Charge analysis by projecting the density of states on orbitals of atoms

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Discussion Overview

The discussion revolves around the projection of the density of states (DOS) onto atomic orbitals for the purpose of charge analysis. Participants explore the relationship between DOS and atomic orbitals, particularly in the context of solid-state physics.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about methods or equations for projecting the density of states onto atomic orbitals for charge analysis.
  • Another participant suggests that this might relate to Mulliken population analysis, expressing uncertainty about the straightforwardness of the process.
  • A third participant clarifies that projecting the DOS onto orbitals refers to the Local Density of States (LDOS) and recommends consulting solid-state physics literature for more information.
  • A later reply questions how to derive orbitals from the Local Density of States.

Areas of Agreement / Disagreement

Participants express varying levels of familiarity with the topic, and while some concepts are clarified, there is no consensus on the methods for achieving the projection of DOS onto atomic orbitals.

Contextual Notes

Participants reference specific terms like Local Density of States and Mulliken population analysis, indicating that the discussion may depend on particular definitions and contexts within solid-state physics.

nhsnisha
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Dear all,

I really need help.
My question: How do i project the density of states onto orbitals of atoms? this is to do a charge analysis.

Can anyone provide me with an eqn or refer me to any relevant text or paper.

Greatly apprieciate your help.

Thanks
nisha
 
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Something like a Mulliken population analysis?

I'm not sure if that can be done in any straightforward way. Ideally, the orbitals and their occupancies contain essentially all measurable information about the system. The DOS has a lot less information than that.
 
projecting the density of states onto orbitals of atoms means the LOCAL DENSITY OF STATES.
Find any Solid State Book Index, and find the term "Local Density of States"
or LDOS.
 
Dear all,

many thanks for your reply, will check out the book.

Greatly apprieciate!
 
PRB147 said:
projecting the density of states onto orbitals of atoms means the LOCAL DENSITY OF STATES.

And how do you get the orbitals from this?
 

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