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Magnetic refrigeration: phase transitions, itinerant magnetism and spin fluctuations

โœ Scribed by Morrison, K.; Lyubina, J.; Moore, J.D.; Sandeman, K.G.; Gutfleisch, O.; Cohen, L.F.; Caplin, A.D.


Book ID
118020970
Publisher
Taylor and Francis Group
Year
2012
Tongue
English
Weight
717 KB
Volume
92
Category
Article
ISSN
1478-6435

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Spin-charge fluctuations in itinerant he
โœ Wolfram Brenig ๐Ÿ“‚ Article ๐Ÿ“… 2010 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 696 KB

Using a generalized random phase approach quantum fluctuations beyond the helical mean-field states of the Hubbard model off half filling are discussed. The collective mode spectrum is shown to exhibit spin-charge mixing and is found to be strongly renormalized by coupling to low-energy incoherent p