a surface of this material is considered and its band structure and density of states are studied. The results show that the surface of this material has a Dirac cone

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Keywords : Density Function Theory; B2Se3;Topological Insulator, Band Structure, Dirac Cone, Metal