Antiferromagnet more subblatices

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Discussion Overview

The discussion centers on the concept of antiferromagnetic lattices, specifically the reasons behind the existence of multiple sublattices beyond the conventional two. Participants explore theoretical frameworks and seek clarification on the implications of having four or more sublattices in various materials.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant notes that the ordinary definition of antiferromagnets includes two sublattices, but questions why some literature discusses configurations with four or more sublattices.
  • Another participant requests specific examples to clarify the inquiry regarding multiple sublattices.
  • A participant expresses confusion about the use of four sublattices in the context of body-centered cubic lattices, questioning the necessity of more than two sublattices.
  • Speculation is offered regarding potential explanations, including spin waves, non-collinear antiferromagnetism, and the presence of multiple magnetic sublattices in non-elemental materials, though this remains general without specific examples.
  • One participant emphasizes that a single example would suffice to further the discussion.

Areas of Agreement / Disagreement

Participants do not reach a consensus, as there are multiple competing views regarding the necessity and implications of having more than two sublattices in antiferromagnetic systems.

Contextual Notes

The discussion lacks specific examples or detailed references to support claims about multiple sublattices, and assumptions regarding the definitions and contexts of antiferromagnetism remain unresolved.

matematikuvol
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In ordinary definition antiferromagnet lattice has to sublattices, one with spins up, and one with of spin down in ##T=0##. Why in some cases people discuss situations with four or even more subblatices? Do you have explanation for this? Some references maybe?
 
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Do you have specific examples in mind?
 
I'm speaking in general. I just see that in some papers some authors uses for example four sublattices for body centered cubic lattice. Why not two? I don't understand this.
 
I could speculate about spin waves, or non-collinear antiferromagnetism, or with a non-elemental material there may be multiple magnetic sublattices, or some other situation but without something specific I can't say more than that.
 
One example will be enough...
 

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