Spin frustration
Aims: Getting an idea that unexopected phenomena can happen in frustrated systems and how nature lifts frustration.
Material:
Frustration-induced nanometre-scale inhomogeneity in a triangular antiferromagnet (Zorko et al)
Guiding questions:
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Which is the experimental evidence that a-NaMnO2 is magnetically frustrated? (You may have to consider at least one of the references mentioned in the introduction part of the paper.)
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What is the proposed minimal magnetic model?
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What is solid state NMR and what can we learn? Why the author call label their data "23Na"?
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Why NMR provides information on electronic magnetism?
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What do we learn from the quantity 1/T1?
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What is μSR spectroscopy and why does it provide information on the local magnetic field (-> local magnetic order)?
Helpful textbooks and introcutory papers:
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Khomskii's book. (for magnetism)
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solid state NMR intro: Diss Rudisch, p. 14-23 (link) (or a textbook on magnetic methdos)
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mSR intro (link): https://arxiv.org/abs/cond-mat/0207699
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mSR intro: Dissertation Sharmadini, p. 27 - 31 (link)
