Theory of Two-Magnon Raman Scattering in Iron Pnictides and Chalcogenides
Journal Article
·
· Submitted to Physical Review Letters
Although the parent iron-based pnictides and chalcogenides are itinerant antiferromagnets, the use of local moment picture to understand their magnetic properties is still widespread. We study magnetic Raman scattering from a local moment perspective for various quantum spin models proposed for this new class of superconductors. These models vary greatly in the level of magnetic frustration and show a vastly different two-magnon Raman response. Light scattering by two-magnon excitations thus provides a robust and independent measure of the underlying spin interactions. In accord with other recent experiments, our results indicate that the amount of magnetic frustration in these systems may be small.
- Research Organization:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC02-76SF00515
- OSTI ID:
- 1022549
- Report Number(s):
- SLAC-PUB-14432; TRN: US201118%%247
- Journal Information:
- Submitted to Physical Review Letters, Vol. 106, Issue 6; ISSN 0031--9007
- Country of Publication:
- United States
- Language:
- English
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