High symmetry points for a GaAs superlattice

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SUMMARY

The discussion centers on plotting the band structure for a Gallium Arsenide (GaAs) superlattice with a non-periodic z-direction and periodic x and y directions. The user, Raouf, seeks assistance in identifying new high symmetry points and understanding the new Brillouin zone specific to this configuration. The challenge lies in the deviation from bulk GaAs band structure calculations, necessitating a different approach to symmetry points. Raouf expresses frustration over the lack of resources and guidance available for this specific topic.

PREREQUISITES
  • Understanding of band structure calculations in solid-state physics
  • Familiarity with Brillouin zones and high symmetry points
  • Knowledge of superlattice structures and their properties
  • Experience with computational tools for band structure analysis, such as Quantum ESPRESSO or VASP
NEXT STEPS
  • Research the identification of high symmetry points in non-periodic superlattices
  • Learn how to construct and analyze new Brillouin zones for complex crystal structures
  • Explore computational methods for band structure plotting using Quantum ESPRESSO
  • Study literature on GaAs superlattices to find relevant case studies and methodologies
USEFUL FOR

Researchers, physicists, and materials scientists working on semiconductor physics, particularly those focused on GaAs superlattices and band structure analysis.

mbarkira
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Hi
I have a problem that i couldn't solve by myself with my little background. I want to plot the bandstructure for a GaAs superlattice, the z-axis is the 111 direction. The structure is non periodic in the z direction and periodic in the x and y direction. The process is totally different then the bulk situation since that should be a new brillouin zone and a new high symmetry points. I couldn't find the new symmetry points and i couldn't find any good book about this, it is really a big mess for me. so any help will be appreciated.

Thanks
Raouf


NB: I am really new in the field.
 
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